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;
027
028/**
029 * Load the list of CoordinatorJob with the passed in parentId
030 */
031public class CoordJobsGetFromParentIdJPAExecutor implements JPAExecutor<List<String>> {
032
033    private String parentId;
034    private int limit;
035    private int offset;
036
037    public CoordJobsGetFromParentIdJPAExecutor(String parentId, int limit) {
038        this(parentId, 0, limit);
039    }
040
041    public CoordJobsGetFromParentIdJPAExecutor(String parentId, int offset, int limit) {
042        this.parentId = parentId;
043        this.offset = offset;
044        this.limit = limit;
045    }
046
047    /* (non-Javadoc)
048     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
049     */
050    @Override
051    public String getName() {
052        return "CoordJobsGetFromParentIdJPAExecutor";
053    }
054
055    /* (non-Javadoc)
056     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
057     */
058    @Override
059    @SuppressWarnings("unchecked")
060    public List<String> execute(EntityManager em) throws JPAExecutorException {
061        List<String> coords = null;
062        try {
063            Query jobQ = em.createNamedQuery("GET_COORD_JOBS_WITH_PARENT_ID");
064            jobQ.setParameter("parentId", parentId);
065            jobQ.setMaxResults(limit);
066            jobQ.setFirstResult(offset);
067            coords = jobQ.getResultList();
068        }
069        catch (Exception e) {
070            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
071        }
072        return coords;
073    }
074
075}