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.bam.processor; 018 019 import org.apache.camel.Exchange; 020 import org.apache.camel.Expression; 021 import org.apache.camel.Processor; 022 import org.apache.camel.bam.model.ActivityState; 023 import org.apache.camel.bam.model.ProcessInstance; 024 import org.apache.camel.bam.rules.ActivityRules; 025 import org.apache.commons.logging.Log; 026 import org.apache.commons.logging.LogFactory; 027 import org.springframework.orm.jpa.JpaTemplate; 028 import org.springframework.transaction.support.TransactionTemplate; 029 030 /** 031 * A concrete {@link Processor} for working on 032 * <a href="http://activemq.apache.org/camel/bam.html">BAM</a> which uses JPA as the persistence and uses the 033 * {@link ProcessInstance} entity to store the process information. 034 * 035 * @version $Revision: $ 036 */ 037 public class JpaBamProcessor extends JpaBamProcessorSupport<ProcessInstance> { 038 private static final transient Log log = LogFactory.getLog(JpaBamProcessor.class); 039 040 public JpaBamProcessor(TransactionTemplate transactionTemplate, JpaTemplate template, Expression<Exchange> correlationKeyExpression, ActivityRules activityRules) { 041 super(transactionTemplate, template, correlationKeyExpression, activityRules); 042 } 043 044 public JpaBamProcessor(TransactionTemplate transactionTemplate, JpaTemplate template, Expression<Exchange> correlationKeyExpression, ActivityRules activityRules, Class<ProcessInstance> entitytype) { 045 super(transactionTemplate, template, correlationKeyExpression, activityRules, entitytype); 046 } 047 048 protected void processEntity(Exchange exchange, ProcessInstance process) throws Exception { 049 if (log.isDebugEnabled()) { 050 log.debug("Processing process instance: " + process); 051 } 052 053 // lets force the lazy creation of this activity 054 ActivityRules rules = getActivityRules(); 055 ActivityState state = process.getOrCreateActivityState(rules); 056 057 state.processExchange(rules, new ProcessContext(exchange, rules, state)); 058 059 rules.getProcessRules().processExchange(exchange, process); 060 } 061 }