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 javax.persistence.EntityManager;
021import javax.persistence.Query;
022
023import org.apache.oozie.CoordinatorJobBean;
024import org.apache.oozie.ErrorCode;
025import org.apache.oozie.util.ParamChecker;
026
027/**
028 * DB query executor to fetch columns 'user' and 'appName' from Coordinator Job table
029 */
030public class CoordinatorJobGetForUserAppnameJPAExecutor implements JPAExecutor<CoordinatorJobBean> {
031
032    private String coordJobId = null;
033
034    public CoordinatorJobGetForUserAppnameJPAExecutor(String coordJobId) {
035        ParamChecker.notNull(coordJobId, "coordJobId");
036        this.coordJobId = coordJobId;
037    }
038
039    /*
040     * (non-Javadoc)
041     *
042     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
043     */
044    public String getName() {
045        return "CoordJobGetForUserAppnameJPAExecutor";
046    }
047
048    /*
049     * (non-Javadoc)
050     *
051     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.
052     * EntityManager)
053     */
054    @Override
055    public CoordinatorJobBean execute(EntityManager em) throws JPAExecutorException {
056        try {
057            Query q = em.createNamedQuery("GET_COORD_JOB_FOR_USER_APPNAME");
058            q.setParameter("id", coordJobId);
059            Object[] arr = (Object[]) q.getSingleResult();
060            CoordinatorJobBean bean = new CoordinatorJobBean();
061            if (arr[0] != null) {
062                bean.setUser((String) arr[0]);
063            }
064            if (arr[1] != null){
065                bean.setAppName((String) arr[1]);
066            }
067            return bean;
068        }
069        catch (Exception e) {
070            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
071        }
072    }
073
074}