001 /** 002 * 003 * Licensed to the Apache Software Foundation (ASF) under one or more 004 * contributor license agreements. See the NOTICE file distributed with 005 * this work for additional information regarding copyright ownership. 006 * The ASF licenses this file to You under the Apache License, Version 2.0 007 * (the "License"); you may not use this file except in compliance with 008 * the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, software 013 * distributed under the License is distributed on an "AS IS" BASIS, 014 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 015 * See the License for the specific language governing permissions and 016 * limitations under the License. 017 */ 018 package org.apache.camel.spring.spi; 019 020 import org.apache.camel.Processor; 021 import org.apache.camel.processor.DelegateProcessor; 022 import org.apache.camel.spi.Interceptor; 023 import org.apache.commons.logging.Log; 024 import org.apache.commons.logging.LogFactory; 025 import org.springframework.transaction.TransactionStatus; 026 import org.springframework.transaction.support.TransactionCallbackWithoutResult; 027 import org.springframework.transaction.support.TransactionTemplate; 028 029 /** 030 * Wraps the processor in a Spring transaction 031 * 032 * @version $Revision: 1.1 $ 033 */ 034 public class SpringTransactionInterceptor<E> implements Interceptor<E> { 035 private static final transient Log log = LogFactory.getLog(SpringTransactionInterceptor.class); 036 037 private TransactionTemplate template; 038 039 public SpringTransactionInterceptor() { 040 } 041 042 public SpringTransactionInterceptor(TransactionTemplate template) { 043 this.template = template; 044 } 045 046 public Processor<E> addIntercetors(Processor<E> processor) { 047 final TransactionTemplate transactionTemplate = getTemplate(); 048 if (transactionTemplate == null) { 049 log.warn("No TransactionTemplate available so transactions will not be enabled!"); 050 return processor; 051 } 052 053 return new DelegateProcessor<E>(processor) { 054 055 public void process(final E exchange) { 056 transactionTemplate.execute(new TransactionCallbackWithoutResult() { 057 protected void doInTransactionWithoutResult(TransactionStatus status) { 058 processNext(exchange); 059 } 060 }); 061 } 062 063 @Override 064 public String toString() { 065 return "SpringTransaction[" + getNext() + "]"; 066 } 067 }; 068 } 069 070 public TransactionTemplate getTemplate() { 071 return template; 072 } 073 074 public void setTemplate(TransactionTemplate template) { 075 this.template = template; 076 } 077 }