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Commons DBCP example source code file (TestDriverManagerConnectionFactory.java)

This example Commons DBCP source code file (TestDriverManagerConnectionFactory.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Commons DBCP tags/keywords

connection, connectionthread, connectionthread, datasource, exception, exception, genericobjectpool, genericobjectpool, jdbc, poolableconnectionfactory, poolingdatasource, sql, testcase, testdrivermanagerconnectionfactory, thread, thread

The Commons DBCP TestDriverManagerConnectionFactory.java source code

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.commons.dbcp;

import java.sql.Connection;

import javax.sql.DataSource;

import org.apache.commons.pool.impl.GenericObjectPool;

import junit.framework.Test;
import junit.framework.TestCase;
import junit.framework.TestSuite;

/**
 * This test *must* execute before all other tests to be effective as it tests
 * the initialisation of DriverManager.
 * Based on the test case for DBCP-212 written by Marcos Sanz
 *
 * @version $Revision: 883848 $ $Date: 2009-11-24 15:15:30 -0500 (Tue, 24 Nov 2009) $
 */
public class TestDriverManagerConnectionFactory extends TestCase {
    
    public TestDriverManagerConnectionFactory(String testName) {
        super(testName);
    }

    public static Test suite() {
        return new TestSuite(TestDriverManagerConnectionFactory.class);
    }

    public void testDriverManagerInit() throws Exception {
        System.setProperty("jdbc.drivers",
                "org.apache.commons.dbcp.TesterDriver");
        GenericObjectPool connectionPool = new GenericObjectPool(null, 10,
                GenericObjectPool.WHEN_EXHAUSTED_BLOCK, -1, 0);
        final ConnectionFactory connectionFactory =
            new DriverManagerConnectionFactory(
                    "jdbc:apache:commons:testdriver",
                    "foo", "bar");
        final PoolableConnectionFactory poolableConnectionFactory =
            new PoolableConnectionFactory(connectionFactory, connectionPool,
                    null, null, false, true);
        connectionPool.setFactory(poolableConnectionFactory);
        PoolingDataSource dataSource =
            new PoolingDataSource(connectionPool);

        ConnectionThread[] connectionThreads = new ConnectionThread[10];
        Thread[] threads = new Thread[10];
        
        for (int i = 0; i < 10; i++) {
            connectionThreads[i] = new ConnectionThread(dataSource);
            threads[i] = new Thread(connectionThreads[i]);
        }
        for (int i = 0; i < 10; i++) {
            threads[i].start();
        }
        for (int i = 0; i < 10; i++) {
            while (threads[i].isAlive()){//JDK1.5: getState() != Thread.State.TERMINATED) {
                Thread.sleep(100);
            }
            if (!connectionThreads[i].getResult()) {
                fail("Exception during getConnection");
            }
        }
    }
    
    private static final class ConnectionThread implements Runnable {
        private DataSource ds;
        private volatile boolean result = true;
        
        private ConnectionThread(DataSource ds) {
            this.ds = ds;
        }

        public void run() {
            Connection conn = null;
            try {
                conn = ds.getConnection();
            } catch (Exception e) {
                e.printStackTrace();
                result = false;
            } finally {
                if (conn != null) {
                    try {
                        conn.close();
                    } catch (Exception e) {
                        e.printStackTrace();                    
                        result = false;
                    }
                }
            }
        }
        
        public boolean getResult() {
            return result;
        }
    }

}

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