/* 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.helper;
import org.activiti.engine.delegate.event.ActivitiEntityEvent;
import org.activiti.engine.delegate.event.ActivitiEvent;
import org.activiti.engine.delegate.event.ActivitiEventListener;
/**
* Base implementation of a {@link ActivitiEventListener}, used when creating event-listeners
* that are part of a BPMN definition.
*
* @author Frederik Heremans
*/
public abstract class BaseDelegateEventListener implements ActivitiEventListener {
protected Class<?> entityClass;
public void setEntityClass(Class<?> entityClass) {
this.entityClass = entityClass;
}
protected boolean isValidEvent(ActivitiEvent event) {
boolean valid = false;
if(entityClass != null) {
if(event instanceof ActivitiEntityEvent) {
Object entity = ((ActivitiEntityEvent) event).getEntity();
if(entity != null) {
valid = entityClass.isAssignableFrom(entity.getClass());
}
}
} else {
// If no class is specified, all events are valid
valid = true;
}
return valid;
}
}