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.model;
018
019 import java.util.List;
020
021 import javax.persistence.Entity;
022 import javax.persistence.GeneratedValue;
023 import javax.persistence.Id;
024 import javax.persistence.UniqueConstraint;
025
026 import org.apache.camel.util.ObjectHelper;
027 import org.apache.commons.logging.Log;
028 import org.apache.commons.logging.LogFactory;
029
030 import org.springframework.orm.jpa.JpaTemplate;
031
032 /**
033 * @version $Revision: 1.1 $
034 */
035 @Entity
036 @UniqueConstraint(columnNames = {"name" })
037 public class ProcessDefinition extends EntitySupport {
038 private static final transient Log LOG = LogFactory.getLog(ProcessDefinition.class);
039 private String name;
040
041 // This crap is required to work around a bug in hibernate
042 @Override
043 @Id
044 @GeneratedValue
045 public Long getId() {
046 return super.getId();
047 }
048
049 public String getName() {
050 return name;
051 }
052
053 public void setName(String name) {
054 this.name = name;
055 }
056
057 public static ProcessDefinition getRefreshedProcessDefinition(JpaTemplate template, ProcessDefinition definition) {
058 // TODO refresh doesn't tend to work - maybe its a spring thing?
059 // template.refresh(definition);
060
061 ObjectHelper.notNull(definition, "definition");
062 Long id = definition.getId();
063 if (id == null) {
064 LOG.warn("No primary key is available!");
065 return findOrCreateProcessDefinition(template, definition.getName());
066 }
067 definition = template.find(ProcessDefinition.class, id);
068 return definition;
069 }
070
071 public static ProcessDefinition findOrCreateProcessDefinition(JpaTemplate template, String processName) {
072 List<ProcessDefinition> list = template.find("select x from " + ProcessDefinition.class.getName() + " x where x.name = ?1", processName);
073 if (!list.isEmpty()) {
074 return list.get(0);
075 } else {
076 ProcessDefinition answer = new ProcessDefinition();
077 answer.setName(processName);
078 template.persist(answer);
079 return answer;
080 }
081 }
082 }