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 */
018package org.apache.oozie.executor.jpa;
019
020import java.util.List;
021
022import javax.persistence.EntityManager;
023import javax.persistence.Query;
024
025import org.apache.oozie.ErrorCode;
026import org.apache.oozie.WorkflowJobBean;
027import org.apache.oozie.util.ParamChecker;
028
029/**
030 * Load the WorkflowJob into a Bean and return it.
031 */
032public 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.getMessage(), 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}