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.ArrayList; 022import java.util.List; 023 024import javax.persistence.EntityManager; 025import javax.persistence.Query; 026 027import org.apache.oozie.CoordinatorJobBean; 028import org.apache.oozie.ErrorCode; 029 030/** 031 * Get a list of Coordinator Jobs that are in pending. The result is ordered by lastModifiedTimestamp. 032 */ 033public class CoordJobsGetPendingJPAExecutor implements JPAExecutor<List<CoordinatorJobBean>> { 034 private int limit; 035 036 public CoordJobsGetPendingJPAExecutor(int limit) { 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 "CoordJobsGetPendingJPAExecutor"; 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<CoordinatorJobBean> execute(EntityManager em) throws JPAExecutorException { 054 List<CoordinatorJobBean> coordBeans; 055 try { 056 Query q = em.createNamedQuery("GET_COORD_JOBS_PENDING"); 057 if (limit > 0) { 058 q.setMaxResults(limit); 059 } 060 coordBeans = q.getResultList(); 061 } 062 catch (Exception e) { 063 throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e); 064 } 065 return coordBeans; 066 } 067}