/*
* JBoss, Home of Professional Open Source
* Copyright 2005, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This 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; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jbpm.pvm.internal.model.op;
import java.util.HashMap;
import java.util.Map;
import org.jbpm.api.cmd.Environment;
import org.jbpm.pvm.internal.job.MessageImpl;
import org.jbpm.pvm.internal.model.ActivityImpl;
import org.jbpm.pvm.internal.model.EventImpl;
import org.jbpm.pvm.internal.model.ExecutionImpl;
import org.jbpm.pvm.internal.model.ObservableElementImpl;
import org.jbpm.pvm.internal.model.ProcessDefinitionImpl;
import org.jbpm.pvm.internal.model.TransitionImpl;
import org.jbpm.pvm.internal.session.DbSession;
/**
* @author Tom Baeyens
*/
public class ExecuteEventListenerMessage extends MessageImpl<Object> {
private static final String KEY_EVENT_COMPLETED_OPERATION = "ECO";
private static final String KEY_EVENT_LISTENER_INDEX = "ELI";
private static final String KEY_EVENT_NAME = "EN";
private static final String KEY_EVENT_OBSERVABLE_PARENT_LEVEL = "EOPL";
private static final String KEY_TRANSITION_SOURCE_INDEX = "TSI";
private static final String KEY_TRANSITION_SOURCE = "TS";
private static final String KEY_EVENT_SOURCE_TRANSITION = "EST";
private static final String KEY_EVENT_SOURCE_ACTIVITY = "ESA";
private static final String KEY_EVENT_SOURCE_PROCESS_DEFINITION = "ESPD";
private static final String KEY_STATE = "S";
private static final long serialVersionUID = 1L;
public ExecuteEventListenerMessage() {
}
public ExecuteEventListenerMessage(ExecutionImpl execution) {
super(execution);
Map<String, Object> asyncExecutionInfo = new HashMap<String, Object>();
TransitionImpl transition = execution.getTransition();
if (transition!=null) {
ActivityImpl source = transition.getSource();
asyncExecutionInfo.put(KEY_TRANSITION_SOURCE, source.getName());
asyncExecutionInfo.put(KEY_TRANSITION_SOURCE_INDEX, source.getOutgoingTransitions().indexOf(transition));
}
asyncExecutionInfo.put(KEY_STATE, execution.getState());
ObservableElementImpl eventSource = (ObservableElementImpl) execution.getEventSource();
if (eventSource instanceof ProcessDefinitionImpl) {
asyncExecutionInfo.put(KEY_EVENT_SOURCE_PROCESS_DEFINITION, null);
} else if (eventSource instanceof ActivityImpl) {
asyncExecutionInfo.put(KEY_EVENT_SOURCE_ACTIVITY, eventSource.getName());
} else if (eventSource instanceof TransitionImpl) {
asyncExecutionInfo.put(KEY_EVENT_SOURCE_TRANSITION, null);
}
EventImpl event = execution.getEvent();
asyncExecutionInfo.put(KEY_EVENT_OBSERVABLE_PARENT_LEVEL, getEventObservableParentLevel(eventSource, event.getObservableElement()));
asyncExecutionInfo.put(KEY_EVENT_NAME, event.getName());
asyncExecutionInfo.put(KEY_EVENT_LISTENER_INDEX, execution.getEventListenerIndex());
AtomicOperation eventCompletedOperation = execution.getEventCompletedOperation();
String eventCompletedOperationText = null;
if (eventCompletedOperation!=null) {
eventCompletedOperationText = eventCompletedOperation.toString();
}
asyncExecutionInfo.put(KEY_EVENT_COMPLETED_OPERATION, eventCompletedOperationText);
setConfiguration(asyncExecutionInfo);
}
public Integer getEventObservableParentLevel(ObservableElementImpl eventSource, ObservableElementImpl observableElement) {
int parentLevel = 0;
while (eventSource!=observableElement) {
parentLevel++;
eventSource = eventSource.getParent();
}
return parentLevel;
}
public Object execute(Environment environment) throws Exception {
Map<String, Object> asyncExecutionInfo = (Map) getConfiguration();
String transitionSourceName = (String) asyncExecutionInfo.get(KEY_TRANSITION_SOURCE);
TransitionImpl transition = null;
if (transitionSourceName!=null) {
ProcessDefinitionImpl processDefinition = execution.getProcessDefinition();
ActivityImpl transitionSource = processDefinition.findActivity(transitionSourceName);
Integer transitionIndex = (Integer) asyncExecutionInfo.get(KEY_TRANSITION_SOURCE_INDEX);
transition = (TransitionImpl) transitionSource.getOutgoingTransitions().get(transitionIndex);
execution.setTransition(transition);
}
if (asyncExecutionInfo.containsKey(KEY_EVENT_SOURCE_PROCESS_DEFINITION)){
ProcessDefinitionImpl processDefinition = execution.getProcessDefinition();
execution.setEventSource(processDefinition);
} else if (asyncExecutionInfo.containsKey(KEY_EVENT_SOURCE_ACTIVITY)){
ProcessDefinitionImpl processDefinition = execution.getProcessDefinition();
String activityName = (String) asyncExecutionInfo.get(KEY_EVENT_SOURCE_ACTIVITY);
ActivityImpl activity = processDefinition.findActivity(activityName);
execution.setEventSource(activity);
} else if (asyncExecutionInfo.containsKey(KEY_EVENT_SOURCE_TRANSITION)){
execution.setEventSource(transition);
}
ObservableElementImpl observableElement = (ObservableElementImpl) execution.getEventSource();
int parentLevel = (Integer) asyncExecutionInfo.get(KEY_EVENT_OBSERVABLE_PARENT_LEVEL);
for (int i=0; i<parentLevel; parentLevel++) {
observableElement = observableElement.getParent();
}
String eventName = (String) asyncExecutionInfo.get(KEY_EVENT_NAME);
EventImpl event = observableElement.getEvent(eventName);
execution.setEvent(event);
Integer eventListenerIndex = (Integer) asyncExecutionInfo.get(KEY_EVENT_LISTENER_INDEX);
execution.setEventListenerIndex(eventListenerIndex);
String eventCompletedOperationText = (String) asyncExecutionInfo.get(KEY_EVENT_COMPLETED_OPERATION);
AtomicOperation eventCompletedOperation = AtomicOperation.parseAtomicOperation(eventCompletedOperationText);
execution.setEventCompletedOperation(eventCompletedOperation);
execution.setState((String) asyncExecutionInfo.get(KEY_STATE));
execution.performAtomicOperationSync(AtomicOperation.EXECUTE_EVENT_LISTENER);
DbSession dbSession = environment.get(DbSession.class);
dbSession.delete(this);
return null;
}
}