/* 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.activiti.engine.impl.bpmn.behavior;
import java.util.ArrayList;
import java.util.List;
import org.activiti.engine.delegate.DelegateExecution;
import org.activiti.engine.delegate.Expression;
import org.activiti.engine.impl.bpmn.data.AbstractDataAssociation;
import org.activiti.engine.impl.context.Context;
import org.activiti.engine.impl.pvm.PvmProcessInstance;
import org.activiti.engine.impl.pvm.delegate.ActivityExecution;
import org.activiti.engine.impl.pvm.delegate.SubProcessActivityBehavior;
import org.activiti.engine.impl.pvm.process.ProcessDefinitionImpl;
/**
* Implementation of the BPMN 2.0 call activity
* (limited currently to calling a subprocess and not (yet) a global task).
*
* @author Joram Barrez
*/
public class CallActivityBehavior extends AbstractBpmnActivityBehavior implements SubProcessActivityBehavior {
protected String processDefinitonKey;
private List<AbstractDataAssociation> dataInputAssociations = new ArrayList<AbstractDataAssociation>();
private List<AbstractDataAssociation> dataOutputAssociations = new ArrayList<AbstractDataAssociation>();
private Expression processDefinitionExpression;
public CallActivityBehavior(String processDefinitionKey) {
this.processDefinitonKey = processDefinitionKey;
}
public CallActivityBehavior(Expression processDefinitionExpression) {
super();
this.processDefinitionExpression = processDefinitionExpression;
}
public void addDataInputAssociation(AbstractDataAssociation dataInputAssociation) {
this.dataInputAssociations.add(dataInputAssociation);
}
public void addDataOutputAssociation(AbstractDataAssociation dataOutputAssociation) {
this.dataOutputAssociations.add(dataOutputAssociation);
}
public void execute(ActivityExecution execution) throws Exception {
String processDefinitonKey = this.processDefinitonKey;
if (processDefinitionExpression != null) {
processDefinitonKey = (String) processDefinitionExpression.getValue(execution);
}
ProcessDefinitionImpl processDefinition = Context
.getProcessEngineConfiguration()
.getDeploymentCache()
.findDeployedLatestProcessDefinitionByKey(processDefinitonKey);
PvmProcessInstance subProcessInstance = execution.createSubProcessInstance(processDefinition);
// copy process variables
for (AbstractDataAssociation dataInputAssociation : dataInputAssociations) {
Object value = null;
if (dataInputAssociation.getSourceExpression()!=null) {
value = dataInputAssociation.getSourceExpression().getValue(execution);
}
else {
value = execution.getVariable(dataInputAssociation.getSource());
}
subProcessInstance.setVariable(dataInputAssociation.getTarget(), value);
}
subProcessInstance.start();
}
public void setProcessDefinitonKey(String processDefinitonKey) {
this.processDefinitonKey = processDefinitonKey;
}
public String getProcessDefinitonKey() {
return processDefinitonKey;
}
public void completing(DelegateExecution execution, DelegateExecution subProcessInstance) throws Exception {
// only data. no control flow available on this execution.
// copy process variables
for (AbstractDataAssociation dataOutputAssociation : dataOutputAssociations) {
Object value = null;
if (dataOutputAssociation.getSourceExpression()!=null) {
value = dataOutputAssociation.getSourceExpression().getValue(subProcessInstance);
}
else {
value = subProcessInstance.getVariable(dataOutputAssociation.getSource());
}
execution.setVariable(dataOutputAssociation.getTarget(), value);
}
}
public void completed(ActivityExecution execution) throws Exception {
// only control flow. no sub process instance data available
leave(execution);
}
}