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;
026
027/**
028 * Load the list of CoordinatorJob with the passed in parentId
029 */
030public class CoordJobsGetFromParentIdJPAExecutor implements JPAExecutor<List<String>> {
031
032    private String parentId;
033    private int limit;
034    private int offset;
035
036    public CoordJobsGetFromParentIdJPAExecutor(String parentId, int limit) {
037        this(parentId, 0, limit);
038    }
039
040    public CoordJobsGetFromParentIdJPAExecutor(String parentId, int offset, int limit) {
041        this.parentId = parentId;
042        this.offset = offset;
043        this.limit = limit;
044    }
045
046    /* (non-Javadoc)
047     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
048     */
049    @Override
050    public String getName() {
051        return "CoordinatorJobsGetFromParentIdJPAExecutor";
052    }
053
054    /* (non-Javadoc)
055     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
056     */
057    @Override
058    @SuppressWarnings("unchecked")
059    public List<String> execute(EntityManager em) throws JPAExecutorException {
060        List<String> coords = null;
061        try {
062            Query jobQ = em.createNamedQuery("GET_COORD_JOBS_WITH_PARENT_ID");
063            jobQ.setParameter("parentId", parentId);
064            jobQ.setMaxResults(limit);
065            jobQ.setFirstResult(offset);
066            coords = jobQ.getResultList();
067        }
068        catch (Exception e) {
069            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
070        }
071        return coords;
072    }
073
074}