Java tutorial
/** * Copyright (c) 1999, 2014 Claresco Corporation, Berkeley, California. All rights reserved. * * * ConnectionPooling.java May 20, 2014 * * Copyright 2014 Claresco Corporation, Berkeley, CA 94704. All Rights Reserved. * * This software is the proprietary information of Claresco Corporation. * Use is subject to license terms. * * Author : Rheza * */ package com.claresco.tinman.servlet; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.util.Properties; import org.apache.commons.dbcp.ConnectionFactory; import org.apache.commons.dbcp.DriverManagerConnectionFactory; import org.apache.commons.dbcp.PoolableConnection; import org.apache.commons.dbcp.PoolableConnectionFactory; import org.apache.commons.dbcp.PoolingDriver; import org.apache.commons.pool.ObjectPool; import org.apache.commons.pool.impl.GenericObjectPool; /** * ConnectionPooling * @author Rheza * * Description: * Copied from apache commons website * * Status: * * */ public class ConnectionPooling { private String myPoolName = "example"; private static final String myPoolingDriverName = "jdbc:apache:commons:dbcp:"; /** * Constructor * * Params: * * */ public ConnectionPooling(String connectionURL, String userName, String password, String driverName) throws ClassNotFoundException, SQLException { Class.forName(driverName); Properties props = new Properties(); props.setProperty("user", userName); props.setProperty("password", password); ObjectPool connectionPool = new GenericObjectPool(null); ConnectionFactory connectionFactory = new DriverManagerConnectionFactory(connectionURL, props); PoolableConnectionFactory poolableConnectionFactory = new PoolableConnectionFactory(connectionFactory, connectionPool, null, null, false, true); Class.forName("org.apache.commons.dbcp.PoolingDriver"); PoolingDriver driver = (PoolingDriver) DriverManager.getDriver(myPoolingDriverName); driver.registerPool(myPoolName, connectionPool); } protected Connection getConnection() throws SQLException { return DriverManager.getConnection(myPoolingDriverName + myPoolName); } /** public static void main(String[] args) { try { Class.forName("org.postgresql.Driver"); ConnectionPooling cp = new ConnectionPooling(); Connection conn = DriverManager.getConnection("jdbc:apache:commons:dbcp:example"); String s = "select statementid from statement where statementid = ?;"; PreparedStatement statement = conn.prepareStatement(s); statement.setInt(1, 10881); java.sql.ResultSet rs = statement.executeQuery(); rs.next(); System.out.println(rs.getInt("statementid")); } catch (Exception e) { e.printStackTrace(); } } **/ }