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 javax.persistence.EntityManager;
022import javax.persistence.Query;
023
024import org.apache.oozie.CoordinatorJobBean;
025import org.apache.oozie.ErrorCode;
026import org.apache.oozie.util.ParamChecker;
027import org.apache.oozie.util.XLog;
028
029/**
030 * DB query executor to fetch columns 'user' and 'appName' from Coordinator Job table
031 */
032public class CoordinatorJobGetForUserAppnameJPAExecutor implements JPAExecutor<CoordinatorJobBean> {
033
034    private String coordJobId = null;
035
036    public CoordinatorJobGetForUserAppnameJPAExecutor(String coordJobId) {
037        ParamChecker.notNull(coordJobId, "coordJobId");
038        this.coordJobId = coordJobId;
039    }
040
041    /*
042     * (non-Javadoc)
043     *
044     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
045     */
046    @Override
047    public String getName() {
048        return "CoordinatorJobGetForUserAppnameJPAExecutor";
049    }
050
051    /*
052     * (non-Javadoc)
053     *
054     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.
055     * EntityManager)
056     */
057    @Override
058    public CoordinatorJobBean execute(EntityManager em) throws JPAExecutorException {
059        try {
060            Query q = em.createNamedQuery("GET_COORD_JOB_FOR_USER_APPNAME");
061            q.setParameter("id", coordJobId);
062            Object[] arr = (Object[]) q.getSingleResult();
063            CoordinatorJobBean bean = new CoordinatorJobBean();
064            if (arr[0] != null) {
065                bean.setUser((String) arr[0]);
066            }
067            if (arr[1] != null){
068                bean.setAppName((String) arr[1]);
069            }
070            return bean;
071        }
072        catch (Exception e) {
073            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
074        }
075    }
076
077}