| /* |
| * 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.generationtype; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.apache.openjpa.jdbc.kernel.TableJDBCSeq; |
| import org.apache.openjpa.kernel.StoreContext; |
| import org.apache.openjpa.meta.ClassMetaData; |
| import org.apache.openjpa.meta.MetaDataRepository; |
| import org.apache.openjpa.meta.SequenceMetaData; |
| import org.apache.openjpa.persistence.EntityManagerImpl; |
| import org.apache.openjpa.persistence.OpenJPAEntityManagerFactorySPI; |
| import org.apache.openjpa.persistence.test.SingleEMFTestCase; |
| |
| public class TestTableGeneratorMultithreaded extends SingleEMFTestCase { |
| public final int ALLOC_SIZE = 100000; |
| public final int INITIAL = 1; |
| public final int LOOPS = 100000; |
| public final int THREADS = 5; |
| |
| @Override |
| public void setUp() { |
| setUp(Dog.class, CLEAR_TABLES |
| // , "openjpa.Log", "SQL=trace", "openjpa.ConnectionFactoryProperties","PrintParameters=true" |
| ); |
| ClassLoader loader = Thread.currentThread().getContextClassLoader(); |
| MetaDataRepository repo = emf.getConfiguration().getMetaDataRepositoryInstance(); |
| // Initialize MetaData |
| repo.getMetaData(Dog.class, loader, true); |
| repo.getSequenceMetaData("Dog_Gen", loader, true); |
| |
| } |
| |
| @Override |
| public void tearDown() throws Exception { |
| super.tearDown(); |
| } |
| |
| public void testAllIdsAreUsed() throws Exception { |
| List<WorkerThread> threads = new ArrayList<>(); |
| for (int i = 0; i < THREADS; i++) { |
| threads.add(new WorkerThread(emf)); |
| } |
| for (Thread t : threads) { |
| t.start(); |
| } |
| long max = 0; |
| for (WorkerThread w : threads) { |
| w.join(); |
| max = Math.max(max, (Long) w.getLast()); |
| } |
| assertEquals((LOOPS * (THREADS)), max); |
| } |
| |
| class WorkerThread extends Thread { |
| Object _first = null, _last = null; |
| int _count = 0; |
| StoreContext _ctx; |
| TableJDBCSeq _seq; |
| ClassMetaData _cmd; |
| EntityManagerImpl _em; |
| MetaDataRepository _repo; |
| |
| public WorkerThread(OpenJPAEntityManagerFactorySPI emf) { |
| _repo = emf.getConfiguration().getMetaDataRepositoryInstance(); |
| } |
| |
| @Override |
| public void run() { |
| ClassLoader contextLoader = Thread.currentThread().getContextClassLoader(); |
| SequenceMetaData meta = _repo.getSequenceMetaData("Dog_Gen", contextLoader, true); |
| meta.setInitialValue(1); |
| meta.setIncrement(10000); |
| _em = (EntityManagerImpl) emf.createEntityManager(); |
| _ctx = (StoreContext) _em.getBroker(); |
| _cmd = _repo.getMetaData(Dog.class, contextLoader, true); |
| |
| _seq = (TableJDBCSeq) meta.getInstance(contextLoader); |
| // Change defaults so this test doesn't take so long to run. |
| _seq.setAllocate(ALLOC_SIZE); |
| _seq.setInitialValue(1); |
| |
| Object obj = _seq.next(_ctx, _cmd); |
| _first = obj; |
| // start at 1 because we already got our first result. |
| for (int i = 1; i < LOOPS; i++) { |
| obj = _seq.next(_ctx, _cmd); |
| } |
| _last = obj; |
| _em.close(); |
| } |
| |
| public Object getLast() { |
| return _last; |
| } |
| |
| public Object getFirst() { |
| return _first; |
| } |
| |
| public int getCount() { |
| return _count; |
| } |
| }// end WorkerThread |
| } |