一.编程启动数据库

package com.alibaba.hsql.hsqldemo;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.SQLException;

import java.sql.Statement;

import com.alibaba.hsql.hsqldemo.util.DbPropertyUtil;

public class DbManager {

static {

String driver = DbPropertyUtil.getDrvier();

try {

Class.forName(driver);

} catch (ClassNotFoundException e) {

e.printStackTrace();

}

}

/**

* 关闭数据库

*/

public static void stopDb() {

final String dbalias = DbPropertyUtil.getDbName();

final String urlPrefix = DbPropertyUtil.getUrlPrefix();

final String url = urlPrefix + dbalias;

final String username = DbPropertyUtil.getUsername();

final String password = DbPropertyUtil.getPassword();

Connection conn = null;

Statement stmt = null;

try {

try {

conn = DriverManager.getConnection(url, username, password);

stmt = conn.createStatement();

stmt.execute("SHUTDOWN");

} finally {

if (null != stmt)

stmt.close();

if (null != conn)

conn.close();

}

} catch (SQLException e) {

e.printStackTrace();

}

}

/**

* 启动数据库

*/

public static void startDb(boolean dropOldTable) {

startServer();

createTable(dropOldTable);

}

private static void createTable(final boolean dropOldTable) {

//创建表

final String dbalias = DbPropertyUtil.getDbName();

final String urlPrefix = DbPropertyUtil.getUrlPrefix();

final String url = urlPrefix + dbalias;

final String username = DbPropertyUtil.getUsername();

final String password = DbPropertyUtil.getPassword();

final String tableName = DbPropertyUtil.getTableName();

Connection conn = null;

ResultSet rs = null;

String sql = DbPropertyUtil.getSql();

Statement stmt = null;

try {

try {

conn = DriverManager.getConnection(url, username, password);

rs = conn.getMetaData().getTables(null, null, tableName.toUpperCase(), null);

if (!rs.next()) {//不存在

stmt = conn.createStatement();

stmt.execute(sql);

}else{//存在

if(dropOldTable){

stmt = conn.createStatement();

stmt.execute("drop table  " + tableName);

stmt.execute(sql);

}

}

} finally {

if (null != rs)

rs.close();

if (null != stmt)

stmt.close();

if (null != conn)

conn.close();

}

} catch (SQLException e) {

e.printStackTrace();

}

}

/**

* 启动数据库服务器

*/

private static void startServer() {

final String database = "-database.0";

final String path = System.getProperty("user.home");

if (null == path) {

throw new RuntimeException("user home directory should not null");

}

final String fileName = path + DbPropertyUtil.getDbPath();

final String dbname = "-dbname.0";

final String dbalias = DbPropertyUtil.getDbName();

org.hsqldb.Server.main(new String[] { database, fileName, dbname, dbalias });

}

}

二.hsqldb相关知识:

1.支持Indentity主键；

2.支持分页：SELECT TOP 5 FROM .. ,    SELECT LIMIT 0 10 FROM ...;

3.支持JDBC 2.0