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001 /**
002 * Licensed to the Apache Software Foundation (ASF) under one
003 * or more contributor license agreements. See the NOTICE file
004 * distributed with this work for additional information
005 * regarding copyright ownership. The ASF licenses this file
006 * to you under the Apache License, Version 2.0 (the
007 * "License"); you may not use this file except in compliance
008 * with 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.oozie.executor.jpa;
019
020 import java.util.List;
021
022 import javax.persistence.EntityManager;
023 import javax.persistence.Query;
024
025 import org.apache.oozie.CoordinatorActionBean;
026 import org.apache.oozie.ErrorCode;
027 import org.apache.oozie.util.ParamChecker;
028
029 /**
030 * Load coordinator action by externalId.
031 */
032 public class CoordActionGetForExternalIdJPAExecutor implements JPAExecutor<CoordinatorActionBean> {
033
034 private String externalId = null;
035
036 public CoordActionGetForExternalIdJPAExecutor(String externalId) {
037 ParamChecker.notNull(externalId, "externalId");
038 this.externalId = externalId;
039 }
040
041 /* (non-Javadoc)
042 * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
043 */
044 @Override
045 public String getName() {
046 return "CoordActionGetForExternalIdJPAExecutor";
047 }
048
049 /* (non-Javadoc)
050 * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
051 */
052 @Override
053 @SuppressWarnings("unchecked")
054 public CoordinatorActionBean execute(EntityManager em) throws JPAExecutorException {
055 try {
056 CoordinatorActionBean caBean = null;
057 Query q = em.createNamedQuery("GET_COORD_ACTION_FOR_EXTERNALID");
058 q.setParameter("externalId", externalId);
059 List<CoordinatorActionBean> actionList = q.getResultList();
060 if (actionList.size() > 0) {
061 caBean = actionList.get(0);
062 }
063 return caBean;
064 }
065 catch (Exception e) {
066 throw new JPAExecutorException(ErrorCode.E0603, e);
067 }
068 }
069
070 }