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    package org.apache.oozie.executor.jpa;
019    
020    import java.sql.Timestamp;
021    import java.util.List;
022    
023    import javax.persistence.EntityManager;
024    import javax.persistence.Query;
025    
026    import org.apache.oozie.ErrorCode;
027    
028    /**
029     * Load the list of completed BundleJob for purge ready.
030     */
031    public class BundleJobsGetForPurgeJPAExecutor implements JPAExecutor<List<String>> {
032    
033        private static final long DAY_IN_MS = 24 * 60 * 60 * 1000;
034        private long olderThanDays;
035        private int limit;
036        private int offset;
037    
038        public BundleJobsGetForPurgeJPAExecutor(long olderThanDays, int limit) {
039            this(olderThanDays, 0, limit);
040        }
041    
042        public BundleJobsGetForPurgeJPAExecutor(long olderThanDays, int offset, int limit) {
043            this.olderThanDays = olderThanDays;
044            this.offset = offset;
045            this.limit = limit;
046        }
047    
048        /* (non-Javadoc)
049         * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
050         */
051        @Override
052        public String getName() {
053            return "BundleJobsGetForPurgeJPAExecutor";
054        }
055    
056        /* (non-Javadoc)
057         * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
058         */
059        @Override
060        @SuppressWarnings("unchecked")
061        public List<String> execute(EntityManager em) throws JPAExecutorException {
062            List<String> bundleJobs = null;
063            try {
064                Timestamp lastModTm = new Timestamp(System.currentTimeMillis() - (olderThanDays * DAY_IN_MS));
065                Query jobQ = em.createNamedQuery("GET_COMPLETED_BUNDLE_JOBS_OLDER_THAN");
066                jobQ.setParameter("lastModTime", lastModTm);
067                jobQ.setMaxResults(limit);
068                jobQ.setFirstResult(offset);
069                bundleJobs = jobQ.getResultList();
070            }
071            catch (Exception e) {
072                throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
073            }
074            return bundleJobs;
075        }
076    
077    }