/**
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* Copyright (C) 2007 Bull S. A. S.
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* Bull, Rue Jean Jaures, B.P.68, 78340, Les Clayes-sous-Bois
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* This library is free software; you can redistribute it and/or modify it under the terms
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* of the GNU Lesser General Public License as published by the Free Software Foundation
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* version 2.1 of the License.
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* This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
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* without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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* See the GNU Lesser General Public License for more details.
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* You should have received a copy of the GNU Lesser General Public License along with this
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* program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
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* Floor, Boston, MA 02110-1301, USA.
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**/
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package org.jbpm.pvm.internal.wire.descriptor;
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import org.jbpm.api.JbpmException;
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import org.jbpm.internal.log.Log;
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import org.jbpm.pvm.internal.jobexecutor.JobExecutor;
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import org.jbpm.pvm.internal.util.Listener;
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import org.jbpm.pvm.internal.wire.WireContext;
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/**
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* @author Pascal Verdage
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*
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* Descriptor for the JobExecutor.
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* If it is automatically started, a listener is created to stop it when
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* the environementFactory is closed
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* @see org.jbpm.pvm.internal.env.EnvironmentFactory
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* @see org.jbpm.pvm.internal.wire.binding.JobExecutorBinding
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*/
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public class JobExecutorDescriptor extends ObjectDescriptor {
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private static final long serialVersionUID = 1L;
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private static final Log log = Log.getLog(JobExecutorDescriptor.class.getName());
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private boolean autoStart = false;
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public JobExecutorDescriptor() {
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super(JobExecutor.class.getName());
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}
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public Object construct(WireContext wireContext) {
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JobExecutor jobExecutor = (JobExecutor) super.construct(wireContext);
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if (autoStart) {
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wireContext.addListener(new JobExecutorStopper(jobExecutor));
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}
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return jobExecutor;
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}
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public void setAutoStart(boolean autoStart) {
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this.autoStart = autoStart;
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}
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public static class JobExecutorStopper implements Listener {
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JobExecutor jobExecutor;
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public JobExecutorStopper(JobExecutor jobExecutor) {
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this.jobExecutor = jobExecutor;
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}
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public void event(Object source, String eventName, Object info) {
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if (WireContext.EVENT_CLOSE.equals(eventName)) {
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log.trace("stopping jobExecutor");
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// wait to prevent from calling stop before the run method (activation)
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// has been called (after a system context switching)
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//TODO: do not wait
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try {
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Thread.sleep(200);
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} catch (InterruptedException e) {
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e.printStackTrace();
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throw new JbpmException("exception while stopping JobExecutor");
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}
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jobExecutor.stop(true);
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}
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}
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}
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}
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