/* 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.camunda.bpm.engine.impl.task.listener;
import static org.camunda.bpm.engine.impl.util.ClassDelegateUtil.instantiateDelegate;
import java.util.List;
import org.camunda.bpm.engine.ProcessEngineException;
import org.camunda.bpm.engine.delegate.DelegateTask;
import org.camunda.bpm.engine.delegate.TaskListener;
import org.camunda.bpm.engine.impl.bpmn.parser.FieldDeclaration;
import org.camunda.bpm.engine.impl.context.Context;
import org.camunda.bpm.engine.impl.delegate.ClassDelegate;
import org.camunda.bpm.engine.impl.task.delegate.TaskListenerInvocation;
/**
* @author Roman Smirnov
*
*/
public class ClassDelegateTaskListener extends ClassDelegate implements TaskListener {
public ClassDelegateTaskListener(String className, List<FieldDeclaration> fieldDeclarations) {
super(className, fieldDeclarations);
}
public ClassDelegateTaskListener(Class<?> clazz, List<FieldDeclaration> fieldDeclarations) {
super(clazz, fieldDeclarations);
}
public void notify(DelegateTask delegateTask) {
TaskListener taskListenerInstance = getTaskListenerInstance();
try {
Context.getProcessEngineConfiguration()
.getDelegateInterceptor()
.handleInvocation(new TaskListenerInvocation(taskListenerInstance, delegateTask));
}catch (Exception e) {
throw new ProcessEngineException("Exception while invoking TaskListener: "+e.getMessage(), e);
}
}
protected TaskListener getTaskListenerInstance() {
Object delegateInstance = instantiateDelegate(className, fieldDeclarations);
if (delegateInstance instanceof TaskListener) {
return (TaskListener) delegateInstance;
} else {
throw new ProcessEngineException(delegateInstance.getClass().getName()+" doesn't implement "+TaskListener.class);
}
}
}