| /* |
| * 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.openjpa.persistence.recursive; |
| |
| import javax.persistence.EntityManager; |
| |
| import org.apache.openjpa.persistence.test.SingleEMFTestCase; |
| |
| public class TestRecursiveRelationships extends SingleEMFTestCase { |
| private int _l1Nodes = 3; |
| private int _l2Nodes = 3; |
| |
| public void setUp() { |
| setUp(Node.class); |
| } |
| |
| public void testRecursiveNodes() { |
| EntityManager em = emf.createEntityManager(); |
| |
| // set up initial tree |
| em.getTransaction().begin(); |
| Node root = new Node(); |
| for (int i = 0; i < _l1Nodes; i++) { |
| Node n1 = new Node(); |
| root.getNodes().add(n1); |
| em.persist(n1); |
| } |
| em.persist(root); |
| em.getTransaction().commit(); |
| |
| // clear PC |
| em.refresh(root); |
| int rootId = root.getId(); |
| em.clear(); |
| em.close(); |
| em = emf.createEntityManager(); |
| |
| // add new nodes |
| em.getTransaction().begin(); |
| root = em.getReference(Node.class, rootId); |
| assertNotNull(root); |
| assertNotNull(root.getNodes()); |
| for (Node n : root.getNodes()) { |
| for (int j = 0; j < _l2Nodes; j++) { |
| Node n2 = new Node(); |
| n.getNodes().add(n.getNodes().size(), n2); |
| em.persist(n2); |
| } |
| } |
| em.getTransaction().commit(); |
| em.clear(); |
| em.close(); |
| em = emf.createEntityManager(); |
| |
| // ensure count is correct. |
| root = em.getReference(Node.class, rootId); |
| assertNotNull(root); |
| assertNotNull(root.getNodes()); |
| assertEquals(_l1Nodes, root.getNodes().size()); |
| for (Node n : root.getNodes()) { |
| assertEquals(_l2Nodes, n.getNodes().size()); |
| } |
| em.close(); |
| } |
| } |