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