TestPStmtPooling.java

/*
 * 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 java.sql.Statement;
import java.sql.SQLException;

import javax.sql.DataSource;

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

import org.apache.commons.pool.KeyedObjectPoolFactory;
import org.apache.commons.pool.ObjectPool;
import org.apache.commons.pool.impl.GenericKeyedObjectPoolFactory;
import org.apache.commons.pool.impl.GenericObjectPool;

/**
 * TestSuite for BasicDataSource with prepared statement pooling enabled
 * 
 * @author Dirk Verbeeck
 * @version $Revision$ $Date$
 */
public class TestPStmtPooling extends TestCase {
    public TestPStmtPooling(String testName) {
        super(testName);
    }

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

    public void testStmtPool() throws Exception {
        new TesterDriver();
        ConnectionFactory connFactory = new DriverManagerConnectionFactory(
                "jdbc:apache:commons:testdriver","u1","p1");

        ObjectPool connPool = new GenericObjectPool();
        KeyedObjectPoolFactory stmtPoolFactory = new GenericKeyedObjectPoolFactory(null);

        new PoolableConnectionFactory(connFactory, connPool, stmtPoolFactory,
                null, false, true);

        DataSource ds = new PoolingDataSource(connPool);

        Connection conn = ds.getConnection();
        Statement stmt1 = conn.prepareStatement("select 1 from dual");
        Statement ustmt1 = ((DelegatingStatement) stmt1).getInnermostDelegate();
        stmt1.close();
        Statement stmt2 = conn.prepareStatement("select 1 from dual");
        Statement ustmt2 = ((DelegatingStatement) stmt2).getInnermostDelegate();
        stmt2.close();
        assertSame(ustmt1, ustmt2);
    }
    
    public void testCallableStatementPooling() throws Exception {
        new TesterDriver();
        ConnectionFactory connFactory = new DriverManagerConnectionFactory(
                "jdbc:apache:commons:testdriver","u1","p1");

        ObjectPool connPool = new GenericObjectPool();
        KeyedObjectPoolFactory stmtPoolFactory = new GenericKeyedObjectPoolFactory(null);

        new PoolableConnectionFactory(connFactory, connPool, stmtPoolFactory,
                null, false, true);

        DataSource ds = new PoolingDataSource(connPool);

        Connection conn = ds.getConnection();
        Statement stmt1 = conn.prepareStatement("select 1 from dual");
        Statement ustmt1 = ((DelegatingStatement) stmt1).getInnermostDelegate();
        Statement cstmt1 = conn.prepareCall("{call home}");
        Statement ucstmt1 = ((DelegatingStatement) cstmt1).getInnermostDelegate();
        stmt1.close();  // Return to pool
        cstmt1.close(); // ""
        Statement stmt2 = conn.prepareStatement("select 1 from dual"); // Check out from pool
        Statement ustmt2 = ((DelegatingStatement) stmt2).getInnermostDelegate();
        Statement cstmt2 = conn.prepareCall("{call home}");
        Statement ucstmt2 = ((DelegatingStatement) cstmt2).getInnermostDelegate();
        stmt2.close();  // Return to pool
        cstmt2.close(); // ""
        assertSame(ustmt1, ustmt2);
        assertSame(ucstmt1, ucstmt2);
        // Verify key distinguishes Callable from Prepared Statements in the pool
        Statement stmt3 = conn.prepareCall("select 1 from dual");
        Statement ustmt3 = ((DelegatingStatement) stmt3).getInnermostDelegate();
        stmt3.close();
        assertNotSame(ustmt1, ustmt3);
        assertNotSame(ustmt3, ucstmt1);
    }
    
    public void testClosePool() throws Exception {
        new TesterDriver();
        ConnectionFactory connFactory = new DriverManagerConnectionFactory(
                "jdbc:apache:commons:testdriver","u1","p1");

        ObjectPool connPool = new GenericObjectPool();
        KeyedObjectPoolFactory stmtPoolFactory = new GenericKeyedObjectPoolFactory(null);

        new PoolableConnectionFactory(connFactory, connPool, stmtPoolFactory,
                null, false, true);

        DataSource ds = new PoolingDataSource(connPool);
        ((PoolingDataSource) ds).setAccessToUnderlyingConnectionAllowed(true);

        Connection conn = ds.getConnection();
        conn.prepareStatement("select 1 from dual");
        
        Connection poolableConnection = ((DelegatingConnection) conn).getDelegate();
        Connection poolingConnection = 
            ((DelegatingConnection) poolableConnection).getDelegate();
        poolingConnection.close();
        try {
            conn.prepareStatement("select 1 from dual");
            fail("Expecting SQLException");
        } catch (SQLException ex) {
            assertTrue(ex.getMessage().endsWith("invalid PoolingConnection."));
        }     
    }
}