Commons DBCP example source code file (TestDelegatingStatement.java)

This example Commons DBCP source code file (TestDelegatingStatement.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, delegatingconnection, delegatingstatement, delegatingstatement, exception, exception, jdbc, sql, sqlexception, sqlexception, statement, testcase, testdelegatingstatement, testdelegatingstatement, testerconnection, testerpreparedstatement

The Commons DBCP TestDelegatingStatement.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 java.sql.SQLException;
import java.sql.Statement;

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

/**
 * @author Rodney Waldhoff
 * @author Dirk Verbeeck
 * @version $Revision: 895724 $ $Date: 2010-01-04 12:48:34 -0500 (Mon, 04 Jan 2010) $
 */
public class TestDelegatingStatement extends TestCase {
    public TestDelegatingStatement(String testName) {
        super(testName);
    }

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

    private DelegatingConnection conn = null;
    private Connection delegateConn = null;
    private DelegatingStatement stmt = null;
    private Statement delegateStmt = null;

    public void setUp() throws Exception {
        delegateConn = new TesterConnection("test", "test");
        delegateStmt = new TesterStatement(delegateConn);
        conn = new DelegatingConnection(delegateConn);
        stmt = new DelegatingStatement(conn,delegateStmt);
    }

    public void testExecuteQueryReturnsNull() throws Exception {
        assertNull(stmt.executeQuery("null"));
    }

    public void testGetDelegate() throws Exception {
        assertEquals(delegateStmt,stmt.getDelegate());
    }

    public void testHashCode() {
        delegateStmt = new TesterPreparedStatement(delegateConn,"select * from foo");
        DelegatingStatement stmt1 = new DelegatingStatement(conn,delegateStmt);
        DelegatingStatement stmt2 = new DelegatingStatement(conn,delegateStmt);
        assertEquals(stmt1.hashCode(), stmt2.hashCode());
    }
    
    public void testEquals() {
        delegateStmt = new TesterPreparedStatement(delegateConn,"select * from foo");
        DelegatingStatement stmt1 = new DelegatingStatement(conn, delegateStmt);
        DelegatingStatement stmt2 = new DelegatingStatement(conn, delegateStmt);
        DelegatingStatement stmt3 = new DelegatingStatement(conn, null);
        
        assertTrue(!stmt1.equals(null));
        assertTrue(stmt1.equals(stmt2));
        assertTrue(!stmt1.equals(stmt3));
    }
    
    public void testCheckOpen() throws Exception {
        stmt.checkOpen();
        stmt.close();
        try {
            stmt.checkOpen();
            fail("Expecting SQLException");
        } catch (SQLException ex) {
            // expected
        }      
    }
}