001/* 002 * Copyright 2002-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.jms.connection; 018 019import java.util.ArrayList; 020import java.util.List; 021 022import javax.jms.ExceptionListener; 023import javax.jms.JMSException; 024 025import org.springframework.util.Assert; 026 027/** 028 * Implementation of the JMS ExceptionListener interface that supports chaining, 029 * allowing the addition of multiple ExceptionListener instances in order. 030 * 031 * @author Juergen Hoeller 032 * @since 2.0 033 */ 034public class ChainedExceptionListener implements ExceptionListener { 035 036 /** List of ExceptionListeners. */ 037 private final List<ExceptionListener> delegates = new ArrayList<>(2); 038 039 040 /** 041 * Add an ExceptionListener to the chained delegate list. 042 */ 043 public final void addDelegate(ExceptionListener listener) { 044 Assert.notNull(listener, "ExceptionListener must not be null"); 045 this.delegates.add(listener); 046 } 047 048 /** 049 * Return all registered ExceptionListener delegates (as array). 050 */ 051 public final ExceptionListener[] getDelegates() { 052 return this.delegates.toArray(new ExceptionListener[0]); 053 } 054 055 056 @Override 057 public void onException(JMSException ex) { 058 for (ExceptionListener listener : this.delegates) { 059 listener.onException(ex); 060 } 061 } 062 063}