add jdbc

jdbc-driver/README.md

@@ -0,0 +1,338 @@
+# SeaweedFS JDBC Driver
+
+A JDBC driver for connecting to SeaweedFS SQL engine, enabling standard Java applications and BI tools to query SeaweedFS MQ topics using SQL.
+
+## Features
+
+- **Standard JDBC Interface**: Compatible with any Java application or tool that supports JDBC
+- **SQL Query Support**: Execute SELECT queries on SeaweedFS MQ topics
+- **Aggregation Functions**: Support for COUNT, SUM, AVG, MIN, MAX operations
+- **System Columns**: Access to `_timestamp_ns`, `_key`, `_source` system columns
+- **Database Tools**: Works with DBeaver, IntelliJ DataGrip, and other database tools
+- **BI Tools**: Compatible with Tableau, Power BI, and other business intelligence tools
+- **Read-Only Access**: Secure read-only access to your SeaweedFS data
+
+## Quick Start
+
+### 1. Start SeaweedFS JDBC Server
+
+First, start the SeaweedFS JDBC server:
+
+```bash
+# Start JDBC server on default port 8089
+weed jdbc
+
+# Or with custom configuration
+weed jdbc -port=8090 -host=0.0.0.0 -master=master-server:9333
+```
+
+### 2. Add JDBC Driver to Your Project
+
+#### Maven
+
+```xml
+<dependency>
+    <groupId>com.seaweedfs</groupId>
+    <artifactId>seaweedfs-jdbc</artifactId>
+    <version>1.0.0</version>
+</dependency>
+```
+
+#### Gradle
+
+```gradle
+implementation 'com.seaweedfs:seaweedfs-jdbc:1.0.0'
+```
+
+### 3. Connect and Query
+
+```java
+import java.sql.*;
+
+public class SeaweedFSExample {
+    public static void main(String[] args) throws SQLException {
+        // JDBC URL format: jdbc:seaweedfs://host:port/database
+        String url = "jdbc:seaweedfs://localhost:8089/default";
+        
+        // Connect to SeaweedFS
+        Connection conn = DriverManager.getConnection(url);
+        
+        // Execute queries
+        Statement stmt = conn.createStatement();
+        ResultSet rs = stmt.executeQuery("SELECT * FROM my_topic LIMIT 10");
+        
+        // Process results
+        while (rs.next()) {
+            System.out.println("ID: " + rs.getLong("id"));
+            System.out.println("Message: " + rs.getString("message"));
+            System.out.println("Timestamp: " + rs.getTimestamp("_timestamp_ns"));
+        }
+        
+        // Clean up
+        rs.close();
+        stmt.close();
+        conn.close();
+    }
+}
+```
+
+## JDBC URL Format
+
+```
+jdbc:seaweedfs://host:port/database[?property=value&...]
+```
+
+### Parameters
+
+| Parameter | Default | Description |
+|-----------|---------|-------------|
+| `host` | localhost | SeaweedFS JDBC server hostname |
+| `port` | 8089 | SeaweedFS JDBC server port |
+| `database` | default | Database/namespace name |
+| `connectTimeout` | 30000 | Connection timeout in milliseconds |
+| `socketTimeout` | 0 | Socket timeout in milliseconds (0 = infinite) |
+
+### Examples
+
+```java
+// Basic connection
+"jdbc:seaweedfs://localhost:8089/default"
+
+// Custom host and port
+"jdbc:seaweedfs://seaweed-server:9000/production"
+
+// With query parameters
+"jdbc:seaweedfs://localhost:8089/default?connectTimeout=5000&socketTimeout=30000"
+```
+
+## Supported SQL Operations
+
+### SELECT Queries
+```sql
+-- Basic select
+SELECT * FROM topic_name;
+
+-- With WHERE clause
+SELECT id, message FROM topic_name WHERE id > 1000;
+
+-- With LIMIT
+SELECT * FROM topic_name ORDER BY _timestamp_ns DESC LIMIT 100;
+```
+
+### Aggregation Functions
+```sql
+-- Count records
+SELECT COUNT(*) FROM topic_name;
+
+-- Aggregations
+SELECT 
+    COUNT(*) as total_messages,
+    MIN(id) as min_id,
+    MAX(id) as max_id,
+    AVG(amount) as avg_amount
+FROM topic_name;
+```
+
+### System Columns
+```sql
+-- Access system columns
+SELECT 
+    id, 
+    message,
+    _timestamp_ns as timestamp,
+    _key as partition_key,
+    _source as data_source
+FROM topic_name;
+```
+
+### Schema Information
+```sql
+-- List databases
+SHOW DATABASES;
+
+-- List tables in current database
+SHOW TABLES;
+
+-- Describe table structure
+DESCRIBE topic_name;
+-- or
+DESC topic_name;
+```
+
+## Database Tool Integration
+
+### DBeaver
+
+1. Download and install DBeaver
+2. Create new connection → Generic JDBC
+3. Settings:
+   - **URL**: `jdbc:seaweedfs://localhost:8089/default`
+   - **Driver Class**: `com.seaweedfs.jdbc.SeaweedFSDriver`
+   - **Libraries**: Add `seaweedfs-jdbc-1.0.0.jar`
+
+### IntelliJ DataGrip
+
+1. Open DataGrip
+2. Add New Data Source → Generic
+3. Configure:
+   - **URL**: `jdbc:seaweedfs://localhost:8089/default`
+   - **Driver**: Add `seaweedfs-jdbc-1.0.0.jar`
+   - **Driver Class**: `com.seaweedfs.jdbc.SeaweedFSDriver`
+
+### Tableau
+
+1. Connect to Data → More... → Generic JDBC
+2. Configure:
+   - **URL**: `jdbc:seaweedfs://localhost:8089/default`
+   - **Driver Path**: Path to `seaweedfs-jdbc-1.0.0.jar`
+   - **Class Name**: `com.seaweedfs.jdbc.SeaweedFSDriver`
+
+## Advanced Usage
+
+### Connection Pooling
+
+```java
+import com.zaxxer.hikari.HikariConfig;
+import com.zaxxer.hikari.HikariDataSource;
+
+HikariConfig config = new HikariConfig();
+config.setJdbcUrl("jdbc:seaweedfs://localhost:8089/default");
+config.setMaximumPoolSize(10);
+
+HikariDataSource dataSource = new HikariDataSource(config);
+Connection conn = dataSource.getConnection();
+```
+
+### PreparedStatements
+
+```java
+String sql = "SELECT * FROM topic_name WHERE id > ? AND created_date > ?";
+PreparedStatement stmt = conn.prepareStatement(sql);
+stmt.setLong(1, 1000);
+stmt.setTimestamp(2, Timestamp.valueOf("2024-01-01 00:00:00"));
+
+ResultSet rs = stmt.executeQuery();
+while (rs.next()) {
+    // Process results
+}
+```
+
+### Metadata Access
+
+```java
+DatabaseMetaData metadata = conn.getMetaData();
+
+// Get database information
+System.out.println("Database: " + metadata.getDatabaseProductName());
+System.out.println("Version: " + metadata.getDatabaseProductVersion());
+System.out.println("Driver: " + metadata.getDriverName());
+
+// Get table information
+ResultSet tables = metadata.getTables(null, null, null, null);
+while (tables.next()) {
+    System.out.println("Table: " + tables.getString("TABLE_NAME"));
+}
+```
+
+## Building from Source
+
+```bash
+# Clone the repository
+git clone https://github.com/seaweedfs/seaweedfs.git
+cd seaweedfs/jdbc-driver
+
+# Build with Maven
+mvn clean package
+
+# Run tests
+mvn test
+
+# Install to local repository
+mvn install
+```
+
+## Configuration
+
+### Server-Side Configuration
+
+The JDBC server supports the following command-line options:
+
+```bash
+weed jdbc -help
+  -host string
+        JDBC server host (default "localhost")
+  -master string
+        SeaweedFS master server address (default "localhost:9333")
+  -port int
+        JDBC server port (default 8089)
+```
+
+### Client-Side Configuration
+
+Connection properties can be set via URL parameters or Properties object:
+
+```java
+Properties props = new Properties();
+props.setProperty("connectTimeout", "10000");
+props.setProperty("socketTimeout", "30000");
+
+Connection conn = DriverManager.getConnection(
+    "jdbc:seaweedfs://localhost:8089/default", props);
+```
+
+## Performance Tips
+
+1. **Use LIMIT clauses**: Always limit result sets for large topics
+2. **Filter early**: Use WHERE clauses to reduce data transfer
+3. **Connection pooling**: Use connection pools for multi-threaded applications
+4. **Batch operations**: Use batch statements for multiple queries
+5. **Close resources**: Always close ResultSets, Statements, and Connections
+
+## Limitations
+
+- **Read-Only**: SeaweedFS JDBC driver only supports SELECT operations
+- **No Transactions**: Transaction support is not available
+- **Single Table**: Joins between tables are not supported
+- **Limited SQL**: Only basic SQL SELECT syntax is supported
+
+## Troubleshooting
+
+### Connection Issues
+
+```bash
+# Test JDBC server connectivity
+telnet localhost 8089
+
+# Check SeaweedFS master connectivity
+weed shell
+> cluster.status
+```
+
+### Common Errors
+
+**Error: "Connection refused"**
+- Ensure JDBC server is running on the specified host/port
+- Check firewall settings
+
+**Error: "No suitable driver found"**
+- Verify JDBC driver is in classpath
+- Ensure correct driver class name: `com.seaweedfs.jdbc.SeaweedFSDriver`
+
+**Error: "Topic not found"**
+- Verify topic exists in SeaweedFS
+- Check database/namespace name in connection URL
+
+## Contributing
+
+Contributions are welcome! Please see the main SeaweedFS repository for contribution guidelines.
+
+## License
+
+This JDBC driver is part of SeaweedFS and is licensed under the Apache License 2.0.
+
+## Support
+
+- **Documentation**: [SeaweedFS Wiki](https://github.com/seaweedfs/seaweedfs/wiki)
+- **Issues**: [GitHub Issues](https://github.com/seaweedfs/seaweedfs/issues)
+- **Discussions**: [GitHub Discussions](https://github.com/seaweedfs/seaweedfs/discussions)
+- **Chat**: [SeaweedFS Slack](https://join.slack.com/t/seaweedfs/shared_invite/...)

jdbc-driver/examples/SeaweedFSJDBCExample.java

@@ -0,0 +1,308 @@
+package com.seaweedfs.jdbc.examples;
+
+import java.sql.*;
+import java.util.Properties;
+
+/**
+ * Complete example demonstrating SeaweedFS JDBC driver usage
+ */
+public class SeaweedFSJDBCExample {
+    
+    public static void main(String[] args) {
+        // JDBC URL for SeaweedFS
+        String url = "jdbc:seaweedfs://localhost:8089/default";
+        
+        try {
+            // 1. Load the driver (optional - auto-registration via META-INF/services)
+            Class.forName("com.seaweedfs.jdbc.SeaweedFSDriver");
+            System.out.println("✓ SeaweedFS JDBC Driver loaded successfully");
+            
+            // 2. Connect to SeaweedFS
+            System.out.println("\n📡 Connecting to SeaweedFS...");
+            Connection conn = DriverManager.getConnection(url);
+            System.out.println("✓ Connected to: " + url);
+            
+            // 3. Get database metadata
+            DatabaseMetaData dbMeta = conn.getMetaData();
+            System.out.println("\n📊 Database Information:");
+            System.out.println("  Database: " + dbMeta.getDatabaseProductName());
+            System.out.println("  Version: " + dbMeta.getDatabaseProductVersion());
+            System.out.println("  Driver: " + dbMeta.getDriverName() + " v" + dbMeta.getDriverVersion());
+            System.out.println("  JDBC Version: " + dbMeta.getJDBCMajorVersion() + "." + dbMeta.getJDBCMinorVersion());
+            System.out.println("  Read-only: " + dbMeta.isReadOnly());
+            
+            // 4. List available databases/schemas
+            System.out.println("\n🗄️  Available Databases:");
+            ResultSet catalogs = dbMeta.getCatalogs();
+            while (catalogs.next()) {
+                System.out.println("  • " + catalogs.getString("TABLE_CAT"));
+            }
+            catalogs.close();
+            
+            // 5. Execute basic queries
+            System.out.println("\n🔍 Executing SQL Queries:");
+            
+            Statement stmt = conn.createStatement();
+            
+            // Show databases
+            System.out.println("\n  📋 SHOW DATABASES:");
+            ResultSet rs = stmt.executeQuery("SHOW DATABASES");
+            while (rs.next()) {
+                System.out.println("    " + rs.getString(1));
+            }
+            rs.close();
+            
+            // Show tables (topics)
+            System.out.println("\n  📋 SHOW TABLES:");
+            rs = stmt.executeQuery("SHOW TABLES");
+            ResultSetMetaData rsmd = rs.getMetaData();
+            int columnCount = rsmd.getColumnCount();
+            
+            // Print headers
+            for (int i = 1; i <= columnCount; i++) {
+                System.out.print(String.format("%-20s", rsmd.getColumnName(i)));
+            }
+            System.out.println();
+            System.out.println("-".repeat(20 * columnCount));
+            
+            // Print rows
+            while (rs.next()) {
+                for (int i = 1; i <= columnCount; i++) {
+                    System.out.print(String.format("%-20s", rs.getString(i)));
+                }
+                System.out.println();
+            }
+            rs.close();
+            
+            // 6. Query a specific topic (if exists)
+            String topicQuery = "SELECT * FROM test_topic LIMIT 5";
+            System.out.println("\n  📋 " + topicQuery + ":");
+            
+            try {
+                rs = stmt.executeQuery(topicQuery);
+                rsmd = rs.getMetaData();
+                columnCount = rsmd.getColumnCount();
+                
+                // Print column headers
+                for (int i = 1; i <= columnCount; i++) {
+                    System.out.print(String.format("%-15s", rsmd.getColumnName(i)));
+                }
+                System.out.println();
+                System.out.println("-".repeat(15 * columnCount));
+                
+                // Print data rows
+                int rowCount = 0;
+                while (rs.next() && rowCount < 5) {
+                    for (int i = 1; i <= columnCount; i++) {
+                        String value = rs.getString(i);
+                        if (value != null && value.length() > 12) {
+                            value = value.substring(0, 12) + "...";
+                        }
+                        System.out.print(String.format("%-15s", value != null ? value : "NULL"));
+                    }
+                    System.out.println();
+                    rowCount++;
+                }
+                
+                if (rowCount == 0) {
+                    System.out.println("    (No data found)");
+                }
+                
+                rs.close();
+            } catch (SQLException e) {
+                System.out.println("    ⚠️  Topic 'test_topic' not found: " + e.getMessage());
+            }
+            
+            // 7. Demonstrate aggregation queries
+            System.out.println("\n  🧮 Aggregation Example:");
+            try {
+                rs = stmt.executeQuery("SELECT COUNT(*) as total_records FROM test_topic");
+                if (rs.next()) {
+                    System.out.println("    Total records: " + rs.getLong("total_records"));
+                }
+                rs.close();
+            } catch (SQLException e) {
+                System.out.println("    ⚠️  Aggregation example skipped: " + e.getMessage());
+            }
+            
+            // 8. Demonstrate PreparedStatement
+            System.out.println("\n  📝 PreparedStatement Example:");
+            String preparedQuery = "SELECT * FROM test_topic WHERE id > ? LIMIT ?";
+            
+            try {
+                PreparedStatement pstmt = conn.prepareStatement(preparedQuery);
+                pstmt.setLong(1, 100);
+                pstmt.setInt(2, 3);
+                
+                System.out.println("    Query: " + preparedQuery);
+                System.out.println("    Parameters: id > 100, LIMIT 3");
+                
+                rs = pstmt.executeQuery();
+                rsmd = rs.getMetaData();
+                columnCount = rsmd.getColumnCount();
+                
+                int count = 0;
+                while (rs.next()) {
+                    if (count == 0) {
+                        // Print headers for first row
+                        for (int i = 1; i <= columnCount; i++) {
+                            System.out.print(String.format("%-15s", rsmd.getColumnName(i)));
+                        }
+                        System.out.println();
+                        System.out.println("-".repeat(15 * columnCount));
+                    }
+                    
+                    for (int i = 1; i <= columnCount; i++) {
+                        String value = rs.getString(i);
+                        if (value != null && value.length() > 12) {
+                            value = value.substring(0, 12) + "...";
+                        }
+                        System.out.print(String.format("%-15s", value != null ? value : "NULL"));
+                    }
+                    System.out.println();
+                    count++;
+                }
+                
+                if (count == 0) {
+                    System.out.println("    (No records match criteria)");
+                }
+                
+                rs.close();
+                pstmt.close();
+            } catch (SQLException e) {
+                System.out.println("    ⚠️  PreparedStatement example skipped: " + e.getMessage());
+            }
+            
+            // 9. System columns example
+            System.out.println("\n  🔧 System Columns Example:");
+            try {
+                rs = stmt.executeQuery("SELECT id, _timestamp_ns, _key, _source FROM test_topic LIMIT 3");
+                rsmd = rs.getMetaData();
+                columnCount = rsmd.getColumnCount();
+                
+                // Print headers
+                for (int i = 1; i <= columnCount; i++) {
+                    System.out.print(String.format("%-20s", rsmd.getColumnName(i)));
+                }
+                System.out.println();
+                System.out.println("-".repeat(20 * columnCount));
+                
+                int count = 0;
+                while (rs.next()) {
+                    for (int i = 1; i <= columnCount; i++) {
+                        String value = rs.getString(i);
+                        if (value != null && value.length() > 17) {
+                            value = value.substring(0, 17) + "...";
+                        }
+                        System.out.print(String.format("%-20s", value != null ? value : "NULL"));
+                    }
+                    System.out.println();
+                    count++;
+                }
+                
+                if (count == 0) {
+                    System.out.println("    (No data available for system columns demo)");
+                }
+                
+                rs.close();
+            } catch (SQLException e) {
+                System.out.println("    ⚠️  System columns example skipped: " + e.getMessage());
+            }
+            
+            // 10. Connection properties example
+            System.out.println("\n⚙️  Connection Properties:");
+            System.out.println("  Auto-commit: " + conn.getAutoCommit());
+            System.out.println("  Read-only: " + conn.isReadOnly());
+            System.out.println("  Transaction isolation: " + conn.getTransactionIsolation());
+            System.out.println("  Catalog: " + conn.getCatalog());
+            
+            // 11. Clean up
+            stmt.close();
+            conn.close();
+            
+            System.out.println("\n✅ SeaweedFS JDBC Example completed successfully!");
+            System.out.println("\n💡 Next Steps:");
+            System.out.println("  • Try connecting with DBeaver or other JDBC tools");
+            System.out.println("  • Use in your Java applications with connection pooling");
+            System.out.println("  • Integrate with BI tools like Tableau or Power BI");
+            System.out.println("  • Build data pipelines using SeaweedFS as a data source");
+            
+        } catch (ClassNotFoundException e) {
+            System.err.println("❌ SeaweedFS JDBC Driver not found: " + e.getMessage());
+            System.err.println("   Make sure seaweedfs-jdbc.jar is in your classpath");
+        } catch (SQLException e) {
+            System.err.println("❌ Database error: " + e.getMessage());
+            System.err.println("   Make sure SeaweedFS JDBC server is running:");
+            System.err.println("   weed jdbc -port=8089 -master=localhost:9333");
+        } catch (Exception e) {
+            System.err.println("❌ Unexpected error: " + e.getMessage());
+            e.printStackTrace();
+        }
+    }
+    
+    /**
+     * Example with connection pooling using HikariCP
+     */
+    public static void connectionPoolingExample() {
+        try {
+            // This would require HikariCP dependency
+            /*
+            HikariConfig config = new HikariConfig();
+            config.setJdbcUrl("jdbc:seaweedfs://localhost:8089/default");
+            config.setMaximumPoolSize(10);
+            config.setMinimumIdle(2);
+            config.setConnectionTimeout(30000);
+            config.setIdleTimeout(600000);
+            
+            HikariDataSource dataSource = new HikariDataSource(config);
+            
+            try (Connection conn = dataSource.getConnection()) {
+                // Use connection from pool
+                Statement stmt = conn.createStatement();
+                ResultSet rs = stmt.executeQuery("SELECT COUNT(*) FROM my_topic");
+                if (rs.next()) {
+                    System.out.println("Record count: " + rs.getLong(1));
+                }
+                rs.close();
+                stmt.close();
+            }
+            
+            dataSource.close();
+            */
+            
+            System.out.println("Connection pooling example (commented out - requires HikariCP dependency)");
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+    
+    /**
+     * Example configuration for different database tools
+     */
+    public static void printToolConfiguration() {
+        System.out.println("\n🛠️  Database Tool Configuration:");
+        
+        System.out.println("\n📊 DBeaver:");
+        System.out.println("  1. New Connection → Generic JDBC");
+        System.out.println("  2. URL: jdbc:seaweedfs://localhost:8089/default");
+        System.out.println("  3. Driver Class: com.seaweedfs.jdbc.SeaweedFSDriver");
+        System.out.println("  4. Add seaweedfs-jdbc.jar to Libraries");
+        
+        System.out.println("\n💻 IntelliJ DataGrip:");
+        System.out.println("  1. New Data Source → Generic");
+        System.out.println("  2. URL: jdbc:seaweedfs://localhost:8089/default");
+        System.out.println("  3. Add Driver: seaweedfs-jdbc.jar");
+        System.out.println("  4. Class: com.seaweedfs.jdbc.SeaweedFSDriver");
+        
+        System.out.println("\n📈 Tableau:");
+        System.out.println("  1. Connect to Data → More... → Generic JDBC");
+        System.out.println("  2. URL: jdbc:seaweedfs://localhost:8089/default");
+        System.out.println("  3. Driver Path: /path/to/seaweedfs-jdbc.jar");
+        System.out.println("  4. Class Name: com.seaweedfs.jdbc.SeaweedFSDriver");
+        
+        System.out.println("\n☕ Java Application:");
+        System.out.println("  Class.forName(\"com.seaweedfs.jdbc.SeaweedFSDriver\");");
+        System.out.println("  Connection conn = DriverManager.getConnection(");
+        System.out.println("      \"jdbc:seaweedfs://localhost:8089/default\");");
+    }
+}

jdbc-driver/pom.xml

@@ -0,0 +1,154 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
+         http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.seaweedfs</groupId>
+    <artifactId>seaweedfs-jdbc</artifactId>
+    <version>1.0.0</version>
+    <packaging>jar</packaging>
+
+    <name>SeaweedFS JDBC Driver</name>
+    <description>JDBC driver for connecting to SeaweedFS SQL engine</description>
+    <url>https://github.com/seaweedfs/seaweedfs</url>
+
+    <licenses>
+        <license>
+            <name>Apache License, Version 2.0</name>
+            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <junit.version>5.9.0</junit.version>
+    </properties>
+
+    <dependencies>
+        <!-- JUnit for testing -->
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-engine</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.junit.jupiter</groupId>
+            <artifactId>junit-jupiter-api</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+
+        <!-- SLF4J for logging -->
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-api</artifactId>
+            <version>1.7.36</version>
+        </dependency>
+        <dependency>
+            <groupId>org.slf4j</groupId>
+            <artifactId>slf4j-simple</artifactId>
+            <version>1.7.36</version>
+            <scope>test</scope>
+        </dependency>
+    </dependencies>
+
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.10.1</version>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                    <encoding>UTF-8</encoding>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-surefire-plugin</artifactId>
+                <version>3.0.0-M7</version>
+                <configuration>
+                    <useSystemClassLoader>false</useSystemClassLoader>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <version>3.2.2</version>
+                <configuration>
+                    <archive>
+                        <manifestEntries>
+                            <Automatic-Module-Name>com.seaweedfs.jdbc</Automatic-Module-Name>
+                        </manifestEntries>
+                    </archive>
+                </configuration>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-source-plugin</artifactId>
+                <version>3.2.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-sources</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+            </plugin>
+
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>3.4.1</version>
+                <executions>
+                    <execution>
+                        <id>attach-javadocs</id>
+                        <goals>
+                            <goal>jar</goal>
+                        </goals>
+                    </execution>
+                </executions>
+                <configuration>
+                    <source>8</source>
+                    <target>8</target>
+                    <doclint>none</doclint>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+
+    <profiles>
+        <profile>
+            <id>release</id>
+            <build>
+                <plugins>
+                    <plugin>
+                        <groupId>org.apache.maven.plugins</groupId>
+                        <artifactId>maven-gpg-plugin</artifactId>
+                        <version>3.0.1</version>
+                        <executions>
+                            <execution>
+                                <id>sign-artifacts</id>
+                                <phase>verify</phase>
+                                <goals>
+                                    <goal>sign</goal>
+                                </goals>
+                            </execution>
+                        </executions>
+                    </plugin>
+                </plugins>
+            </build>
+        </profile>
+    </profiles>
+</project>

jdbc-driver/src/main/java/com/seaweedfs/jdbc/SeaweedFSConnection.java

@@ -0,0 +1,497 @@
+package com.seaweedfs.jdbc;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.io.*;
+import java.net.Socket;
+import java.net.SocketTimeoutException;
+import java.nio.ByteBuffer;
+import java.sql.*;
+import java.util.Map;
+import java.util.Properties;
+import java.util.concurrent.Executor;
+
+/**
+ * JDBC Connection implementation for SeaweedFS
+ */
+public class SeaweedFSConnection implements Connection {
+
+    private static final Logger logger = LoggerFactory.getLogger(SeaweedFSConnection.class);
+    
+    // Protocol constants (must match server implementation)
+    private static final byte JDBC_MSG_CONNECT = 0x01;
+    private static final byte JDBC_MSG_DISCONNECT = 0x02;
+    private static final byte JDBC_MSG_EXECUTE_QUERY = 0x03;
+    private static final byte JDBC_MSG_EXECUTE_UPDATE = 0x04;
+    private static final byte JDBC_MSG_GET_METADATA = 0x07;
+    private static final byte JDBC_MSG_SET_AUTOCOMMIT = 0x08;
+    private static final byte JDBC_MSG_COMMIT = 0x09;
+    private static final byte JDBC_MSG_ROLLBACK = 0x0A;
+    
+    private static final byte JDBC_RESP_OK = 0x00;
+    private static final byte JDBC_RESP_ERROR = 0x01;
+    private static final byte JDBC_RESP_RESULT_SET = 0x02;
+    private static final byte JDBC_RESP_UPDATE_COUNT = 0x03;
+    private static final byte JDBC_RESP_METADATA = 0x04;
+    
+    private final SeaweedFSConnectionInfo connectionInfo;
+    private Socket socket;
+    private DataInputStream inputStream;
+    private DataOutputStream outputStream;
+    private boolean closed = false;
+    private boolean autoCommit = true;
+    private String catalog = null;
+    private int transactionIsolation = Connection.TRANSACTION_NONE;
+    private boolean readOnly = true; // SeaweedFS is read-only
+    
+    public SeaweedFSConnection(SeaweedFSConnectionInfo connectionInfo) throws SQLException {
+        this.connectionInfo = connectionInfo;
+        connect();
+    }
+    
+    private void connect() throws SQLException {
+        try {
+            logger.debug("Connecting to SeaweedFS at {}:{}", connectionInfo.getHost(), connectionInfo.getPort());
+            
+            // Create socket connection
+            socket = new Socket();
+            socket.connect(new java.net.InetSocketAddress(connectionInfo.getHost(), connectionInfo.getPort()), 
+                          connectionInfo.getConnectTimeout());
+            
+            if (connectionInfo.getSocketTimeout() > 0) {
+                socket.setSoTimeout(connectionInfo.getSocketTimeout());
+            }
+            
+            // Create streams
+            inputStream = new DataInputStream(new BufferedInputStream(socket.getInputStream()));
+            outputStream = new DataOutputStream(new BufferedOutputStream(socket.getOutputStream()));
+            
+            // Send connection message
+            sendMessage(JDBC_MSG_CONNECT, connectionInfo.getDatabase().getBytes());
+            
+            // Read response
+            Response response = readResponse();
+            if (response.type == JDBC_RESP_ERROR) {
+                throw new SQLException("Failed to connect: " + new String(response.data));
+            }
+            
+            logger.info("Successfully connected to SeaweedFS: {}", connectionInfo.getConnectionString());
+            
+        } catch (Exception e) {
+            if (socket != null && !socket.isClosed()) {
+                try {
+                    socket.close();
+                } catch (IOException ignored) {}
+            }
+            throw new SQLException("Failed to connect to SeaweedFS: " + e.getMessage(), e);
+        }
+    }
+
+    @Override
+    public Statement createStatement() throws SQLException {
+        checkClosed();
+        return new SeaweedFSStatement(this);
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql) throws SQLException {
+        checkClosed();
+        return new SeaweedFSPreparedStatement(this, sql);
+    }
+
+    @Override
+    public CallableStatement prepareCall(String sql) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Callable statements are not supported");
+    }
+
+    @Override
+    public String nativeSQL(String sql) throws SQLException {
+        checkClosed();
+        return sql; // No translation needed
+    }
+
+    @Override
+    public void setAutoCommit(boolean autoCommit) throws SQLException {
+        checkClosed();
+        if (this.autoCommit != autoCommit) {
+            sendMessage(JDBC_MSG_SET_AUTOCOMMIT, new byte[]{(byte)(autoCommit ? 1 : 0)});
+            Response response = readResponse();
+            if (response.type == JDBC_RESP_ERROR) {
+                throw new SQLException("Failed to set auto-commit: " + new String(response.data));
+            }
+            this.autoCommit = autoCommit;
+        }
+    }
+
+    @Override
+    public boolean getAutoCommit() throws SQLException {
+        checkClosed();
+        return autoCommit;
+    }
+
+    @Override
+    public void commit() throws SQLException {
+        checkClosed();
+        if (autoCommit) {
+            throw new SQLException("Cannot commit when auto-commit is enabled");
+        }
+        sendMessage(JDBC_MSG_COMMIT, new byte[0]);
+        Response response = readResponse();
+        if (response.type == JDBC_RESP_ERROR) {
+            throw new SQLException("Failed to commit: " + new String(response.data));
+        }
+    }
+
+    @Override
+    public void rollback() throws SQLException {
+        checkClosed();
+        if (autoCommit) {
+            throw new SQLException("Cannot rollback when auto-commit is enabled");
+        }
+        sendMessage(JDBC_MSG_ROLLBACK, new byte[0]);
+        Response response = readResponse();
+        if (response.type == JDBC_RESP_ERROR) {
+            throw new SQLException("Failed to rollback: " + new String(response.data));
+        }
+    }
+
+    @Override
+    public void close() throws SQLException {
+        if (!closed) {
+            try {
+                if (outputStream != null) {
+                    sendMessage(JDBC_MSG_DISCONNECT, new byte[0]);
+                    outputStream.close();
+                }
+                if (inputStream != null) {
+                    inputStream.close();
+                }
+                if (socket != null && !socket.isClosed()) {
+                    socket.close();
+                }
+            } catch (Exception e) {
+                logger.warn("Error closing connection: {}", e.getMessage());
+            } finally {
+                closed = true;
+                logger.debug("Connection closed");
+            }
+        }
+    }
+
+    @Override
+    public boolean isClosed() throws SQLException {
+        return closed || (socket != null && socket.isClosed());
+    }
+
+    @Override
+    public DatabaseMetaData getMetaData() throws SQLException {
+        checkClosed();
+        return new SeaweedFSDatabaseMetaData(this);
+    }
+
+    @Override
+    public void setReadOnly(boolean readOnly) throws SQLException {
+        checkClosed();
+        // SeaweedFS is always read-only, so we ignore attempts to change this
+        this.readOnly = true;
+    }
+
+    @Override
+    public boolean isReadOnly() throws SQLException {
+        checkClosed();
+        return readOnly;
+    }
+
+    @Override
+    public void setCatalog(String catalog) throws SQLException {
+        checkClosed();
+        this.catalog = catalog;
+    }
+
+    @Override
+    public String getCatalog() throws SQLException {
+        checkClosed();
+        return catalog != null ? catalog : connectionInfo.getDatabase();
+    }
+
+    @Override
+    public void setTransactionIsolation(int level) throws SQLException {
+        checkClosed();
+        this.transactionIsolation = level;
+    }
+
+    @Override
+    public int getTransactionIsolation() throws SQLException {
+        checkClosed();
+        return transactionIsolation;
+    }
+
+    @Override
+    public SQLWarning getWarnings() throws SQLException {
+        checkClosed();
+        return null; // No warnings for now
+    }
+
+    @Override
+    public void clearWarnings() throws SQLException {
+        checkClosed();
+        // No-op
+    }
+
+    // Methods not commonly used - basic implementations
+    
+    @Override
+    public Statement createStatement(int resultSetType, int resultSetConcurrency) throws SQLException {
+        return createStatement();
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
+        return prepareStatement(sql);
+    }
+
+    @Override
+    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Callable statements are not supported");
+    }
+
+    @Override
+    public Map<String, Class<?>> getTypeMap() throws SQLException {
+        throw new SQLFeatureNotSupportedException("Type maps are not supported");
+    }
+
+    @Override
+    public void setTypeMap(Map<String, Class<?>> map) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Type maps are not supported");
+    }
+
+    @Override
+    public void setHoldability(int holdability) throws SQLException {
+        // No-op
+    }
+
+    @Override
+    public int getHoldability() throws SQLException {
+        return ResultSet.CLOSE_CURSORS_AT_COMMIT;
+    }
+
+    @Override
+    public Savepoint setSavepoint() throws SQLException {
+        throw new SQLFeatureNotSupportedException("Savepoints are not supported");
+    }
+
+    @Override
+    public Savepoint setSavepoint(String name) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Savepoints are not supported");
+    }
+
+    @Override
+    public void rollback(Savepoint savepoint) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Savepoints are not supported");
+    }
+
+    @Override
+    public void releaseSavepoint(Savepoint savepoint) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Savepoints are not supported");
+    }
+
+    @Override
+    public Statement createStatement(int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
+        return createStatement();
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
+        return prepareStatement(sql);
+    }
+
+    @Override
+    public CallableStatement prepareCall(String sql, int resultSetType, int resultSetConcurrency, int resultSetHoldability) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Callable statements are not supported");
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, int autoGeneratedKeys) throws SQLException {
+        return prepareStatement(sql);
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, int[] columnIndexes) throws SQLException {
+        return prepareStatement(sql);
+    }
+
+    @Override
+    public PreparedStatement prepareStatement(String sql, String[] columnNames) throws SQLException {
+        return prepareStatement(sql);
+    }
+
+    @Override
+    public Clob createClob() throws SQLException {
+        throw new SQLFeatureNotSupportedException("Clob creation is not supported");
+    }
+
+    @Override
+    public Blob createBlob() throws SQLException {
+        throw new SQLFeatureNotSupportedException("Blob creation is not supported");
+    }
+
+    @Override
+    public NClob createNClob() throws SQLException {
+        throw new SQLFeatureNotSupportedException("NClob creation is not supported");
+    }
+
+    @Override
+    public SQLXML createSQLXML() throws SQLException {
+        throw new SQLFeatureNotSupportedException("SQLXML creation is not supported");
+    }
+
+    @Override
+    public boolean isValid(int timeout) throws SQLException {
+        return !closed && socket != null && !socket.isClosed();
+    }
+
+    @Override
+    public void setClientInfo(String name, String value) throws SQLClientInfoException {
+        // No-op
+    }
+
+    @Override
+    public void setClientInfo(Properties properties) throws SQLClientInfoException {
+        // No-op
+    }
+
+    @Override
+    public String getClientInfo(String name) throws SQLException {
+        return null;
+    }
+
+    @Override
+    public Properties getClientInfo() throws SQLException {
+        return new Properties();
+    }
+
+    @Override
+    public Array createArrayOf(String typeName, Object[] elements) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Array creation is not supported");
+    }
+
+    @Override
+    public Struct createStruct(String typeName, Object[] attributes) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Struct creation is not supported");
+    }
+
+    @Override
+    public void setSchema(String schema) throws SQLException {
+        // No-op
+    }
+
+    @Override
+    public String getSchema() throws SQLException {
+        return connectionInfo.getDatabase();
+    }
+
+    @Override
+    public void abort(Executor executor) throws SQLException {
+        close();
+    }
+
+    @Override
+    public void setNetworkTimeout(Executor executor, int milliseconds) throws SQLException {
+        try {
+            if (socket != null) {
+                socket.setSoTimeout(milliseconds);
+            }
+        } catch (Exception e) {
+            throw new SQLException("Failed to set network timeout", e);
+        }
+    }
+
+    @Override
+    public int getNetworkTimeout() throws SQLException {
+        try {
+            return socket != null ? socket.getSoTimeout() : 0;
+        } catch (Exception e) {
+            throw new SQLException("Failed to get network timeout", e);
+        }
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        if (iface.isAssignableFrom(getClass())) {
+            return iface.cast(this);
+        }
+        throw new SQLException("Cannot unwrap to " + iface.getName());
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return iface.isAssignableFrom(getClass());
+    }
+    
+    // Package-private methods for use by Statement and other classes
+    
+    void sendMessage(byte messageType, byte[] data) throws SQLException {
+        try {
+            synchronized (outputStream) {
+                // Write header: message type (1 byte) + data length (4 bytes)
+                outputStream.writeByte(messageType);
+                outputStream.writeInt(data.length);
+                
+                // Write data
+                if (data.length > 0) {
+                    outputStream.write(data);
+                }
+                
+                outputStream.flush();
+            }
+        } catch (IOException e) {
+            throw new SQLException("Failed to send message to server", e);
+        }
+    }
+    
+    Response readResponse() throws SQLException {
+        try {
+            synchronized (inputStream) {
+                // Read response type
+                byte responseType = inputStream.readByte();
+                
+                // Read data length
+                int dataLength = inputStream.readInt();
+                
+                // Read data
+                byte[] data = new byte[dataLength];
+                if (dataLength > 0) {
+                    inputStream.readFully(data);
+                }
+                
+                return new Response(responseType, data);
+            }
+        } catch (SocketTimeoutException e) {
+            throw new SQLException("Read timeout from server", e);
+        } catch (IOException e) {
+            throw new SQLException("Failed to read response from server", e);
+        }
+    }
+    
+    private void checkClosed() throws SQLException {
+        if (closed) {
+            throw new SQLException("Connection is closed");
+        }
+    }
+    
+    SeaweedFSConnectionInfo getConnectionInfo() {
+        return connectionInfo;
+    }
+    
+    // Helper class for responses
+    static class Response {
+        final byte type;
+        final byte[] data;
+        
+        Response(byte type, byte[] data) {
+            this.type = type;
+            this.data = data;
+        }
+    }
+}

jdbc-driver/src/main/java/com/seaweedfs/jdbc/SeaweedFSConnectionInfo.java

@@ -0,0 +1,71 @@
+package com.seaweedfs.jdbc;
+
+import java.util.Properties;
+
+/**
+ * Connection information holder for SeaweedFS JDBC connections
+ */
+public class SeaweedFSConnectionInfo {
+    
+    private final String host;
+    private final int port;
+    private final String database;
+    private final String user;
+    private final String password;
+    private final int connectTimeout;
+    private final int socketTimeout;
+    private final Properties properties;
+    
+    public SeaweedFSConnectionInfo(Properties props) {
+        this.properties = new Properties(props);
+        this.host = props.getProperty(SeaweedFSDriver.PROP_HOST, "localhost");
+        this.port = Integer.parseInt(props.getProperty(SeaweedFSDriver.PROP_PORT, "8089"));
+        this.database = props.getProperty(SeaweedFSDriver.PROP_DATABASE, "default");
+        this.user = props.getProperty(SeaweedFSDriver.PROP_USER, "");
+        this.password = props.getProperty(SeaweedFSDriver.PROP_PASSWORD, "");
+        this.connectTimeout = Integer.parseInt(props.getProperty(SeaweedFSDriver.PROP_CONNECT_TIMEOUT, "30000"));
+        this.socketTimeout = Integer.parseInt(props.getProperty(SeaweedFSDriver.PROP_SOCKET_TIMEOUT, "0"));
+    }
+    
+    public String getHost() {
+        return host;
+    }
+    
+    public int getPort() {
+        return port;
+    }
+    
+    public String getDatabase() {
+        return database;
+    }
+    
+    public String getUser() {
+        return user;
+    }
+    
+    public String getPassword() {
+        return password;
+    }
+    
+    public int getConnectTimeout() {
+        return connectTimeout;
+    }
+    
+    public int getSocketTimeout() {
+        return socketTimeout;
+    }
+    
+    public Properties getProperties() {
+        return new Properties(properties);
+    }
+    
+    public String getConnectionString() {
+        return String.format("jdbc:seaweedfs://%s:%d/%s", host, port, database);
+    }
+    
+    @Override
+    public String toString() {
+        return String.format("SeaweedFSConnectionInfo{host='%s', port=%d, database='%s', user='%s', connectTimeout=%d, socketTimeout=%d}",
+                host, port, database, user, connectTimeout, socketTimeout);
+    }
+}

jdbc-driver/src/main/java/com/seaweedfs/jdbc/SeaweedFSDatabaseMetaData.java

@@ -0,0 +1,972 @@
+package com.seaweedfs.jdbc;
+
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * DatabaseMetaData implementation for SeaweedFS JDBC
+ */
+public class SeaweedFSDatabaseMetaData implements DatabaseMetaData {
+    
+    private final SeaweedFSConnection connection;
+    
+    public SeaweedFSDatabaseMetaData(SeaweedFSConnection connection) {
+        this.connection = connection;
+    }
+
+    @Override
+    public boolean allProceduresAreCallable() throws SQLException {
+        return false; // No stored procedures
+    }
+
+    @Override
+    public boolean allTablesAreSelectable() throws SQLException {
+        return true; // All tables are selectable
+    }
+
+    @Override
+    public String getURL() throws SQLException {
+        return connection.getConnectionInfo().getConnectionString();
+    }
+
+    @Override
+    public String getUserName() throws SQLException {
+        return connection.getConnectionInfo().getUser();
+    }
+
+    @Override
+    public boolean isReadOnly() throws SQLException {
+        return true; // SeaweedFS is read-only
+    }
+
+    @Override
+    public boolean nullsAreSortedHigh() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean nullsAreSortedLow() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean nullsAreSortedAtStart() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean nullsAreSortedAtEnd() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public String getDatabaseProductName() throws SQLException {
+        return "SeaweedFS";
+    }
+
+    @Override
+    public String getDatabaseProductVersion() throws SQLException {
+        return "1.0.0"; // This could be retrieved from the server
+    }
+
+    @Override
+    public String getDriverName() throws SQLException {
+        return SeaweedFSDriver.DRIVER_NAME;
+    }
+
+    @Override
+    public String getDriverVersion() throws SQLException {
+        return SeaweedFSDriver.DRIVER_VERSION;
+    }
+
+    @Override
+    public int getDriverMajorVersion() {
+        return SeaweedFSDriver.DRIVER_MAJOR_VERSION;
+    }
+
+    @Override
+    public int getDriverMinorVersion() {
+        return SeaweedFSDriver.DRIVER_MINOR_VERSION;
+    }
+
+    @Override
+    public boolean usesLocalFiles() throws SQLException {
+        return false; // SeaweedFS uses distributed storage
+    }
+
+    @Override
+    public boolean usesLocalFilePerTable() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMixedCaseIdentifiers() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean storesUpperCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesLowerCaseIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesMixedCaseIdentifiers() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsMixedCaseQuotedIdentifiers() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean storesUpperCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesLowerCaseQuotedIdentifiers() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean storesMixedCaseQuotedIdentifiers() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public String getIdentifierQuoteString() throws SQLException {
+        return "`";
+    }
+
+    @Override
+    public String getSQLKeywords() throws SQLException {
+        return ""; // No additional keywords beyond SQL standard
+    }
+
+    @Override
+    public String getNumericFunctions() throws SQLException {
+        return "COUNT,SUM,AVG,MIN,MAX";
+    }
+
+    @Override
+    public String getStringFunctions() throws SQLException {
+        return "";
+    }
+
+    @Override
+    public String getSystemFunctions() throws SQLException {
+        return "";
+    }
+
+    @Override
+    public String getTimeDateFunctions() throws SQLException {
+        return "";
+    }
+
+    @Override
+    public String getSearchStringEscape() throws SQLException {
+        return "\\";
+    }
+
+    @Override
+    public String getExtraNameCharacters() throws SQLException {
+        return "";
+    }
+
+    @Override
+    public boolean supportsAlterTableWithAddColumn() throws SQLException {
+        return false; // No DDL support
+    }
+
+    @Override
+    public boolean supportsAlterTableWithDropColumn() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsColumnAliasing() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean nullPlusNonNullIsNull() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsConvert() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsConvert(int fromType, int toType) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsTableCorrelationNames() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsDifferentTableCorrelationNames() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsExpressionsInOrderBy() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsOrderByUnrelated() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsGroupBy() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsGroupByUnrelated() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsGroupByBeyondSelect() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsLikeEscapeClause() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsMultipleResultSets() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMultipleTransactions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsNonNullableColumns() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsMinimumSQLGrammar() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public boolean supportsCoreSQLGrammar() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsExtendedSQLGrammar() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsANSI92EntryLevelSQL() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsANSI92IntermediateSQL() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsANSI92FullSQL() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsIntegrityEnhancementFacility() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOuterJoins() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsFullOuterJoins() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsLimitedOuterJoins() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public String getSchemaTerm() throws SQLException {
+        return "schema";
+    }
+
+    @Override
+    public String getProcedureTerm() throws SQLException {
+        return "procedure";
+    }
+
+    @Override
+    public String getCatalogTerm() throws SQLException {
+        return "catalog";
+    }
+
+    @Override
+    public boolean isCatalogAtStart() throws SQLException {
+        return true;
+    }
+
+    @Override
+    public String getCatalogSeparator() throws SQLException {
+        return ".";
+    }
+
+    @Override
+    public boolean supportsSchemasInDataManipulation() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSchemasInProcedureCalls() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSchemasInTableDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSchemasInIndexDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSchemasInPrivilegeDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInDataManipulation() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInProcedureCalls() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInTableDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInIndexDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCatalogsInPrivilegeDefinitions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsPositionedDelete() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsPositionedUpdate() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSelectForUpdate() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsStoredProcedures() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSubqueriesInComparisons() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSubqueriesInExists() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSubqueriesInIns() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsSubqueriesInQuantifieds() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsCorrelatedSubqueries() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsUnion() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsUnionAll() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOpenCursorsAcrossCommit() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOpenCursorsAcrossRollback() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOpenStatementsAcrossCommit() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsOpenStatementsAcrossRollback() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public int getMaxBinaryLiteralLength() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxCharLiteralLength() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxColumnNameLength() throws SQLException {
+        return 255;
+    }
+
+    @Override
+    public int getMaxColumnsInGroupBy() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxColumnsInIndex() throws SQLException {
+        return 0; // No indexes
+    }
+
+    @Override
+    public int getMaxColumnsInOrderBy() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxColumnsInSelect() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxColumnsInTable() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxConnections() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxCursorNameLength() throws SQLException {
+        return 0; // No cursors
+    }
+
+    @Override
+    public int getMaxIndexLength() throws SQLException {
+        return 0; // No indexes
+    }
+
+    @Override
+    public int getMaxSchemaNameLength() throws SQLException {
+        return 255;
+    }
+
+    @Override
+    public int getMaxProcedureNameLength() throws SQLException {
+        return 0; // No procedures
+    }
+
+    @Override
+    public int getMaxCatalogNameLength() throws SQLException {
+        return 255;
+    }
+
+    @Override
+    public int getMaxRowSize() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public boolean doesMaxRowSizeIncludeBlobs() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public int getMaxStatementLength() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxStatements() throws SQLException {
+        return 0; // No limit
+    }
+
+    @Override
+    public int getMaxTableNameLength() throws SQLException {
+        return 255;
+    }
+
+    @Override
+    public int getMaxTablesInSelect() throws SQLException {
+        return 1; // Only single table selects supported
+    }
+
+    @Override
+    public int getMaxUserNameLength() throws SQLException {
+        return 255;
+    }
+
+    @Override
+    public int getDefaultTransactionIsolation() throws SQLException {
+        return Connection.TRANSACTION_NONE;
+    }
+
+    @Override
+    public boolean supportsTransactions() throws SQLException {
+        return false; // No transactions
+    }
+
+    @Override
+    public boolean supportsTransactionIsolationLevel(int level) throws SQLException {
+        return level == Connection.TRANSACTION_NONE;
+    }
+
+    @Override
+    public boolean supportsDataDefinitionAndDataManipulationTransactions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsDataManipulationTransactionsOnly() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean dataDefinitionCausesTransactionCommit() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean dataDefinitionIgnoredInTransactions() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getProcedures(String catalog, String schemaPattern, String procedureNamePattern) throws SQLException {
+        // Return empty result set - no procedures
+        return createEmptyResultSet(new String[]{"PROCEDURE_CAT", "PROCEDURE_SCHEM", "PROCEDURE_NAME", "reserved1", "reserved2", "reserved3", "REMARKS", "PROCEDURE_TYPE", "SPECIFIC_NAME"});
+    }
+
+    @Override
+    public ResultSet getProcedureColumns(String catalog, String schemaPattern, String procedureNamePattern, String columnNamePattern) throws SQLException {
+        // Return empty result set - no procedures
+        return createEmptyResultSet(new String[]{"PROCEDURE_CAT", "PROCEDURE_SCHEM", "PROCEDURE_NAME", "COLUMN_NAME", "COLUMN_TYPE", "DATA_TYPE", "TYPE_NAME", "PRECISION", "LENGTH", "SCALE", "RADIX", "NULLABLE", "REMARKS", "COLUMN_DEF", "SQL_DATA_TYPE", "SQL_DATETIME_SUB", "CHAR_OCTET_LENGTH", "ORDINAL_POSITION", "IS_NULLABLE", "SPECIFIC_NAME"});
+    }
+
+    @Override
+    public ResultSet getTables(String catalog, String schemaPattern, String tableNamePattern, String[] types) throws SQLException {
+        // For now, return empty result set
+        // In a full implementation, this would query the schema catalog
+        return createEmptyResultSet(new String[]{"TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "TABLE_TYPE", "REMARKS", "TYPE_CAT", "TYPE_SCHEM", "TYPE_NAME", "SELF_REFERENCING_COL_NAME", "REF_GENERATION"});
+    }
+
+    @Override
+    public ResultSet getSchemas() throws SQLException {
+        return getSchemas(null, null);
+    }
+
+    @Override
+    public ResultSet getCatalogs() throws SQLException {
+        // Return default catalog
+        List<List<String>> rows = new ArrayList<>();
+        rows.add(List.of("default"));
+        return createResultSet(new String[]{"TABLE_CAT"}, rows);
+    }
+
+    @Override
+    public ResultSet getTableTypes() throws SQLException {
+        List<List<String>> rows = new ArrayList<>();
+        rows.add(List.of("TABLE"));
+        return createResultSet(new String[]{"TABLE_TYPE"}, rows);
+    }
+
+    @Override
+    public ResultSet getColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
+        // Return empty result set for now
+        return createEmptyResultSet(new String[]{"TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "COLUMN_NAME", "DATA_TYPE", "TYPE_NAME", "COLUMN_SIZE", "BUFFER_LENGTH", "DECIMAL_DIGITS", "NUM_PREC_RADIX", "NULLABLE", "REMARKS", "COLUMN_DEF", "SQL_DATA_TYPE", "SQL_DATETIME_SUB", "CHAR_OCTET_LENGTH", "ORDINAL_POSITION", "IS_NULLABLE", "SCOPE_CATALOG", "SCOPE_SCHEMA", "SCOPE_TABLE", "SOURCE_DATA_TYPE", "IS_AUTOINCREMENT", "IS_GENERATEDCOLUMN"});
+    }
+
+    @Override
+    public ResultSet getColumnPrivileges(String catalog, String schema, String table, String columnNamePattern) throws SQLException {
+        return createEmptyResultSet(new String[]{"TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "COLUMN_NAME", "GRANTOR", "GRANTEE", "PRIVILEGE", "IS_GRANTABLE"});
+    }
+
+    @Override
+    public ResultSet getTablePrivileges(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
+        return createEmptyResultSet(new String[]{"TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "GRANTOR", "GRANTEE", "PRIVILEGE", "IS_GRANTABLE"});
+    }
+
+    @Override
+    public ResultSet getBestRowIdentifier(String catalog, String schema, String table, int scope, boolean nullable) throws SQLException {
+        return createEmptyResultSet(new String[]{"SCOPE", "COLUMN_NAME", "DATA_TYPE", "TYPE_NAME", "COLUMN_SIZE", "BUFFER_LENGTH", "DECIMAL_DIGITS", "PSEUDO_COLUMN"});
+    }
+
+    @Override
+    public ResultSet getVersionColumns(String catalog, String schema, String table) throws SQLException {
+        return createEmptyResultSet(new String[]{"SCOPE", "COLUMN_NAME", "DATA_TYPE", "TYPE_NAME", "COLUMN_SIZE", "BUFFER_LENGTH", "DECIMAL_DIGITS", "PSEUDO_COLUMN"});
+    }
+
+    @Override
+    public ResultSet getPrimaryKeys(String catalog, String schema, String table) throws SQLException {
+        return createEmptyResultSet(new String[]{"TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "COLUMN_NAME", "KEY_SEQ", "PK_NAME"});
+    }
+
+    @Override
+    public ResultSet getImportedKeys(String catalog, String schema, String table) throws SQLException {
+        return createEmptyResultSet(new String[]{"PKTABLE_CAT", "PKTABLE_SCHEM", "PKTABLE_NAME", "PKCOLUMN_NAME", "FKTABLE_CAT", "FKTABLE_SCHEM", "FKTABLE_NAME", "FKCOLUMN_NAME", "KEY_SEQ", "UPDATE_RULE", "DELETE_RULE", "FK_NAME", "PK_NAME", "DEFERRABILITY"});
+    }
+
+    @Override
+    public ResultSet getExportedKeys(String catalog, String schema, String table) throws SQLException {
+        return createEmptyResultSet(new String[]{"PKTABLE_CAT", "PKTABLE_SCHEM", "PKTABLE_NAME", "PKCOLUMN_NAME", "FKTABLE_CAT", "FKTABLE_SCHEM", "FKTABLE_NAME", "FKCOLUMN_NAME", "KEY_SEQ", "UPDATE_RULE", "DELETE_RULE", "FK_NAME", "PK_NAME", "DEFERRABILITY"});
+    }
+
+    @Override
+    public ResultSet getCrossReference(String parentCatalog, String parentSchema, String parentTable, String foreignCatalog, String foreignSchema, String foreignTable) throws SQLException {
+        return createEmptyResultSet(new String[]{"PKTABLE_CAT", "PKTABLE_SCHEM", "PKTABLE_NAME", "PKCOLUMN_NAME", "FKTABLE_CAT", "FKTABLE_SCHEM", "FKTABLE_NAME", "FKCOLUMN_NAME", "KEY_SEQ", "UPDATE_RULE", "DELETE_RULE", "FK_NAME", "PK_NAME", "DEFERRABILITY"});
+    }
+
+    @Override
+    public ResultSet getTypeInfo() throws SQLException {
+        List<List<String>> rows = new ArrayList<>();
+        // Add basic SQL types
+        rows.add(List.of("VARCHAR", String.valueOf(Types.VARCHAR), "65535", "'", "'", "length", "1", "3", "1", "0", "0", "0", "VARCHAR", "0", "0", String.valueOf(Types.VARCHAR), "0", "10"));
+        rows.add(List.of("BIGINT", String.valueOf(Types.BIGINT), "19", null, null, null, "1", "2", "0", "0", "0", "1", "BIGINT", "0", "0", String.valueOf(Types.BIGINT), "0", "10"));
+        rows.add(List.of("BOOLEAN", String.valueOf(Types.BOOLEAN), "1", null, null, null, "1", "2", "0", "0", "0", "1", "BOOLEAN", "0", "0", String.valueOf(Types.BOOLEAN), "0", "10"));
+        rows.add(List.of("TIMESTAMP", String.valueOf(Types.TIMESTAMP), "23", "'", "'", null, "1", "3", "0", "0", "0", "0", "TIMESTAMP", "0", "6", String.valueOf(Types.TIMESTAMP), "0", "10"));
+        
+        return createResultSet(new String[]{"TYPE_NAME", "DATA_TYPE", "PRECISION", "LITERAL_PREFIX", "LITERAL_SUFFIX", "CREATE_PARAMS", "NULLABLE", "CASE_SENSITIVE", "SEARCHABLE", "UNSIGNED_ATTRIBUTE", "FIXED_PREC_SCALE", "AUTO_INCREMENT", "LOCAL_TYPE_NAME", "MINIMUM_SCALE", "MAXIMUM_SCALE", "SQL_DATA_TYPE", "SQL_DATETIME_SUB", "NUM_PREC_RADIX"}, rows);
+    }
+
+    @Override
+    public ResultSet getIndexInfo(String catalog, String schema, String table, boolean unique, boolean approximate) throws SQLException {
+        return createEmptyResultSet(new String[]{"TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "NON_UNIQUE", "INDEX_QUALIFIER", "INDEX_NAME", "TYPE", "ORDINAL_POSITION", "COLUMN_NAME", "ASC_OR_DESC", "CARDINALITY", "PAGES", "FILTER_CONDITION"});
+    }
+
+    @Override
+    public boolean supportsResultSetType(int type) throws SQLException {
+        return type == ResultSet.TYPE_FORWARD_ONLY;
+    }
+
+    @Override
+    public boolean supportsResultSetConcurrency(int type, int concurrency) throws SQLException {
+        return type == ResultSet.TYPE_FORWARD_ONLY && concurrency == ResultSet.CONCUR_READ_ONLY;
+    }
+
+    @Override
+    public boolean ownUpdatesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean ownDeletesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean ownInsertsAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean othersUpdatesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean othersDeletesAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean othersInsertsAreVisible(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean updatesAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean deletesAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean insertsAreDetected(int type) throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsBatchUpdates() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getUDTs(String catalog, String schemaPattern, String typeNamePattern, int[] types) throws SQLException {
+        return createEmptyResultSet(new String[]{"TYPE_CAT", "TYPE_SCHEM", "TYPE_NAME", "CLASS_NAME", "DATA_TYPE", "REMARKS", "BASE_TYPE"});
+    }
+
+    @Override
+    public Connection getConnection() throws SQLException {
+        return connection;
+    }
+
+    // JDBC 3.0 methods
+    @Override
+    public boolean supportsSavepoints() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsNamedParameters() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsMultipleOpenResults() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsGetGeneratedKeys() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getSuperTypes(String catalog, String schemaPattern, String typeNamePattern) throws SQLException {
+        return createEmptyResultSet(new String[]{"TYPE_CAT", "TYPE_SCHEM", "TYPE_NAME", "SUPERTYPE_CAT", "SUPERTYPE_SCHEM", "SUPERTYPE_NAME"});
+    }
+
+    @Override
+    public ResultSet getSuperTables(String catalog, String schemaPattern, String tableNamePattern) throws SQLException {
+        return createEmptyResultSet(new String[]{"TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "SUPERTABLE_NAME"});
+    }
+
+    @Override
+    public ResultSet getAttributes(String catalog, String schemaPattern, String typeNamePattern, String attributeNamePattern) throws SQLException {
+        return createEmptyResultSet(new String[]{"TYPE_CAT", "TYPE_SCHEM", "TYPE_NAME", "ATTR_NAME", "DATA_TYPE", "ATTR_TYPE_NAME", "ATTR_SIZE", "DECIMAL_DIGITS", "NUM_PREC_RADIX", "NULLABLE", "REMARKS", "ATTR_DEF", "SQL_DATA_TYPE", "SQL_DATETIME_SUB", "CHAR_OCTET_LENGTH", "ORDINAL_POSITION", "IS_NULLABLE", "SCOPE_CATALOG", "SCOPE_SCHEMA", "SCOPE_TABLE", "SOURCE_DATA_TYPE"});
+    }
+
+    @Override
+    public boolean supportsResultSetHoldability(int holdability) throws SQLException {
+        return holdability == ResultSet.CLOSE_CURSORS_AT_COMMIT;
+    }
+
+    @Override
+    public int getResultSetHoldability() throws SQLException {
+        return ResultSet.CLOSE_CURSORS_AT_COMMIT;
+    }
+
+    @Override
+    public int getDatabaseMajorVersion() throws SQLException {
+        return 1;
+    }
+
+    @Override
+    public int getDatabaseMinorVersion() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getJDBCMajorVersion() throws SQLException {
+        return 4;
+    }
+
+    @Override
+    public int getJDBCMinorVersion() throws SQLException {
+        return 0;
+    }
+
+    @Override
+    public int getSQLStateType() throws SQLException {
+        return DatabaseMetaData.sqlStateSQL;
+    }
+
+    @Override
+    public boolean locatorsUpdateCopy() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean supportsStatementPooling() throws SQLException {
+        return false;
+    }
+
+    // JDBC 4.0 methods
+    @Override
+    public RowIdLifetime getRowIdLifetime() throws SQLException {
+        return RowIdLifetime.ROWID_UNSUPPORTED;
+    }
+
+    @Override
+    public ResultSet getSchemas(String catalog, String schemaPattern) throws SQLException {
+        List<List<String>> rows = new ArrayList<>();
+        rows.add(List.of(connection.getConnectionInfo().getDatabase(), "default"));
+        return createResultSet(new String[]{"TABLE_SCHEM", "TABLE_CATALOG"}, rows);
+    }
+
+    @Override
+    public boolean supportsStoredFunctionsUsingCallSyntax() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public boolean autoCommitFailureClosesAllResultSets() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public ResultSet getClientInfoProperties() throws SQLException {
+        return createEmptyResultSet(new String[]{"NAME", "MAX_LEN", "DEFAULT_VALUE", "DESCRIPTION"});
+    }
+
+    @Override
+    public ResultSet getFunctions(String catalog, String schemaPattern, String functionNamePattern) throws SQLException {
+        return createEmptyResultSet(new String[]{"FUNCTION_CAT", "FUNCTION_SCHEM", "FUNCTION_NAME", "REMARKS", "FUNCTION_TYPE", "SPECIFIC_NAME"});
+    }
+
+    @Override
+    public ResultSet getFunctionColumns(String catalog, String schemaPattern, String functionNamePattern, String columnNamePattern) throws SQLException {
+        return createEmptyResultSet(new String[]{"FUNCTION_CAT", "FUNCTION_SCHEM", "FUNCTION_NAME", "COLUMN_NAME", "COLUMN_TYPE", "DATA_TYPE", "TYPE_NAME", "PRECISION", "LENGTH", "SCALE", "RADIX", "NULLABLE", "REMARKS", "CHAR_OCTET_LENGTH", "ORDINAL_POSITION", "IS_NULLABLE", "SPECIFIC_NAME"});
+    }
+
+    // JDBC 4.1 methods
+    @Override
+    public ResultSet getPseudoColumns(String catalog, String schemaPattern, String tableNamePattern, String columnNamePattern) throws SQLException {
+        return createEmptyResultSet(new String[]{"TABLE_CAT", "TABLE_SCHEM", "TABLE_NAME", "COLUMN_NAME", "DATA_TYPE", "COLUMN_SIZE", "DECIMAL_DIGITS", "NUM_PREC_RADIX", "COLUMN_USAGE", "REMARKS", "CHAR_OCTET_LENGTH", "IS_NULLABLE"});
+    }
+
+    @Override
+    public boolean generatedKeyAlwaysReturned() throws SQLException {
+        return false;
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        if (iface.isAssignableFrom(getClass())) {
+            return iface.cast(this);
+        }
+        throw new SQLException("Cannot unwrap to " + iface.getName());
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return iface.isAssignableFrom(getClass());
+    }
+    
+    // Helper methods to create result sets
+    private ResultSet createEmptyResultSet(String[] columnNames) throws SQLException {
+        return createResultSet(columnNames, new ArrayList<>());
+    }
+    
+    private ResultSet createResultSet(String[] columnNames, List<List<String>> rows) throws SQLException {
+        // Convert to the format expected by SeaweedFSResultSet
+        byte[] data = serializeResultSetData(columnNames, rows);
+        return new SeaweedFSResultSet(null, data);
+    }
+    
+    private byte[] serializeResultSetData(String[] columnNames, List<List<String>> rows) {
+        java.io.ByteArrayOutputStream baos = new java.io.ByteArrayOutputStream();
+        java.io.DataOutputStream dos = new java.io.DataOutputStream(baos);
+        
+        try {
+            // Column count
+            dos.writeInt(columnNames.length);
+            
+            // Column names
+            for (String name : columnNames) {
+                byte[] nameBytes = name.getBytes();
+                dos.writeInt(nameBytes.length);
+                dos.write(nameBytes);
+            }
+            
+            // Row count
+            dos.writeInt(rows.size());
+            
+            // Rows
+            for (List<String> row : rows) {
+                for (String value : row) {
+                    if (value != null) {
+                        byte[] valueBytes = value.getBytes();
+                        dos.writeInt(valueBytes.length);
+                        dos.write(valueBytes);
+                    } else {
+                        dos.writeInt(0); // null value
+                    }
+                }
+            }
+            
+            dos.flush();
+            return baos.toByteArray();
+            
+        } catch (Exception e) {
+            throw new RuntimeException("Failed to serialize result set data", e);
+        }
+    }
+}

jdbc-driver/src/main/java/com/seaweedfs/jdbc/SeaweedFSDriver.java

@@ -0,0 +1,207 @@
+package com.seaweedfs.jdbc;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.*;
+import java.util.Properties;
+
+/**
+ * SeaweedFS JDBC Driver
+ * 
+ * Provides JDBC connectivity to SeaweedFS SQL engine for querying MQ topics.
+ * 
+ * JDBC URL format: jdbc:seaweedfs://host:port/database
+ * 
+ * Example usage:
+ * <pre>
+ * Class.forName("com.seaweedfs.jdbc.SeaweedFSDriver");
+ * Connection conn = DriverManager.getConnection("jdbc:seaweedfs://localhost:8089/default");
+ * Statement stmt = conn.createStatement();
+ * ResultSet rs = stmt.executeQuery("SELECT * FROM my_topic LIMIT 10");
+ * </pre>
+ */
+public class SeaweedFSDriver implements Driver {
+
+    private static final Logger logger = LoggerFactory.getLogger(SeaweedFSDriver.class);
+    
+    // Driver information
+    public static final String DRIVER_NAME = "SeaweedFS JDBC Driver";
+    public static final String DRIVER_VERSION = "1.0.0";
+    public static final int DRIVER_MAJOR_VERSION = 1;
+    public static final int DRIVER_MINOR_VERSION = 0;
+    
+    // URL prefix for SeaweedFS JDBC connections
+    public static final String URL_PREFIX = "jdbc:seaweedfs://";
+    
+    // Default connection properties
+    public static final String PROP_HOST = "host";
+    public static final String PROP_PORT = "port";
+    public static final String PROP_DATABASE = "database";
+    public static final String PROP_USER = "user";
+    public static final String PROP_PASSWORD = "password";
+    public static final String PROP_CONNECT_TIMEOUT = "connectTimeout";
+    public static final String PROP_SOCKET_TIMEOUT = "socketTimeout";
+    
+    static {
+        try {
+            // Register the driver with the DriverManager
+            DriverManager.registerDriver(new SeaweedFSDriver());
+            logger.info("SeaweedFS JDBC Driver {} registered successfully", DRIVER_VERSION);
+        } catch (SQLException e) {
+            logger.error("Failed to register SeaweedFS JDBC Driver", e);
+            throw new RuntimeException("Failed to register SeaweedFS JDBC Driver", e);
+        }
+    }
+
+    @Override
+    public Connection connect(String url, Properties info) throws SQLException {
+        if (!acceptsURL(url)) {
+            return null; // Not our URL, let another driver handle it
+        }
+        
+        logger.debug("Attempting to connect to: {}", url);
+        
+        try {
+            // Parse the URL to extract connection parameters
+            SeaweedFSConnectionInfo connectionInfo = parseURL(url, info);
+            
+            // Create and return the connection
+            return new SeaweedFSConnection(connectionInfo);
+            
+        } catch (Exception e) {
+            logger.error("Failed to connect to SeaweedFS: {}", e.getMessage(), e);
+            throw new SQLException("Failed to connect to SeaweedFS: " + e.getMessage(), e);
+        }
+    }
+
+    @Override
+    public boolean acceptsURL(String url) throws SQLException {
+        return url != null && url.startsWith(URL_PREFIX);
+    }
+
+    @Override
+    public DriverPropertyInfo[] getPropertyInfo(String url, Properties info) throws SQLException {
+        return new DriverPropertyInfo[] {
+            createPropertyInfo(PROP_HOST, "localhost", "SeaweedFS JDBC server hostname", null, false),
+            createPropertyInfo(PROP_PORT, "8089", "SeaweedFS JDBC server port", null, false),
+            createPropertyInfo(PROP_DATABASE, "default", "Database/namespace name", null, false),
+            createPropertyInfo(PROP_USER, "", "Username (optional)", null, false),
+            createPropertyInfo(PROP_PASSWORD, "", "Password (optional)", null, false),
+            createPropertyInfo(PROP_CONNECT_TIMEOUT, "30000", "Connection timeout in milliseconds", null, false),
+            createPropertyInfo(PROP_SOCKET_TIMEOUT, "0", "Socket timeout in milliseconds (0 = infinite)", null, false)
+        };
+    }
+    
+    private DriverPropertyInfo createPropertyInfo(String name, String defaultValue, String description, String[] choices, boolean required) {
+        DriverPropertyInfo info = new DriverPropertyInfo(name, defaultValue);
+        info.description = description;
+        info.choices = choices;
+        info.required = required;
+        return info;
+    }
+
+    @Override
+    public int getMajorVersion() {
+        return DRIVER_MAJOR_VERSION;
+    }
+
+    @Override
+    public int getMinorVersion() {
+        return DRIVER_MINOR_VERSION;
+    }
+
+    @Override
+    public boolean jdbcCompliant() {
+        // We implement a subset of JDBC, so we're not fully compliant
+        return false;
+    }
+
+    @Override
+    public java.util.logging.Logger getParentLogger() throws SQLFeatureNotSupportedException {
+        throw new SQLFeatureNotSupportedException("getParentLogger is not supported");
+    }
+    
+    /**
+     * Parse JDBC URL and extract connection information
+     * 
+     * Expected format: jdbc:seaweedfs://host:port/database[?property=value&...]
+     */
+    private SeaweedFSConnectionInfo parseURL(String url, Properties info) throws SQLException {
+        if (!acceptsURL(url)) {
+            throw new SQLException("Invalid SeaweedFS JDBC URL: " + url);
+        }
+        
+        try {
+            // Remove the jdbc:seaweedfs:// prefix
+            String remaining = url.substring(URL_PREFIX.length());
+            
+            // Split into host:port/database and query parameters
+            String[] parts = remaining.split("\\?", 2);
+            String hostPortDb = parts[0];
+            String queryParams = parts.length > 1 ? parts[1] : "";
+            
+            // Parse host, port, and database
+            String host = "localhost";
+            int port = 8089;
+            String database = "default";
+            
+            if (hostPortDb.contains("/")) {
+                String[] hostPortDbParts = hostPortDb.split("/", 2);
+                String hostPort = hostPortDbParts[0];
+                database = hostPortDbParts[1];
+                
+                if (hostPort.contains(":")) {
+                    String[] hostPortParts = hostPort.split(":", 2);
+                    host = hostPortParts[0];
+                    port = Integer.parseInt(hostPortParts[1]);
+                } else {
+                    host = hostPort;
+                }
+            } else if (hostPortDb.contains(":")) {
+                String[] hostPortParts = hostPortDb.split(":", 2);
+                host = hostPortParts[0];
+                port = Integer.parseInt(hostPortParts[1]);
+            } else if (!hostPortDb.isEmpty()) {
+                host = hostPortDb;
+            }
+            
+            // Create properties with defaults
+            Properties connectionProps = new Properties();
+            connectionProps.setProperty(PROP_HOST, host);
+            connectionProps.setProperty(PROP_PORT, String.valueOf(port));
+            connectionProps.setProperty(PROP_DATABASE, database);
+            connectionProps.setProperty(PROP_USER, "");
+            connectionProps.setProperty(PROP_PASSWORD, "");
+            connectionProps.setProperty(PROP_CONNECT_TIMEOUT, "30000");
+            connectionProps.setProperty(PROP_SOCKET_TIMEOUT, "0");
+            
+            // Override with provided properties
+            if (info != null) {
+                connectionProps.putAll(info);
+            }
+            
+            // Parse query parameters
+            if (!queryParams.isEmpty()) {
+                for (String param : queryParams.split("&")) {
+                    String[] keyValue = param.split("=", 2);
+                    if (keyValue.length == 2) {
+                        connectionProps.setProperty(keyValue[0], keyValue[1]);
+                    }
+                }
+            }
+            
+            return new SeaweedFSConnectionInfo(connectionProps);
+            
+        } catch (Exception e) {
+            throw new SQLException("Failed to parse SeaweedFS JDBC URL: " + url, e);
+        }
+    }
+    
+    /**
+     * Get driver information string
+     */
+    public static String getDriverInfo() {
+        return String.format("%s v%s", DRIVER_NAME, DRIVER_VERSION);
+    }
+}

jdbc-driver/src/main/java/com/seaweedfs/jdbc/SeaweedFSPreparedStatement.java

@@ -0,0 +1,352 @@
+package com.seaweedfs.jdbc;
+
+import java.io.InputStream;
+import java.io.Reader;
+import java.math.BigDecimal;
+import java.net.URL;
+import java.sql.*;
+import java.util.Calendar;
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * PreparedStatement implementation for SeaweedFS JDBC
+ */
+public class SeaweedFSPreparedStatement extends SeaweedFSStatement implements PreparedStatement {
+    
+    private final String originalSql;
+    private final Map<Integer, Object> parameters = new HashMap<>();
+    
+    public SeaweedFSPreparedStatement(SeaweedFSConnection connection, String sql) {
+        super(connection);
+        this.originalSql = sql;
+    }
+
+    @Override
+    public ResultSet executeQuery() throws SQLException {
+        return executeQuery(buildSqlWithParameters());
+    }
+
+    @Override
+    public int executeUpdate() throws SQLException {
+        return executeUpdate(buildSqlWithParameters());
+    }
+
+    @Override
+    public void setNull(int parameterIndex, int sqlType) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, null);
+    }
+
+    @Override
+    public void setBoolean(int parameterIndex, boolean x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setByte(int parameterIndex, byte x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setShort(int parameterIndex, short x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setInt(int parameterIndex, int x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setLong(int parameterIndex, long x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setFloat(int parameterIndex, float x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setDouble(int parameterIndex, double x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setBigDecimal(int parameterIndex, BigDecimal x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setString(int parameterIndex, String x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setBytes(int parameterIndex, byte[] x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setDate(int parameterIndex, Date x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setTime(int parameterIndex, Time x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setTimestamp(int parameterIndex, Timestamp x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public void setAsciiStream(int parameterIndex, InputStream x, int length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("ASCII streams are not supported");
+    }
+
+    @Override
+    public void setUnicodeStream(int parameterIndex, InputStream x, int length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Unicode streams are not supported");
+    }
+
+    @Override
+    public void setBinaryStream(int parameterIndex, InputStream x, int length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Binary streams are not supported");
+    }
+
+    @Override
+    public void clearParameters() throws SQLException {
+        checkClosed();
+        parameters.clear();
+    }
+
+    @Override
+    public void setObject(int parameterIndex, Object x, int targetSqlType) throws SQLException {
+        setObject(parameterIndex, x);
+    }
+
+    @Override
+    public void setObject(int parameterIndex, Object x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x);
+    }
+
+    @Override
+    public boolean execute() throws SQLException {
+        return execute(buildSqlWithParameters());
+    }
+
+    @Override
+    public void addBatch() throws SQLException {
+        checkClosed();
+        addBatch(buildSqlWithParameters());
+    }
+
+    @Override
+    public void setCharacterStream(int parameterIndex, Reader reader, int length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Character streams are not supported");
+    }
+
+    @Override
+    public void setRef(int parameterIndex, Ref x) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Ref objects are not supported");
+    }
+
+    @Override
+    public void setBlob(int parameterIndex, Blob x) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Blob objects are not supported");
+    }
+
+    @Override
+    public void setClob(int parameterIndex, Clob x) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Clob objects are not supported");
+    }
+
+    @Override
+    public void setArray(int parameterIndex, Array x) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Array objects are not supported");
+    }
+
+    @Override
+    public ResultSetMetaData getMetaData() throws SQLException {
+        throw new SQLFeatureNotSupportedException("Prepared statement metadata is not supported");
+    }
+
+    @Override
+    public void setDate(int parameterIndex, Date x, Calendar cal) throws SQLException {
+        setDate(parameterIndex, x);
+    }
+
+    @Override
+    public void setTime(int parameterIndex, Time x, Calendar cal) throws SQLException {
+        setTime(parameterIndex, x);
+    }
+
+    @Override
+    public void setTimestamp(int parameterIndex, Timestamp x, Calendar cal) throws SQLException {
+        setTimestamp(parameterIndex, x);
+    }
+
+    @Override
+    public void setNull(int parameterIndex, int sqlType, String typeName) throws SQLException {
+        setNull(parameterIndex, sqlType);
+    }
+
+    @Override
+    public void setURL(int parameterIndex, URL x) throws SQLException {
+        checkClosed();
+        parameters.put(parameterIndex, x.toString());
+    }
+
+    @Override
+    public ParameterMetaData getParameterMetaData() throws SQLException {
+        throw new SQLFeatureNotSupportedException("Parameter metadata is not supported");
+    }
+
+    @Override
+    public void setRowId(int parameterIndex, RowId x) throws SQLException {
+        throw new SQLFeatureNotSupportedException("RowId objects are not supported");
+    }
+
+    @Override
+    public void setNString(int parameterIndex, String value) throws SQLException {
+        setString(parameterIndex, value);
+    }
+
+    @Override
+    public void setNCharacterStream(int parameterIndex, Reader value, long length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("NCharacter streams are not supported");
+    }
+
+    @Override
+    public void setNClob(int parameterIndex, NClob value) throws SQLException {
+        throw new SQLFeatureNotSupportedException("NClob objects are not supported");
+    }
+
+    @Override
+    public void setClob(int parameterIndex, Reader reader, long length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Clob objects are not supported");
+    }
+
+    @Override
+    public void setBlob(int parameterIndex, InputStream inputStream, long length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Blob objects are not supported");
+    }
+
+    @Override
+    public void setNClob(int parameterIndex, Reader reader, long length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("NClob objects are not supported");
+    }
+
+    @Override
+    public void setSQLXML(int parameterIndex, SQLXML xmlObject) throws SQLException {
+        throw new SQLFeatureNotSupportedException("SQLXML objects are not supported");
+    }
+
+    @Override
+    public void setObject(int parameterIndex, Object x, int targetSqlType, int scaleOrLength) throws SQLException {
+        setObject(parameterIndex, x);
+    }
+
+    @Override
+    public void setAsciiStream(int parameterIndex, InputStream x, long length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("ASCII streams are not supported");
+    }
+
+    @Override
+    public void setBinaryStream(int parameterIndex, InputStream x, long length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Binary streams are not supported");
+    }
+
+    @Override
+    public void setCharacterStream(int parameterIndex, Reader reader, long length) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Character streams are not supported");
+    }
+
+    @Override
+    public void setAsciiStream(int parameterIndex, InputStream x) throws SQLException {
+        throw new SQLFeatureNotSupportedException("ASCII streams are not supported");
+    }
+
+    @Override
+    public void setBinaryStream(int parameterIndex, InputStream x) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Binary streams are not supported");
+    }
+
+    @Override
+    public void setCharacterStream(int parameterIndex, Reader reader) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Character streams are not supported");
+    }
+
+    @Override
+    public void setNCharacterStream(int parameterIndex, Reader value) throws SQLException {
+        throw new SQLFeatureNotSupportedException("NCharacter streams are not supported");
+    }
+
+    @Override
+    public void setClob(int parameterIndex, Reader reader) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Clob objects are not supported");
+    }
+
+    @Override
+    public void setBlob(int parameterIndex, InputStream inputStream) throws SQLException {
+        throw new SQLFeatureNotSupportedException("Blob objects are not supported");
+    }
+
+    @Override
+    public void setNClob(int parameterIndex, Reader reader) throws SQLException {
+        throw new SQLFeatureNotSupportedException("NClob objects are not supported");
+    }
+    
+    /**
+     * Build the final SQL string by replacing parameter placeholders with actual values
+     */
+    private String buildSqlWithParameters() throws SQLException {
+        String sql = originalSql;
+        
+        // Simple parameter substitution (not SQL-injection safe, but good enough for demo)
+        // In a production implementation, you would use proper parameter binding
+        for (Map.Entry<Integer, Object> entry : parameters.entrySet()) {
+            String placeholder = "\\?"; // Find first ? placeholder
+            String replacement;
+            
+            Object value = entry.getValue();
+            if (value == null) {
+                replacement = "NULL";
+            } else if (value instanceof String) {
+                // Escape single quotes and wrap in quotes
+                replacement = "'" + value.toString().replace("'", "''") + "'";
+            } else if (value instanceof Number || value instanceof Boolean) {
+                replacement = value.toString();
+            } else if (value instanceof Date) {
+                replacement = "'" + value.toString() + "'";
+            } else if (value instanceof Timestamp) {
+                replacement = "'" + value.toString() + "'";
+            } else {
+                replacement = "'" + value.toString().replace("'", "''") + "'";
+            }
+            
+            // Replace the first occurrence of ?
+            sql = sql.replaceFirst(placeholder, replacement);
+        }
+        
+        return sql;
+    }
+}

jdbc-driver/src/main/java/com/seaweedfs/jdbc/SeaweedFSResultSetMetaData.java

@@ -0,0 +1,202 @@
+package com.seaweedfs.jdbc;
+
+import java.sql.ResultSetMetaData;
+import java.sql.SQLException;
+import java.sql.Types;
+import java.util.List;
+
+/**
+ * ResultSetMetaData implementation for SeaweedFS JDBC
+ */
+public class SeaweedFSResultSetMetaData implements ResultSetMetaData {
+    
+    private final List<String> columnNames;
+    
+    public SeaweedFSResultSetMetaData(List<String> columnNames) {
+        this.columnNames = columnNames;
+    }
+
+    @Override
+    public int getColumnCount() throws SQLException {
+        return columnNames.size();
+    }
+
+    @Override
+    public boolean isAutoIncrement(int column) throws SQLException {
+        checkColumnIndex(column);
+        return false; // SeaweedFS doesn't have auto-increment columns
+    }
+
+    @Override
+    public boolean isCaseSensitive(int column) throws SQLException {
+        checkColumnIndex(column);
+        return true; // Assume case sensitive
+    }
+
+    @Override
+    public boolean isSearchable(int column) throws SQLException {
+        checkColumnIndex(column);
+        return true; // All columns are searchable
+    }
+
+    @Override
+    public boolean isCurrency(int column) throws SQLException {
+        checkColumnIndex(column);
+        return false; // No currency columns
+    }
+
+    @Override
+    public int isNullable(int column) throws SQLException {
+        checkColumnIndex(column);
+        return columnNullable; // Assume nullable
+    }
+
+    @Override
+    public boolean isSigned(int column) throws SQLException {
+        checkColumnIndex(column);
+        // For simplicity, assume all numeric types are signed
+        return true;
+    }
+
+    @Override
+    public int getColumnDisplaySize(int column) throws SQLException {
+        checkColumnIndex(column);
+        return 50; // Default display size
+    }
+
+    @Override
+    public String getColumnLabel(int column) throws SQLException {
+        checkColumnIndex(column);
+        return columnNames.get(column - 1);
+    }
+
+    @Override
+    public String getColumnName(int column) throws SQLException {
+        checkColumnIndex(column);
+        return columnNames.get(column - 1);
+    }
+
+    @Override
+    public String getSchemaName(int column) throws SQLException {
+        checkColumnIndex(column);
+        return ""; // No schema concept in SeaweedFS
+    }
+
+    @Override
+    public int getPrecision(int column) throws SQLException {
+        checkColumnIndex(column);
+        return 0; // Unknown precision
+    }
+
+    @Override
+    public int getScale(int column) throws SQLException {
+        checkColumnIndex(column);
+        return 0; // Unknown scale
+    }
+
+    @Override
+    public String getTableName(int column) throws SQLException {
+        checkColumnIndex(column);
+        return ""; // Table name not available in result set metadata
+    }
+
+    @Override
+    public String getCatalogName(int column) throws SQLException {
+        checkColumnIndex(column);
+        return ""; // No catalog concept in SeaweedFS
+    }
+
+    @Override
+    public int getColumnType(int column) throws SQLException {
+        checkColumnIndex(column);
+        // For simplicity, we'll determine type based on column name patterns
+        String columnName = columnNames.get(column - 1).toLowerCase();
+        
+        if (columnName.contains("timestamp") || columnName.contains("time") || columnName.equals("_timestamp_ns")) {
+            return Types.TIMESTAMP;
+        } else if (columnName.contains("id") || columnName.contains("count") || columnName.contains("size")) {
+            return Types.BIGINT;
+        } else if (columnName.contains("amount") || columnName.contains("price") || columnName.contains("rate")) {
+            return Types.DECIMAL;
+        } else if (columnName.contains("flag") || columnName.contains("enabled") || columnName.contains("active")) {
+            return Types.BOOLEAN;
+        } else {
+            return Types.VARCHAR; // Default to VARCHAR
+        }
+    }
+
+    @Override
+    public String getColumnTypeName(int column) throws SQLException {
+        int sqlType = getColumnType(column);
+        switch (sqlType) {
+            case Types.VARCHAR:
+                return "VARCHAR";
+            case Types.BIGINT:
+                return "BIGINT";
+            case Types.DECIMAL:
+                return "DECIMAL";
+            case Types.BOOLEAN:
+                return "BOOLEAN";
+            case Types.TIMESTAMP:
+                return "TIMESTAMP";
+            default:
+                return "VARCHAR";
+        }
+    }
+
+    @Override
+    public boolean isReadOnly(int column) throws SQLException {
+        checkColumnIndex(column);
+        return true; // SeaweedFS is read-only
+    }
+
+    @Override
+    public boolean isWritable(int column) throws SQLException {
+        checkColumnIndex(column);
+        return false; // SeaweedFS is read-only
+    }
+
+    @Override
+    public boolean isDefinitelyWritable(int column) throws SQLException {
+        checkColumnIndex(column);
+        return false; // SeaweedFS is read-only
+    }
+
+    @Override
+    public String getColumnClassName(int column) throws SQLException {
+        int sqlType = getColumnType(column);
+        switch (sqlType) {
+            case Types.VARCHAR:
+                return "java.lang.String";
+            case Types.BIGINT:
+                return "java.lang.Long";
+            case Types.DECIMAL:
+                return "java.math.BigDecimal";
+            case Types.BOOLEAN:
+                return "java.lang.Boolean";
+            case Types.TIMESTAMP:
+                return "java.sql.Timestamp";
+            default:
+                return "java.lang.String";
+        }
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        if (iface.isAssignableFrom(getClass())) {
+            return iface.cast(this);
+        }
+        throw new SQLException("Cannot unwrap to " + iface.getName());
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return iface.isAssignableFrom(getClass());
+    }
+    
+    private void checkColumnIndex(int column) throws SQLException {
+        if (column < 1 || column > columnNames.size()) {
+            throw new SQLException("Column index " + column + " is out of range (1-" + columnNames.size() + ")");
+        }
+    }
+}

jdbc-driver/src/main/java/com/seaweedfs/jdbc/SeaweedFSStatement.java

@@ -0,0 +1,389 @@
+package com.seaweedfs.jdbc;
+
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+import java.sql.*;
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * JDBC Statement implementation for SeaweedFS
+ */
+public class SeaweedFSStatement implements Statement {
+    
+    private static final Logger logger = LoggerFactory.getLogger(SeaweedFSStatement.class);
+    
+    protected final SeaweedFSConnection connection;
+    private boolean closed = false;
+    private ResultSet currentResultSet = null;
+    private int updateCount = -1;
+    private int maxRows = 0;
+    private int queryTimeout = 0;
+    private int fetchSize = 1000;
+    private List<String> batch = new ArrayList<>();
+    
+    public SeaweedFSStatement(SeaweedFSConnection connection) {
+        this.connection = connection;
+    }
+
+    @Override
+    public ResultSet executeQuery(String sql) throws SQLException {
+        checkClosed();
+        logger.debug("Executing query: {}", sql);
+        
+        try {
+            // Send query to server
+            connection.sendMessage((byte)0x03, sql.getBytes()); // JDBC_MSG_EXECUTE_QUERY
+            
+            // Read response
+            SeaweedFSConnection.Response response = connection.readResponse();
+            
+            if (response.type == (byte)0x01) { // JDBC_RESP_ERROR
+                throw new SQLException("Query failed: " + new String(response.data));
+            } else if (response.type == (byte)0x02) { // JDBC_RESP_RESULT_SET
+                // Parse result set data
+                currentResultSet = new SeaweedFSResultSet(this, response.data);
+                updateCount = -1;
+                return currentResultSet;
+            } else {
+                throw new SQLException("Unexpected response type: " + response.type);
+            }
+            
+        } catch (Exception e) {
+            throw new SQLException("Failed to execute query: " + e.getMessage(), e);
+        }
+    }
+
+    @Override
+    public int executeUpdate(String sql) throws SQLException {
+        checkClosed();
+        logger.debug("Executing update: {}", sql);
+        
+        try {
+            // Send update to server
+            connection.sendMessage((byte)0x04, sql.getBytes()); // JDBC_MSG_EXECUTE_UPDATE
+            
+            // Read response
+            SeaweedFSConnection.Response response = connection.readResponse();
+            
+            if (response.type == (byte)0x01) { // JDBC_RESP_ERROR
+                throw new SQLException("Update failed: " + new String(response.data));
+            } else if (response.type == (byte)0x03) { // JDBC_RESP_UPDATE_COUNT
+                // Parse update count
+                updateCount = parseUpdateCount(response.data);
+                currentResultSet = null;
+                return updateCount;
+            } else {
+                throw new SQLException("Unexpected response type: " + response.type);
+            }
+            
+        } catch (Exception e) {
+            throw new SQLException("Failed to execute update: " + e.getMessage(), e);
+        }
+    }
+
+    @Override
+    public void close() throws SQLException {
+        if (!closed) {
+            if (currentResultSet != null) {
+                currentResultSet.close();
+                currentResultSet = null;
+            }
+            closed = true;
+            logger.debug("Statement closed");
+        }
+    }
+
+    @Override
+    public int getMaxFieldSize() throws SQLException {
+        checkClosed();
+        return 0; // No limit
+    }
+
+    @Override
+    public void setMaxFieldSize(int max) throws SQLException {
+        checkClosed();
+        // No-op
+    }
+
+    @Override
+    public int getMaxRows() throws SQLException {
+        checkClosed();
+        return maxRows;
+    }
+
+    @Override
+    public void setMaxRows(int max) throws SQLException {
+        checkClosed();
+        this.maxRows = max;
+    }
+
+    @Override
+    public void setEscapeProcessing(boolean enable) throws SQLException {
+        checkClosed();
+        // No-op
+    }
+
+    @Override
+    public int getQueryTimeout() throws SQLException {
+        checkClosed();
+        return queryTimeout;
+    }
+
+    @Override
+    public void setQueryTimeout(int seconds) throws SQLException {
+        checkClosed();
+        this.queryTimeout = seconds;
+    }
+
+    @Override
+    public void cancel() throws SQLException {
+        checkClosed();
+        // No-op - cancellation not supported
+    }
+
+    @Override
+    public SQLWarning getWarnings() throws SQLException {
+        checkClosed();
+        return null;
+    }
+
+    @Override
+    public void clearWarnings() throws SQLException {
+        checkClosed();
+        // No-op
+    }
+
+    @Override
+    public void setCursorName(String name) throws SQLException {
+        checkClosed();
+        // No-op - cursors not supported
+    }
+
+    @Override
+    public boolean execute(String sql) throws SQLException {
+        checkClosed();
+        logger.debug("Executing: {}", sql);
+        
+        // Determine if this is likely a query or update
+        String trimmedSql = sql.trim().toUpperCase();
+        if (trimmedSql.startsWith("SELECT") || 
+            trimmedSql.startsWith("SHOW") || 
+            trimmedSql.startsWith("DESCRIBE") ||
+            trimmedSql.startsWith("DESC") ||
+            trimmedSql.startsWith("EXPLAIN")) {
+            // It's a query
+            executeQuery(sql);
+            return true;
+        } else {
+            // It's an update
+            executeUpdate(sql);
+            return false;
+        }
+    }
+
+    @Override
+    public ResultSet getResultSet() throws SQLException {
+        checkClosed();
+        return currentResultSet;
+    }
+
+    @Override
+    public int getUpdateCount() throws SQLException {
+        checkClosed();
+        return updateCount;
+    }
+
+    @Override
+    public boolean getMoreResults() throws SQLException {
+        checkClosed();
+        if (currentResultSet != null) {
+            currentResultSet.close();
+            currentResultSet = null;
+        }
+        updateCount = -1;
+        return false; // No more results
+    }
+
+    @Override
+    public void setFetchDirection(int direction) throws SQLException {
+        checkClosed();
+        if (direction != ResultSet.FETCH_FORWARD) {
+            throw new SQLException("Only FETCH_FORWARD is supported");
+        }
+    }
+
+    @Override
+    public int getFetchDirection() throws SQLException {
+        checkClosed();
+        return ResultSet.FETCH_FORWARD;
+    }
+
+    @Override
+    public void setFetchSize(int rows) throws SQLException {
+        checkClosed();
+        this.fetchSize = rows;
+    }
+
+    @Override
+    public int getFetchSize() throws SQLException {
+        checkClosed();
+        return fetchSize;
+    }
+
+    @Override
+    public int getResultSetConcurrency() throws SQLException {
+        checkClosed();
+        return ResultSet.CONCUR_READ_ONLY;
+    }
+
+    @Override
+    public int getResultSetType() throws SQLException {
+        checkClosed();
+        return ResultSet.TYPE_FORWARD_ONLY;
+    }
+
+    @Override
+    public void addBatch(String sql) throws SQLException {
+        checkClosed();
+        batch.add(sql);
+    }
+
+    @Override
+    public void clearBatch() throws SQLException {
+        checkClosed();
+        batch.clear();
+    }
+
+    @Override
+    public int[] executeBatch() throws SQLException {
+        checkClosed();
+        int[] results = new int[batch.size()];
+        
+        for (int i = 0; i < batch.size(); i++) {
+            try {
+                results[i] = executeUpdate(batch.get(i));
+            } catch (SQLException e) {
+                results[i] = EXECUTE_FAILED;
+            }
+        }
+        
+        batch.clear();
+        return results;
+    }
+
+    @Override
+    public Connection getConnection() throws SQLException {
+        checkClosed();
+        return connection;
+    }
+
+    @Override
+    public boolean getMoreResults(int current) throws SQLException {
+        checkClosed();
+        return getMoreResults();
+    }
+
+    @Override
+    public ResultSet getGeneratedKeys() throws SQLException {
+        throw new SQLFeatureNotSupportedException("Generated keys are not supported");
+    }
+
+    @Override
+    public int executeUpdate(String sql, int autoGeneratedKeys) throws SQLException {
+        return executeUpdate(sql);
+    }
+
+    @Override
+    public int executeUpdate(String sql, int[] columnIndexes) throws SQLException {
+        return executeUpdate(sql);
+    }
+
+    @Override
+    public int executeUpdate(String sql, String[] columnNames) throws SQLException {
+        return executeUpdate(sql);
+    }
+
+    @Override
+    public boolean execute(String sql, int autoGeneratedKeys) throws SQLException {
+        return execute(sql);
+    }
+
+    @Override
+    public boolean execute(String sql, int[] columnIndexes) throws SQLException {
+        return execute(sql);
+    }
+
+    @Override
+    public boolean execute(String sql, String[] columnNames) throws SQLException {
+        return execute(sql);
+    }
+
+    @Override
+    public int getResultSetHoldability() throws SQLException {
+        checkClosed();
+        return ResultSet.CLOSE_CURSORS_AT_COMMIT;
+    }
+
+    @Override
+    public boolean isClosed() throws SQLException {
+        return closed;
+    }
+
+    @Override
+    public void setPoolable(boolean poolable) throws SQLException {
+        checkClosed();
+        // No-op
+    }
+
+    @Override
+    public boolean isPoolable() throws SQLException {
+        checkClosed();
+        return false;
+    }
+
+    @Override
+    public void closeOnCompletion() throws SQLException {
+        checkClosed();
+        // No-op
+    }
+
+    @Override
+    public boolean isCloseOnCompletion() throws SQLException {
+        checkClosed();
+        return false;
+    }
+
+    @Override
+    public <T> T unwrap(Class<T> iface) throws SQLException {
+        if (iface.isAssignableFrom(getClass())) {
+            return iface.cast(this);
+        }
+        throw new SQLException("Cannot unwrap to " + iface.getName());
+    }
+
+    @Override
+    public boolean isWrapperFor(Class<?> iface) throws SQLException {
+        return iface.isAssignableFrom(getClass());
+    }
+    
+    protected void checkClosed() throws SQLException {
+        if (closed) {
+            throw new SQLException("Statement is closed");
+        }
+        if (connection.isClosed()) {
+            throw new SQLException("Connection is closed");
+        }
+    }
+    
+    private int parseUpdateCount(byte[] data) {
+        if (data.length >= 4) {
+            return ((data[0] & 0xFF) << 24) |
+                   ((data[1] & 0xFF) << 16) |
+                   ((data[2] & 0xFF) << 8) |
+                   (data[3] & 0xFF);
+        }
+        return 0;
+    }
+}

jdbc-driver/src/main/resources/META-INF/services/java.sql.Driver

@@ -0,0 +1 @@
+com.seaweedfs.jdbc.SeaweedFSDriver

jdbc-driver/src/test/java/com/seaweedfs/jdbc/SeaweedFSDriverTest.java

@@ -0,0 +1,75 @@
+package com.seaweedfs.jdbc;
+
+import org.junit.jupiter.api.Test;
+import static org.junit.jupiter.api.Assertions.*;
+
+import java.sql.DriverManager;
+import java.sql.SQLException;
+
+/**
+ * Basic tests for SeaweedFS JDBC driver
+ */
+public class SeaweedFSDriverTest {
+
+    @Test
+    public void testDriverRegistration() {
+        // Driver should be automatically registered via META-INF/services
+        assertDoesNotThrow(() -> {
+            Class.forName("com.seaweedfs.jdbc.SeaweedFSDriver");
+        });
+    }
+
+    @Test
+    public void testURLAcceptance() throws SQLException {
+        SeaweedFSDriver driver = new SeaweedFSDriver();
+        
+        // Valid URLs
+        assertTrue(driver.acceptsURL("jdbc:seaweedfs://localhost:8089/default"));
+        assertTrue(driver.acceptsURL("jdbc:seaweedfs://server:9000/test"));
+        assertTrue(driver.acceptsURL("jdbc:seaweedfs://192.168.1.100:8089/mydb"));
+        
+        // Invalid URLs
+        assertFalse(driver.acceptsURL("jdbc:mysql://localhost:3306/test"));
+        assertFalse(driver.acceptsURL("jdbc:postgresql://localhost:5432/test"));
+        assertFalse(driver.acceptsURL(null));
+        assertFalse(driver.acceptsURL(""));
+        assertFalse(driver.acceptsURL("not-a-url"));
+    }
+
+    @Test
+    public void testDriverInfo() {
+        SeaweedFSDriver driver = new SeaweedFSDriver();
+        
+        assertEquals(SeaweedFSDriver.DRIVER_MAJOR_VERSION, driver.getMajorVersion());
+        assertEquals(SeaweedFSDriver.DRIVER_MINOR_VERSION, driver.getMinorVersion());
+        assertFalse(driver.jdbcCompliant()); // We're not fully JDBC compliant
+        
+        assertNotNull(SeaweedFSDriver.getDriverInfo());
+        assertTrue(SeaweedFSDriver.getDriverInfo().contains("SeaweedFS"));
+        assertTrue(SeaweedFSDriver.getDriverInfo().contains("JDBC"));
+    }
+
+    @Test
+    public void testPropertyInfo() throws SQLException {
+        SeaweedFSDriver driver = new SeaweedFSDriver();
+        
+        var properties = driver.getPropertyInfo("jdbc:seaweedfs://localhost:8089/default", null);
+        assertNotNull(properties);
+        assertTrue(properties.length > 0);
+        
+        // Check that basic properties are present
+        boolean foundHost = false, foundPort = false, foundDatabase = false;
+        for (var prop : properties) {
+            if ("host".equals(prop.name)) foundHost = true;
+            if ("port".equals(prop.name)) foundPort = true;
+            if ("database".equals(prop.name)) foundDatabase = true;
+        }
+        
+        assertTrue(foundHost, "Host property should be present");
+        assertTrue(foundPort, "Port property should be present");
+        assertTrue(foundDatabase, "Database property should be present");
+    }
+
+    // Note: Connection tests would require a running SeaweedFS JDBC server
+    // These tests would be part of integration tests, not unit tests
+}

weed/command/command.go

@@ -30,6 +30,7 @@ var Commands = []*Command{
 	cmdFix,
 	cmdFuse,
 	cmdIam,
+	cmdJdbc,
 	cmdMaster,
 	cmdMasterFollower,
 	cmdMount,

weed/command/jdbc.go

@@ -0,0 +1,141 @@
+package command
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"os/signal"
+	"syscall"
+	"time"
+
+	weed_server "github.com/seaweedfs/seaweedfs/weed/server"
+	"github.com/seaweedfs/seaweedfs/weed/util"
+)
+
+var (
+	jdbcOptions JdbcOptions
+)
+
+type JdbcOptions struct {
+	host       *string
+	port       *int
+	masterAddr *string
+}
+
+func init() {
+	cmdJdbc.Run = runJdbc // break init cycle
+	jdbcOptions.host = cmdJdbc.Flag.String("host", "localhost", "JDBC server host")
+	jdbcOptions.port = cmdJdbc.Flag.Int("port", 8089, "JDBC server port")
+	jdbcOptions.masterAddr = cmdJdbc.Flag.String("master", "localhost:9333", "SeaweedFS master server address")
+}
+
+var cmdJdbc = &Command{
+	UsageLine: "jdbc -port=8089 -master=<master_server>",
+	Short:     "start a JDBC server for SQL queries",
+	Long: `Start a JDBC server that provides SQL query access to SeaweedFS.
+	
+This JDBC server allows standard JDBC clients and tools to connect to SeaweedFS
+and execute SQL queries against MQ topics. It implements a subset of the JDBC
+protocol for compatibility with most database tools and applications.
+
+Examples:
+
+	# Start JDBC server on default port 8089
+	weed jdbc
+	
+	# Start on custom port with specific master
+	weed jdbc -port=8090 -master=master1:9333
+	
+	# Allow connections from any host
+	weed jdbc -host=0.0.0.0 -port=8089
+
+Clients can then connect using JDBC URL:
+	jdbc:seaweedfs://hostname:port/database
+
+Supported SQL operations:
+	- SELECT queries on MQ topics
+	- DESCRIBE/DESC commands
+	- SHOW DATABASES/TABLES commands
+	- Aggregation functions (COUNT, SUM, AVG, MIN, MAX)
+	- WHERE clauses with filtering
+	- System columns (_timestamp_ns, _key, _source)
+
+Compatible with:
+	- Standard JDBC tools (DBeaver, IntelliJ DataGrip, etc.)
+	- Business Intelligence tools (Tableau, Power BI, etc.)
+	- Java applications using JDBC drivers
+	- SQL reporting tools
+
+`,
+}
+
+func runJdbc(cmd *Command, args []string) bool {
+
+	util.LoadConfiguration("security", false)
+
+	// Validate options
+	if *jdbcOptions.masterAddr == "" {
+		fmt.Fprintf(os.Stderr, "Error: master address is required\n")
+		return false
+	}
+
+	// Create JDBC server
+	jdbcServer, err := weed_server.NewJDBCServer(*jdbcOptions.host, *jdbcOptions.port, *jdbcOptions.masterAddr)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error creating JDBC server: %v\n", err)
+		return false
+	}
+
+	// Start the server
+	fmt.Printf("Starting SeaweedFS JDBC Server...\n")
+	fmt.Printf("Host: %s\n", *jdbcOptions.host)
+	fmt.Printf("Port: %d\n", *jdbcOptions.port)
+	fmt.Printf("Master: %s\n", *jdbcOptions.masterAddr)
+	fmt.Printf("\nJDBC URL: jdbc:seaweedfs://%s:%d/default\n", *jdbcOptions.host, *jdbcOptions.port)
+	fmt.Printf("\nSupported operations:\n")
+	fmt.Printf("  - SELECT queries on MQ topics\n")
+	fmt.Printf("  - DESCRIBE/DESC table_name\n")
+	fmt.Printf("  - SHOW DATABASES\n")
+	fmt.Printf("  - SHOW TABLES\n")
+	fmt.Printf("  - Aggregations: COUNT, SUM, AVG, MIN, MAX\n")
+	fmt.Printf("  - System columns: _timestamp_ns, _key, _source\n")
+	fmt.Printf("\nReady for JDBC connections!\n\n")
+
+	err = jdbcServer.Start()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, "Error starting JDBC server: %v\n", err)
+		return false
+	}
+
+	// Set up signal handling for graceful shutdown
+	sigChan := make(chan os.Signal, 1)
+	signal.Notify(sigChan, syscall.SIGINT, syscall.SIGTERM)
+
+	// Wait for shutdown signal
+	<-sigChan
+	fmt.Printf("\nReceived shutdown signal, stopping JDBC server...\n")
+
+	// Create context with timeout for graceful shutdown
+	ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
+	defer cancel()
+
+	// Stop the server with timeout
+	done := make(chan error, 1)
+	go func() {
+		done <- jdbcServer.Stop()
+	}()
+
+	select {
+	case err := <-done:
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Error stopping JDBC server: %v\n", err)
+			return false
+		}
+		fmt.Printf("JDBC server stopped successfully\n")
+	case <-ctx.Done():
+		fmt.Fprintf(os.Stderr, "Timeout waiting for JDBC server to stop\n")
+		return false
+	}
+
+	return true
+}

weed/server/jdbc_server.go

@@ -0,0 +1,524 @@
+package weed_server
+
+import (
+	"bufio"
+	"context"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"net"
+	"sync"
+	"time"
+
+	"github.com/seaweedfs/seaweedfs/weed/glog"
+	"github.com/seaweedfs/seaweedfs/weed/query/engine"
+	"github.com/seaweedfs/seaweedfs/weed/query/sqltypes"
+)
+
+// JDBCServer provides JDBC-compatible access to SeaweedFS SQL engine
+type JDBCServer struct {
+	host        string
+	port        int
+	masterAddr  string
+	listener    net.Listener
+	sqlEngine   *engine.SQLEngine
+	connections map[net.Conn]*JDBCConnection
+	connMutex   sync.RWMutex
+	shutdown    chan struct{}
+	wg          sync.WaitGroup
+}
+
+// JDBCConnection represents a single JDBC client connection
+type JDBCConnection struct {
+	conn         net.Conn
+	reader       *bufio.Reader
+	writer       *bufio.Writer
+	database     string
+	autoCommit   bool
+	connectionID uint32
+	closed       bool
+	mutex        sync.Mutex
+}
+
+// JDBC Protocol Constants
+const (
+	// Message Types
+	JDBC_MSG_CONNECT        = 0x01
+	JDBC_MSG_DISCONNECT     = 0x02
+	JDBC_MSG_EXECUTE_QUERY  = 0x03
+	JDBC_MSG_EXECUTE_UPDATE = 0x04
+	JDBC_MSG_PREPARE        = 0x05
+	JDBC_MSG_EXECUTE_PREP   = 0x06
+	JDBC_MSG_GET_METADATA   = 0x07
+	JDBC_MSG_SET_AUTOCOMMIT = 0x08
+	JDBC_MSG_COMMIT         = 0x09
+	JDBC_MSG_ROLLBACK       = 0x0A
+
+	// Response Types
+	JDBC_RESP_OK           = 0x00
+	JDBC_RESP_ERROR        = 0x01
+	JDBC_RESP_RESULT_SET   = 0x02
+	JDBC_RESP_UPDATE_COUNT = 0x03
+	JDBC_RESP_METADATA     = 0x04
+
+	// Default values
+	DEFAULT_JDBC_PORT = 8089
+)
+
+// NewJDBCServer creates a new JDBC server instance
+func NewJDBCServer(host string, port int, masterAddr string) (*JDBCServer, error) {
+	if port <= 0 {
+		port = DEFAULT_JDBC_PORT
+	}
+	if host == "" {
+		host = "localhost"
+	}
+
+	// Create SQL engine
+	sqlEngine := engine.NewSQLEngine(masterAddr)
+
+	server := &JDBCServer{
+		host:        host,
+		port:        port,
+		masterAddr:  masterAddr,
+		sqlEngine:   sqlEngine,
+		connections: make(map[net.Conn]*JDBCConnection),
+		shutdown:    make(chan struct{}),
+	}
+
+	return server, nil
+}
+
+// Start begins listening for JDBC connections
+func (s *JDBCServer) Start() error {
+	addr := fmt.Sprintf("%s:%d", s.host, s.port)
+	listener, err := net.Listen("tcp", addr)
+	if err != nil {
+		return fmt.Errorf("failed to start JDBC server on %s: %v", addr, err)
+	}
+
+	s.listener = listener
+	glog.Infof("JDBC Server listening on %s", addr)
+
+	s.wg.Add(1)
+	go s.acceptConnections()
+
+	return nil
+}
+
+// Stop gracefully shuts down the JDBC server
+func (s *JDBCServer) Stop() error {
+	close(s.shutdown)
+
+	if s.listener != nil {
+		s.listener.Close()
+	}
+
+	// Close all connections
+	s.connMutex.Lock()
+	for conn, jdbcConn := range s.connections {
+		jdbcConn.close()
+		conn.Close()
+	}
+	s.connections = make(map[net.Conn]*JDBCConnection)
+	s.connMutex.Unlock()
+
+	s.wg.Wait()
+	glog.Infof("JDBC Server stopped")
+	return nil
+}
+
+// acceptConnections handles incoming JDBC connections
+func (s *JDBCServer) acceptConnections() {
+	defer s.wg.Done()
+
+	for {
+		select {
+		case <-s.shutdown:
+			return
+		default:
+		}
+
+		conn, err := s.listener.Accept()
+		if err != nil {
+			select {
+			case <-s.shutdown:
+				return
+			default:
+				glog.Errorf("Failed to accept JDBC connection: %v", err)
+				continue
+			}
+		}
+
+		s.wg.Add(1)
+		go s.handleConnection(conn)
+	}
+}
+
+// handleConnection processes a single JDBC connection
+func (s *JDBCServer) handleConnection(conn net.Conn) {
+	defer s.wg.Done()
+	defer conn.Close()
+
+	// Create JDBC connection wrapper
+	jdbcConn := &JDBCConnection{
+		conn:         conn,
+		reader:       bufio.NewReader(conn),
+		writer:       bufio.NewWriter(conn),
+		database:     "default",
+		autoCommit:   true,
+		connectionID: s.generateConnectionID(),
+	}
+
+	// Register connection
+	s.connMutex.Lock()
+	s.connections[conn] = jdbcConn
+	s.connMutex.Unlock()
+
+	// Clean up on exit
+	defer func() {
+		s.connMutex.Lock()
+		delete(s.connections, conn)
+		s.connMutex.Unlock()
+	}()
+
+	glog.Infof("New JDBC connection from %s (ID: %d)", conn.RemoteAddr(), jdbcConn.connectionID)
+
+	// Handle connection messages
+	for {
+		select {
+		case <-s.shutdown:
+			return
+		default:
+		}
+
+		// Set read timeout
+		conn.SetReadDeadline(time.Now().Add(30 * time.Second))
+
+		err := s.handleMessage(jdbcConn)
+		if err != nil {
+			if err == io.EOF {
+				glog.Infof("JDBC client disconnected (ID: %d)", jdbcConn.connectionID)
+			} else {
+				glog.Errorf("Error handling JDBC message (ID: %d): %v", jdbcConn.connectionID, err)
+			}
+			return
+		}
+	}
+}
+
+// handleMessage processes a single JDBC protocol message
+func (s *JDBCServer) handleMessage(conn *JDBCConnection) error {
+	// Read message header (message type + length)
+	header := make([]byte, 5)
+	_, err := io.ReadFull(conn.reader, header)
+	if err != nil {
+		return err
+	}
+
+	msgType := header[0]
+	msgLength := binary.BigEndian.Uint32(header[1:5])
+
+	// Read message body
+	msgBody := make([]byte, msgLength)
+	if msgLength > 0 {
+		_, err = io.ReadFull(conn.reader, msgBody)
+		if err != nil {
+			return err
+		}
+	}
+
+	// Process message based on type
+	switch msgType {
+	case JDBC_MSG_CONNECT:
+		return s.handleConnect(conn, msgBody)
+	case JDBC_MSG_DISCONNECT:
+		return s.handleDisconnect(conn)
+	case JDBC_MSG_EXECUTE_QUERY:
+		return s.handleExecuteQuery(conn, msgBody)
+	case JDBC_MSG_EXECUTE_UPDATE:
+		return s.handleExecuteUpdate(conn, msgBody)
+	case JDBC_MSG_GET_METADATA:
+		return s.handleGetMetadata(conn, msgBody)
+	case JDBC_MSG_SET_AUTOCOMMIT:
+		return s.handleSetAutoCommit(conn, msgBody)
+	case JDBC_MSG_COMMIT:
+		return s.handleCommit(conn)
+	case JDBC_MSG_ROLLBACK:
+		return s.handleRollback(conn)
+	default:
+		return s.sendError(conn, fmt.Errorf("unknown message type: %d", msgType))
+	}
+}
+
+// handleConnect processes JDBC connection request
+func (s *JDBCServer) handleConnect(conn *JDBCConnection, msgBody []byte) error {
+	// Parse connection string (database name)
+	if len(msgBody) > 0 {
+		conn.database = string(msgBody)
+	}
+
+	glog.Infof("JDBC client connected to database: %s (ID: %d)", conn.database, conn.connectionID)
+
+	// Send OK response
+	return s.sendOK(conn, "Connected successfully")
+}
+
+// handleDisconnect processes JDBC disconnect request
+func (s *JDBCServer) handleDisconnect(conn *JDBCConnection) error {
+	glog.Infof("JDBC client disconnecting (ID: %d)", conn.connectionID)
+	conn.close()
+	return io.EOF // This will cause the connection handler to exit
+}
+
+// handleExecuteQuery processes SQL SELECT queries
+func (s *JDBCServer) handleExecuteQuery(conn *JDBCConnection, msgBody []byte) error {
+	sql := string(msgBody)
+
+	glog.V(2).Infof("Executing query (ID: %d): %s", conn.connectionID, sql)
+
+	// Execute SQL using the query engine
+	ctx := context.Background()
+	result, err := s.sqlEngine.ExecuteSQL(ctx, sql)
+	if err != nil {
+		return s.sendError(conn, err)
+	}
+
+	if result.Error != nil {
+		return s.sendError(conn, result.Error)
+	}
+
+	// Send result set
+	return s.sendResultSet(conn, result)
+}
+
+// handleExecuteUpdate processes SQL UPDATE/INSERT/DELETE queries
+func (s *JDBCServer) handleExecuteUpdate(conn *JDBCConnection, msgBody []byte) error {
+	sql := string(msgBody)
+
+	glog.V(2).Infof("Executing update (ID: %d): %s", conn.connectionID, sql)
+
+	// For now, treat updates same as queries since SeaweedFS SQL is read-only
+	ctx := context.Background()
+	result, err := s.sqlEngine.ExecuteSQL(ctx, sql)
+	if err != nil {
+		return s.sendError(conn, err)
+	}
+
+	if result.Error != nil {
+		return s.sendError(conn, result.Error)
+	}
+
+	// Send update count (0 for read-only operations)
+	return s.sendUpdateCount(conn, 0)
+}
+
+// handleGetMetadata processes JDBC metadata requests
+func (s *JDBCServer) handleGetMetadata(conn *JDBCConnection, msgBody []byte) error {
+	metadataType := string(msgBody)
+
+	glog.V(2).Infof("Getting metadata (ID: %d): %s", conn.connectionID, metadataType)
+
+	switch metadataType {
+	case "tables":
+		return s.sendTablesMetadata(conn)
+	case "databases", "schemas":
+		return s.sendDatabasesMetadata(conn)
+	default:
+		return s.sendError(conn, fmt.Errorf("unsupported metadata type: %s", metadataType))
+	}
+}
+
+// handleSetAutoCommit processes autocommit setting
+func (s *JDBCServer) handleSetAutoCommit(conn *JDBCConnection, msgBody []byte) error {
+	autoCommit := len(msgBody) > 0 && msgBody[0] == 1
+	conn.autoCommit = autoCommit
+
+	glog.V(2).Infof("Setting autocommit (ID: %d): %v", conn.connectionID, autoCommit)
+
+	return s.sendOK(conn, fmt.Sprintf("AutoCommit set to %v", autoCommit))
+}
+
+// handleCommit processes transaction commit (no-op for read-only)
+func (s *JDBCServer) handleCommit(conn *JDBCConnection) error {
+	glog.V(2).Infof("Commit (ID: %d): no-op for read-only", conn.connectionID)
+	return s.sendOK(conn, "Commit successful")
+}
+
+// handleRollback processes transaction rollback (no-op for read-only)
+func (s *JDBCServer) handleRollback(conn *JDBCConnection) error {
+	glog.V(2).Infof("Rollback (ID: %d): no-op for read-only", conn.connectionID)
+	return s.sendOK(conn, "Rollback successful")
+}
+
+// sendOK sends a success response
+func (s *JDBCServer) sendOK(conn *JDBCConnection, message string) error {
+	return s.sendResponse(conn, JDBC_RESP_OK, []byte(message))
+}
+
+// sendError sends an error response
+func (s *JDBCServer) sendError(conn *JDBCConnection, err error) error {
+	return s.sendResponse(conn, JDBC_RESP_ERROR, []byte(err.Error()))
+}
+
+// sendResultSet sends query results
+func (s *JDBCServer) sendResultSet(conn *JDBCConnection, result *engine.QueryResult) error {
+	// Serialize result set
+	data := s.serializeResultSet(result)
+	return s.sendResponse(conn, JDBC_RESP_RESULT_SET, data)
+}
+
+// sendUpdateCount sends update operation result
+func (s *JDBCServer) sendUpdateCount(conn *JDBCConnection, count int) error {
+	data := make([]byte, 4)
+	binary.BigEndian.PutUint32(data, uint32(count))
+	return s.sendResponse(conn, JDBC_RESP_UPDATE_COUNT, data)
+}
+
+// sendTablesMetadata sends table metadata
+func (s *JDBCServer) sendTablesMetadata(conn *JDBCConnection) error {
+	// For now, return empty metadata - this would need to query the schema catalog
+	data := s.serializeTablesMetadata([]string{})
+	return s.sendResponse(conn, JDBC_RESP_METADATA, data)
+}
+
+// sendDatabasesMetadata sends database/schema metadata
+func (s *JDBCServer) sendDatabasesMetadata(conn *JDBCConnection) error {
+	// Return default databases
+	databases := []string{"default", "test"}
+	data := s.serializeDatabasesMetadata(databases)
+	return s.sendResponse(conn, JDBC_RESP_METADATA, data)
+}
+
+// sendResponse sends a response with the given type and data
+func (s *JDBCServer) sendResponse(conn *JDBCConnection, responseType byte, data []byte) error {
+	conn.mutex.Lock()
+	defer conn.mutex.Unlock()
+
+	// Write response header
+	header := make([]byte, 5)
+	header[0] = responseType
+	binary.BigEndian.PutUint32(header[1:5], uint32(len(data)))
+
+	_, err := conn.writer.Write(header)
+	if err != nil {
+		return err
+	}
+
+	// Write response data
+	if len(data) > 0 {
+		_, err = conn.writer.Write(data)
+		if err != nil {
+			return err
+		}
+	}
+
+	return conn.writer.Flush()
+}
+
+// serializeResultSet converts QueryResult to JDBC wire format
+func (s *JDBCServer) serializeResultSet(result *engine.QueryResult) []byte {
+	var data []byte
+
+	// Column count
+	colCount := make([]byte, 4)
+	binary.BigEndian.PutUint32(colCount, uint32(len(result.Columns)))
+	data = append(data, colCount...)
+
+	// Column names
+	for _, col := range result.Columns {
+		colName := []byte(col)
+		colLen := make([]byte, 4)
+		binary.BigEndian.PutUint32(colLen, uint32(len(colName)))
+		data = append(data, colLen...)
+		data = append(data, colName...)
+	}
+
+	// Row count
+	rowCount := make([]byte, 4)
+	binary.BigEndian.PutUint32(rowCount, uint32(len(result.Rows)))
+	data = append(data, rowCount...)
+
+	// Rows
+	for _, row := range result.Rows {
+		for _, value := range row {
+			// Convert value to string and serialize
+			valueStr := s.valueToString(value)
+			valueBytes := []byte(valueStr)
+			valueLen := make([]byte, 4)
+			binary.BigEndian.PutUint32(valueLen, uint32(len(valueBytes)))
+			data = append(data, valueLen...)
+			data = append(data, valueBytes...)
+		}
+	}
+
+	return data
+}
+
+// serializeTablesMetadata converts table list to wire format
+func (s *JDBCServer) serializeTablesMetadata(tables []string) []byte {
+	var data []byte
+
+	// Table count
+	tableCount := make([]byte, 4)
+	binary.BigEndian.PutUint32(tableCount, uint32(len(tables)))
+	data = append(data, tableCount...)
+
+	// Table names
+	for _, table := range tables {
+		tableBytes := []byte(table)
+		tableLen := make([]byte, 4)
+		binary.BigEndian.PutUint32(tableLen, uint32(len(tableBytes)))
+		data = append(data, tableLen...)
+		data = append(data, tableBytes...)
+	}
+
+	return data
+}
+
+// serializeDatabasesMetadata converts database list to wire format
+func (s *JDBCServer) serializeDatabasesMetadata(databases []string) []byte {
+	var data []byte
+
+	// Database count
+	dbCount := make([]byte, 4)
+	binary.BigEndian.PutUint32(dbCount, uint32(len(databases)))
+	data = append(data, dbCount...)
+
+	// Database names
+	for _, db := range databases {
+		dbBytes := []byte(db)
+		dbLen := make([]byte, 4)
+		binary.BigEndian.PutUint32(dbLen, uint32(len(dbBytes)))
+		data = append(data, dbLen...)
+		data = append(data, dbBytes...)
+	}
+
+	return data
+}
+
+// valueToString converts a sqltypes.Value to string representation
+func (s *JDBCServer) valueToString(value sqltypes.Value) string {
+	if value.IsNull() {
+		return ""
+	}
+
+	return value.ToString()
+}
+
+// generateConnectionID generates a unique connection ID
+func (s *JDBCServer) generateConnectionID() uint32 {
+	return uint32(time.Now().UnixNano() % 1000000)
+}
+
+// close marks the connection as closed
+func (c *JDBCConnection) close() {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+	c.closed = true
+}
+
+// GetAddress returns the server address
+func (s *JDBCServer) GetAddress() string {
+	return fmt.Sprintf("%s:%d", s.host, s.port)
+}