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.sql.Timestamp;
021
022import javax.persistence.EntityManager;
023import javax.persistence.Query;
024
025import org.apache.oozie.ErrorCode;
026
027/**
028 * Count the number of Coordinator children of a parent bundle that are not ready to be purged
029 */
030public class CoordJobsCountNotForPurgeFromParentIdJPAExecutor implements JPAExecutor<Long> {
031
032    private static final long DAY_IN_MS = 24 * 60 * 60 * 1000;
033    private long olderThanDays;
034    private String parentId;
035
036    public CoordJobsCountNotForPurgeFromParentIdJPAExecutor(long olderThanDays, String parentId) {
037        this.olderThanDays = olderThanDays;
038        this.parentId = parentId;
039    }
040
041    /* (non-Javadoc)
042     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
043     */
044    @Override
045    public String getName() {
046        return "CoordChildrenCountNotForPurgeJPAExecutor";
047    }
048
049    /* (non-Javadoc)
050     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
051     */
052    @Override
053    @SuppressWarnings("unchecked")
054    public Long execute(EntityManager em) throws JPAExecutorException {
055        Long count = 0L;
056        try {
057            Timestamp lastModTm = new Timestamp(System.currentTimeMillis() - (olderThanDays * DAY_IN_MS));
058            Query jobQ = em.createNamedQuery("GET_COORD_COUNT_WITH_PARENT_ID_NOT_READY_FOR_PURGE");
059            jobQ.setParameter("parentId", parentId);
060            jobQ.setParameter("lastModTime", lastModTm);
061            count = (Long) jobQ.getSingleResult();
062        }
063        catch (Exception e) {
064            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
065        }
066        return count;
067    }
068
069}