| /* |
| * Copyright 2005 The Apache Software Foundation. |
| * |
| * Licensed 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.jdo.tck.query; |
| |
| import java.util.Collection; |
| import java.util.Iterator; |
| import java.util.Map; |
| import java.util.Set; |
| |
| import javax.jdo.PersistenceManager; |
| import javax.jdo.Query; |
| import javax.jdo.Transaction; |
| |
| import org.apache.jdo.tck.pc.mylib.PCPoint; |
| import org.apache.jdo.tck.util.BatchTestRunner; |
| import org.apache.jdo.tck.util.ThreadExceptionHandler; |
| |
| /** |
| *<B>Title:</B> Executing Multiple Queries Simultaneously is ThreadSafe |
| *<BR> |
| *<B>Keywords:</B> query concurrency |
| *<BR> |
| *<B>Assertion ID:</B> A14.3-2. |
| *<BR> |
| *<B>Assertion Description: </B> |
| Multiple queries might be executed simultaneously by different threads |
| (but the implementation might choose to execute them serially). |
| In either case, the execution must be thread safe. |
| |
| */ |
| |
| public class ExecutingMultipleQueriesSimultaneouslyIsThreadSafe |
| extends MultipleActiveQueryInstanceInSamePersistenceManager { |
| |
| static int nrOfThreads = 20; |
| |
| /** */ |
| private static final String ASSERTION_FAILED = |
| "Assertion A14.3-2 (ExecutingMultipleQueriesSimultaneouslyIsThreadSafe) failed: "; |
| |
| /** |
| * The <code>main</code> is called when the class |
| * is directly executed from the command line. |
| * @param args The arguments passed to the program. |
| */ |
| public static void main(String[] args) { |
| BatchTestRunner.run(ExecutingMultipleQueriesSimultaneouslyIsThreadSafe.class); |
| } |
| |
| /** */ |
| public void test() { |
| pm = getPM(); |
| |
| if (debug) logger.debug("\ninitDatabase"); |
| initDatabase(pm, PCPoint.class); |
| executeMultipleQueries(pm); |
| |
| pm.close(); |
| pm = null; |
| } |
| |
| /** */ |
| void executeMultipleQueries(PersistenceManager pm) { |
| Transaction tx = pm.currentTransaction(); |
| try { |
| tx.begin(); |
| |
| if (debug) |
| logger.debug(getThreadName() + ": Starting " + |
| nrOfThreads + " concurrent threads."); |
| ThreadExceptionHandler group = new ThreadExceptionHandler(); |
| Thread[] threads = new Thread[nrOfThreads]; |
| for (int i = 0; i < nrOfThreads; i++) { |
| // Runnable r = new QueryExecuter(pm); |
| Runnable r = |
| new ExecutingMultipleQueriesSimultaneouslyIsThreadSafe(). |
| getQueryExecuter(pm); |
| Thread t = new Thread(group, r); |
| t.setName("ThreadID-" + i); |
| threads[i] = t; |
| if (debug) logger.debug(getThreadName() + ": Running"); |
| t.start(); |
| } |
| |
| if (debug) |
| logger.debug(getThreadName() + |
| ": Waiting for threads to join..."); |
| for (int i = 0; i < nrOfThreads; i++) { |
| try { threads[i].join(); } |
| catch (InterruptedException e) { } |
| } |
| if (debug) logger.debug(getThreadName() + ": All threads joined."); |
| |
| tx.commit(); |
| tx = null; |
| |
| // check unhandled exceptions |
| Set uncaught = group.getAllUncaughtExceptions(); |
| if ((uncaught != null) && !uncaught.isEmpty()) { |
| for (Iterator i = uncaught.iterator(); i.hasNext();) { |
| Map.Entry next = (Map.Entry)i.next(); |
| Thread thread = (Thread)next.getKey(); |
| Throwable problem = (Throwable)next.getValue(); |
| if (debug) { |
| logger.debug("uncaught exception in thread " + thread + |
| " stacktrace:"); |
| problem.printStackTrace(); |
| } |
| fail(ASSERTION_FAILED, |
| "Thread " + thread + ": uncaught exception " + problem); |
| } |
| } |
| } |
| finally { |
| if ((tx != null) && tx.isActive()) |
| tx.rollback(); |
| } |
| } |
| |
| /** */ |
| String getThreadName() { |
| return "[" + Thread.currentThread().getName() + "]"; |
| } |
| |
| /** Will be removed. */ |
| Runnable getQueryExecuter(PersistenceManager pm) { |
| return new QueryExecuter(pm); |
| } |
| |
| /** Will be removed. */ |
| void executeQueries(PersistenceManager ignore) { |
| pm = getPM(); |
| setInsertedObjects(pm); |
| super.executeQueries(pm); |
| pm.close(); |
| pm = null; |
| } |
| |
| /** Will be removed. */ |
| void setInsertedObjects(PersistenceManager pm) { |
| Transaction tx = pm.currentTransaction(); |
| try { |
| tx.begin(); |
| Query query = pm.newQuery(); |
| query.setClass(PCPoint.class); |
| query.setCandidates(pm.getExtent(PCPoint.class, false)); |
| Object results = query.execute(); |
| for (Iterator i=((Collection)results).iterator(); i.hasNext();) { |
| inserted.add(i.next()); |
| } |
| tx.commit(); |
| tx = null; |
| } |
| finally { |
| if ((tx != null) && tx.isActive()) |
| tx.rollback(); |
| } |
| } |
| |
| /** */ |
| class QueryExecuter implements Runnable { |
| |
| final PersistenceManager pm; |
| |
| /** */ |
| public QueryExecuter(PersistenceManager pm) { |
| this.pm = pm; |
| } |
| |
| /** */ |
| public void run() { |
| ExecutingMultipleQueriesSimultaneouslyIsThreadSafe.this.executeQueries(pm); |
| } |
| } |
| } |