foundation/eclipselink.core.test/src/it/java/org/eclipse/persistence/testing/tests/isolatedsession/IsolatedOneToManyQueryModificationTest.java

/*
 * Copyright (c) 1998, 2021 Oracle and/or its affiliates. All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v. 2.0 which is available at
 * http://www.eclipse.org/legal/epl-2.0,
 * or the Eclipse Distribution License v. 1.0 which is available at
 * http://www.eclipse.org/org/documents/edl-v10.php.
 *
 * SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
 */

// Contributors:
//     dminsky - initial API and implementation
package org.eclipse.persistence.testing.tests.isolatedsession;

import org.eclipse.persistence.sessions.UnitOfWork;
import org.eclipse.persistence.testing.framework.TestCase;

/**
 * EL Bug 426500 - Modifying a mapping's selectionCriteria in afterLoad can result in uninitialized DatabaseField instances
 * @author dminsky
 */
public class IsolatedOneToManyQueryModificationTest extends TestCase {

    public IsolatedOneToManyQueryModificationTest() {
        super();
        setDescription("IsolatedOneToManyQueryModificationTest");
    }

    @Override
    public void test() {
        IsolatedParent exampleParent = IsolatedParent.buildIsolatedParentExample2();

        for (int i = 0; i < 100; i++) {
            UnitOfWork uow = getSession().acquireUnitOfWork();
            exampleParent = (IsolatedParent)uow.readObject(exampleParent);

            IsolatedParent result = (IsolatedParent) uow.executeQuery("findParentBySerial", IsolatedParent.class, exampleParent.getSerial());

            assertNotNull("Parent should not be null", result);
            assertNotNull("Parent should not have a null collection", result.getChildren());

            assertEquals("Parent should be the same id", exampleParent.getId(), result.getId());
            assertEquals("Parent should be the same serial", exampleParent.getSerial(), result.getSerial());

            assertEquals("Parent should not have a zero length collection", exampleParent.getChildren().size(), result.getChildren().size());

            IsolatedChild child = result.getChildren().get(0);
            IsolatedChild exampleChild = exampleParent.getChildren().get(0);

            assertNotNull("Only child should not be null", child);
            assertEquals("Only child should have the same id", exampleChild.getId(), child.getId());
            assertNotNull("Only child should have a valid parent", child.getParent());
            assertEquals("Only child should reference the found parent", result, child.getParent());

            uow.release();
        }
    }

}