001 /** 002 * Copyright (c) 2010 Yahoo! Inc. All rights reserved. 003 * Licensed under the Apache License, Version 2.0 (the "License"); 004 * you may not use this file except in compliance with the License. 005 * You may obtain a copy of the License at 006 * 007 * http://www.apache.org/licenses/LICENSE-2.0 008 * 009 * Unless required by applicable law or agreed to in writing, software 010 * distributed under the License is distributed on an "AS IS" BASIS, 011 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 012 * See the License for the specific language governing permissions and 013 * limitations under the License. See accompanying LICENSE file. 014 */ 015 package org.apache.oozie.executor.jpa; 016 017 import java.sql.Timestamp; 018 import java.util.List; 019 020 import javax.persistence.EntityManager; 021 import javax.persistence.Query; 022 023 import org.apache.oozie.ErrorCode; 024 import org.apache.oozie.WorkflowJobBean; 025 026 /** 027 * Load the list of completed WorkflowJob for purge ready. 028 */ 029 public class WorkflowJobsGetForPurgeJPAExecutor implements JPAExecutor<List<WorkflowJobBean>> { 030 031 private static final long DAY_IN_MS = 24 * 60 * 60 * 1000; 032 private long olderThanDays; 033 private int limit; 034 035 public WorkflowJobsGetForPurgeJPAExecutor(long olderThanDays, int limit) { 036 this.olderThanDays = olderThanDays; 037 this.limit = limit; 038 } 039 040 /* (non-Javadoc) 041 * @see org.apache.oozie.executor.jpa.JPAExecutor#getName() 042 */ 043 @Override 044 public String getName() { 045 return "WorkflowJobsGetForPurgeJPAExecutor"; 046 } 047 048 /* (non-Javadoc) 049 * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager) 050 */ 051 @Override 052 @SuppressWarnings("unchecked") 053 public List<WorkflowJobBean> execute(EntityManager em) throws JPAExecutorException { 054 List<WorkflowJobBean> workflows = null; 055 try { 056 Timestamp maxEndTime = new Timestamp(System.currentTimeMillis() - (olderThanDays * DAY_IN_MS)); 057 Query jobQ = em.createNamedQuery("GET_COMPLETED_WORKFLOWS_OLDER_THAN"); 058 jobQ.setParameter("endTime", maxEndTime); 059 jobQ.setMaxResults(limit); 060 workflows = jobQ.getResultList(); 061 } 062 catch (Exception e) { 063 throw new JPAExecutorException(ErrorCode.E0603, e); 064 } 065 return workflows; 066 } 067 068 }