/*******************************************************************************
* Copyright (c) 2005, 2015 SAP. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0 and Eclipse Distribution License v. 1.0
* which accompanies this distribution.
* The Eclipse Public License is available at http://www.eclipse.org/legal/epl-v10.html
* and the Eclipse Distribution License is available at
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* Contributors:
* SAP - initial API and implementation
******************************************************************************/
package org.eclipse.persistence.testing.tests.wdf.jpa1.relation;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.EntityManager;
import org.eclipse.persistence.testing.framework.wdf.JPAEnvironment;
import org.eclipse.persistence.testing.framework.wdf.ToBeInvestigated;
import org.eclipse.persistence.testing.models.wdf.jpa1.node.Node;
import org.eclipse.persistence.testing.tests.wdf.jpa1.JPA1Base;
import org.junit.Test;
@SuppressWarnings("unchecked")
public class TestNode extends JPA1Base {
@Test
public void testRoot() {
JPAEnvironment env = getEnvironment();
EntityManager em = env.getEntityManager();
try {
env.beginTransaction(em);
final int rootId = 1;
Node root = new Node(rootId, null);
em.persist(root);
env.commitTransactionAndClear(em);
env.beginTransaction(em);
Node found = em.find(Node.class, new Integer(rootId));
verify(found != null, "no node found");
verify(found.getParent() == null, "parent not null");
verify(found.getChildren().size() == 0, "unexpected children");
env.rollbackTransactionAndClear(em);
} finally {
closeEntityManager(em);
}
}
@Test
public void testTwoGenerations() {
JPAEnvironment env = getEnvironment();
EntityManager em = env.getEntityManager();
try {
env.beginTransaction(em);
final int rootId = 10;
Node root = new Node(rootId, null);
final int child1Id = 11;
Node child1 = new Node(child1Id, root);
Node child2 = new Node(12, root);
em.persist(root);
em.persist(child1);
em.persist(child2);
env.commitTransactionAndClear(em);
env.beginTransaction(em);
Node found = em.find(Node.class, new Integer(rootId));
verify(found != null, "no node found");
verify(found.getParent() == null, "parent not null");
verify(found.getChildren().size() == 2, "unexpected children");
env.rollbackTransactionAndClear(em);
env.beginTransaction(em);
found = em.find(Node.class, new Integer(child1Id));
verify(found != null, "no node found");
Node parent = found.getParent();
verify(em.contains(parent), "parent not contained in em");
verify(parent != null, "parent is null");
verify(parent.getId() == rootId, "parent has not root id");
verify(parent.getChildren().size() == 2, "unexpected children");
env.rollbackTransactionAndClear(em);
} finally {
closeEntityManager(em);
}
}
@Test
@ToBeInvestigated
public void testChangeParent() {
JPAEnvironment env = getEnvironment();
EntityManager em = env.getEntityManager();
try {
// seed the data model
env.beginTransaction(em);
final int root1Id = 20;
final int root2Id = 21;
final int childId = 22;
Node root1 = new Node(root1Id, null);
Node root2 = new Node(root2Id, null);
Node child = new Node(childId, root1);
em.persist(root1);
em.persist(root2);
em.persist(child);
env.commitTransactionAndClear(em);
// change the parent
env.beginTransaction(em);
child = em.find(Node.class, new Integer(childId));
Node parent = child.getParent();
root2 = em.find(Node.class, new Integer(root2Id));
Set<Node> children = parent.getChildren();
parent.setChildren(null);
child.setParent(root2);
root2.setChildren(children);
env.commitTransactionAndClear(em);
verify(!parent.postUpdateWasCalled(), "root1 was updated but it is not the owning side of the relationship");
verify(!root2.postUpdateWasCalled(), "root2 was updated but it is not the owning side of the relationship");
verify(child.postUpdateWasCalled(), "child was not updated but it is the owning side of the relationship");
// check the relationship
env.beginTransaction(em);
child = em.find(Node.class, new Integer(childId));
verify(child != null, "child is null");
parent = child.getParent();
verify(parent != null, "parent is null");
root2 = em.find(Node.class, new Integer(root2Id));
verify(root2 == parent, "root2 != parent");
verify(children != null, "children is null");
children = root2.getChildren();
verify(children.contains(child), "child not contained in set of children");
root1 = em.find(Node.class, new Integer(root1Id));
Set children1 = root1.getChildren();
verify(children1 == null || children1.isEmpty(), "children of root1 not null or empty");
env.rollbackTransactionAndClear(em);
} finally {
closeEntityManager(em);
}
}
@Test
public void testCircle() {
// in this tree, the root is defined by this.parent = this;
JPAEnvironment env = getEnvironment();
EntityManager em = env.getEntityManager();
try {
env.beginTransaction(em);
final int rootId = 30;
Node root = new Node(rootId, null);
root.setParent(root);
Set<Node> children = new HashSet<Node>();
children.add(root);
root.setChildren(children);
em.persist(root);
env.commitTransactionAndClear(em);
env.beginTransaction(em);
Node found = em.find(Node.class, new Integer(rootId));
verify(found != null, "no node found");
verify(found.getParent() == found, "parent != root");
verify(found.getChildren().size() == 1, "unexpected children");
env.rollbackTransactionAndClear(em);
} finally {
closeEntityManager(em);
}
}
}