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
019package org.apache.oozie.executor.jpa;
020
021import java.util.List;
022
023import javax.persistence.EntityManager;
024import javax.persistence.Query;
025
026import org.apache.oozie.ErrorCode;
027import org.apache.oozie.WorkflowJobBean;
028import org.apache.oozie.util.ParamChecker;
029
030/**
031 * Load the WorkflowJob into a Bean and return it.
032 */
033public class WorkflowJobGetJPAExecutor implements JPAExecutor<WorkflowJobBean> {
034
035    private String wfJobId = null;
036
037    public WorkflowJobGetJPAExecutor(String wfJobId) {
038        ParamChecker.notNull(wfJobId, "wfJobId");
039        this.wfJobId = wfJobId;
040    }
041
042    /* (non-Javadoc)
043     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
044     */
045    @Override
046    public String getName() {
047        return "WorkflowJobGetJPAExecutor";
048    }
049
050    /* (non-Javadoc)
051     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
052     */
053    @Override
054    @SuppressWarnings("unchecked")
055    public WorkflowJobBean execute(EntityManager em) throws JPAExecutorException {
056        List<WorkflowJobBean> wjBeans;
057        try {
058            Query q = em.createNamedQuery("GET_WORKFLOW");
059            q.setParameter("id", wfJobId);
060            wjBeans = q.getResultList();
061        }
062        catch (Exception e) {
063            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
064        }
065        WorkflowJobBean bean = null;
066        if (wjBeans != null && wjBeans.size() > 0) {
067            bean = wjBeans.get(0);
068            bean.setStatus(bean.getStatus());
069            return bean;
070        }
071        else {
072            throw new JPAExecutorException(ErrorCode.E0604, wfJobId);
073        }
074    }
075}