org.springframework.jms.connection.ChainedExceptionListener Maven / Gradle / Ivy
/*
* Copyright 2002-2006 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.jms.connection;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.jms.ExceptionListener;
import javax.jms.JMSException;
import org.springframework.util.Assert;
/**
* Implementation of the JMS ExceptionListener interface that supports chaining,
* allowing the addition of multiple ExceptionListener instances in order.
*
* @author Juergen Hoeller
* @since 2.0
*/
public class ChainedExceptionListener implements ExceptionListener {
/** List of ExceptionListeners */
private final List delegates = new ArrayList(2);
/**
* Add an ExceptionListener to the chained delegate list.
*/
public final void addDelegate(ExceptionListener listener) {
Assert.notNull(listener, "ExceptionListener must not be null");
this.delegates.add(listener);
}
/**
* Return all registered ExceptionListener delegates (as array).
*/
public final ExceptionListener[] getDelegates() {
return (ExceptionListener[]) this.delegates.toArray(new ExceptionListener[this.delegates.size()]);
}
public void onException(JMSException ex) {
for (Iterator it = this.delegates.iterator(); it.hasNext();) {
ExceptionListener listener = (ExceptionListener) it.next();
listener.onException(ex);
}
}
}