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.ErrorCode;
026    import org.apache.oozie.WorkflowJobBean;
027    import org.apache.oozie.util.ParamChecker;
028    
029    /**
030     * Load the WorkflowJob into a Bean and return it.
031     */
032    public class WorkflowJobGetJPAExecutor implements JPAExecutor<WorkflowJobBean> {
033    
034        private String wfJobId = null;
035    
036        public WorkflowJobGetJPAExecutor(String wfJobId) {
037            ParamChecker.notNull(wfJobId, "wfJobId");
038            this.wfJobId = wfJobId;
039        }
040    
041        /* (non-Javadoc)
042         * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
043         */
044        @Override
045        public String getName() {
046            return "WorkflowJobGetJPAExecutor";
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 WorkflowJobBean execute(EntityManager em) throws JPAExecutorException {
055            List<WorkflowJobBean> wjBeans;
056            try {
057                Query q = em.createNamedQuery("GET_WORKFLOW");
058                q.setParameter("id", wfJobId);
059                wjBeans = q.getResultList();
060            }
061            catch (Exception e) {
062                throw new JPAExecutorException(ErrorCode.E0603, e);
063            }
064            WorkflowJobBean bean = null;
065            if (wjBeans != null && wjBeans.size() > 0) {
066                bean = wjBeans.get(0);
067                bean.setStatus(bean.getStatus());
068                return bean;
069            }
070            else {
071                throw new JPAExecutorException(ErrorCode.E0604, wfJobId);
072            }
073        }
074    }