org.camunda.bpm.engine.impl.bpmn.behavior.CompensationEventActivityBehavior Maven / Gradle / Ivy
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* ownership. Camunda licenses this file to you under the Apache License,
* Version 2.0; you may not use this file except in compliance with the License.
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*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
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package org.camunda.bpm.engine.impl.bpmn.behavior;
import java.util.List;
import org.camunda.bpm.engine.impl.bpmn.helper.CompensationUtil;
import org.camunda.bpm.engine.impl.bpmn.parser.CompensateEventDefinition;
import org.camunda.bpm.engine.impl.persistence.entity.EventSubscriptionEntity;
import org.camunda.bpm.engine.impl.persistence.entity.ExecutionEntity;
import org.camunda.bpm.engine.impl.pvm.delegate.ActivityExecution;
import org.camunda.bpm.engine.impl.pvm.runtime.PvmExecutionImpl;
/**
* Behavior for a compensation end event.
*
* @see IntermediateThrowCompensationEventActivityBehavior
*
* @author Philipp Ossler
*
*/
public class CompensationEventActivityBehavior extends FlowNodeActivityBehavior {
protected final CompensateEventDefinition compensateEventDefinition;
public CompensationEventActivityBehavior(CompensateEventDefinition compensateEventDefinition) {
this.compensateEventDefinition = compensateEventDefinition;
}
@Override
public void execute(ActivityExecution execution) throws Exception {
final List eventSubscriptions = collectEventSubscriptions(execution);
if (eventSubscriptions.isEmpty()) {
leave(execution);
} else {
// async (waitForCompletion=false in bpmn) is not supported
CompensationUtil.throwCompensationEvent(eventSubscriptions, execution, false);
}
}
protected List collectEventSubscriptions(ActivityExecution execution) {
final String activityRef = compensateEventDefinition.getActivityRef();
if (activityRef != null) {
return CompensationUtil.collectCompensateEventSubscriptionsForActivity(execution, activityRef);
} else {
return CompensationUtil.collectCompensateEventSubscriptionsForScope(execution);
}
}
@Override
public void signal(ActivityExecution execution, String signalName, Object signalData) throws Exception {
// join compensating executions -
// only wait for non-event-scope executions cause a compensation event subprocess consume the compensation event and
// do not have to compensate embedded subprocesses (which are still non-event-scope executions)
if (((PvmExecutionImpl) execution).getNonEventScopeExecutions().isEmpty()) {
leave(execution);
} else {
((ExecutionEntity) execution).forceUpdate();
}
}
}