001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements. See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License. You may obtain a copy of the License at
008 *
009 * http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017 package org.apache.camel.spring.spi;
018
019 import org.apache.camel.Exchange;
020 import org.apache.camel.RuntimeCamelException;
021 import org.apache.camel.processor.DelegateProcessor;
022 import org.apache.commons.logging.Log;
023 import org.apache.commons.logging.LogFactory;
024
025 import org.springframework.transaction.TransactionDefinition;
026 import org.springframework.transaction.TransactionStatus;
027 import org.springframework.transaction.support.TransactionCallbackWithoutResult;
028 import org.springframework.transaction.support.TransactionTemplate;
029
030 /**
031 * @version $Revision: 1.1 $
032 */
033 public class TransactionInterceptor extends DelegateProcessor {
034 private static final transient Log LOG = LogFactory.getLog(TransactionInterceptor.class);
035 private final TransactionTemplate transactionTemplate;
036
037 public TransactionInterceptor(TransactionTemplate transactionTemplate) {
038 this.transactionTemplate = transactionTemplate;
039 }
040
041 public void process(final Exchange exchange) {
042 LOG.info("transaction begin");
043
044 transactionTemplate.execute(new TransactionCallbackWithoutResult() {
045 protected void doInTransactionWithoutResult(TransactionStatus status) {
046 try {
047 processNext(exchange);
048 } catch (Exception e) {
049 throw new RuntimeCamelException(e);
050 }
051 }
052 });
053
054 LOG.info("transaction commit");
055 }
056
057 @Override
058 public String toString() {
059 return "TransactionInterceptor:" + propagationBehaviorToString(transactionTemplate.getPropagationBehavior()) + "[" + getProcessor() + "]";
060 }
061
062 private String propagationBehaviorToString(int propagationBehavior) {
063 String rc;
064 switch (propagationBehavior) {
065 case TransactionDefinition.PROPAGATION_MANDATORY:
066 rc = "PROPAGATION_MANDATORY";
067 break;
068 case TransactionDefinition.PROPAGATION_NESTED:
069 rc = "PROPAGATION_NESTED";
070 break;
071 case TransactionDefinition.PROPAGATION_NEVER:
072 rc = "PROPAGATION_NEVER";
073 break;
074 case TransactionDefinition.PROPAGATION_NOT_SUPPORTED:
075 rc = "PROPAGATION_NOT_SUPPORTED";
076 break;
077 case TransactionDefinition.PROPAGATION_REQUIRED:
078 rc = "PROPAGATION_REQUIRED";
079 break;
080 case TransactionDefinition.PROPAGATION_REQUIRES_NEW:
081 rc = "PROPAGATION_REQUIRES_NEW";
082 break;
083 case TransactionDefinition.PROPAGATION_SUPPORTS:
084 rc = "PROPAGATION_SUPPORTS";
085 break;
086 default:
087 rc = "UNKOWN";
088 }
089 return rc;
090 }
091 }