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.WorkflowActionBean; 025 import org.apache.oozie.util.ParamChecker; 026 027 public class WorkflowActionsGetPendingJPAExecutor implements JPAExecutor<List<WorkflowActionBean>>{ 028 private long minimumPendingAgeSecs = 0; 029 030 public WorkflowActionsGetPendingJPAExecutor(final long minimumPendingAgeSecs) { 031 ParamChecker.notNull(minimumPendingAgeSecs, "minimumPendingAgeSecs"); 032 this.minimumPendingAgeSecs = minimumPendingAgeSecs; 033 } 034 035 /* (non-Javadoc) 036 * @see org.apache.oozie.executor.jpa.JPAExecutor#getName() 037 */ 038 @Override 039 public String getName() { 040 return "WorkflowActionsGetPendingJPAExecutor"; 041 } 042 043 /** 044 * Load All the actions that are pending for more than given time. 045 * 046 * @param minimumPendingAgeSecs Minimum Pending age in seconds 047 * @return List of action beans 048 * @throws JPAExecutorException 049 */ 050 @Override 051 public List<WorkflowActionBean> execute(EntityManager em) throws JPAExecutorException { 052 Timestamp ts = new Timestamp(System.currentTimeMillis() - minimumPendingAgeSecs * 1000); 053 List<WorkflowActionBean> actionList = null; 054 try { 055 Query q = em.createNamedQuery("GET_PENDING_ACTIONS"); 056 q.setParameter("pendingAge", ts); 057 actionList = q.getResultList(); 058 } 059 catch (IllegalStateException e) { 060 throw new JPAExecutorException(ErrorCode.E0601, e.getMessage(), e); 061 } 062 return actionList; 063 } 064 }