/*
* Copyright 2013-2016 the original author or authors.
*
* 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.springframework.integration.event;
import org.springframework.context.ApplicationEvent;
/**
* Base class for all {@link ApplicationEvent}s generated by the framework.
* Contains an optional cause field; a separate Exception event hierarchy
* is not possible because of Java single inheritance (modules should make
* all their events subclasses of 'xxxIntegrationEvent').
*
* @author Gary Russell
* @since 3.0
*
*/
@SuppressWarnings("serial")
public abstract class IntegrationEvent extends ApplicationEvent {
private final Throwable cause;
public IntegrationEvent(Object source) {
super(source);
this.cause = null;
}
public IntegrationEvent(Object source, Throwable cause) {
super(source);
this.cause = cause;
}
public Throwable getCause() {
return this.cause;
}
@Override
public String toString() {
return this.getClass().getSimpleName() + " [source=" + this.getSource() +
(this.cause == null ? "" : ", cause=" + this.cause) + "]";
}
}