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 javax.persistence.EntityManager; 018 import javax.persistence.Query; 019 020 import org.apache.oozie.ErrorCode; 021 import org.apache.oozie.util.ParamChecker; 022 023 /** 024 * Load the number of running actions for a coordinator job. 025 */ 026 public class CoordJobGetRunningActionsCountJPAExecutor implements JPAExecutor<Integer> { 027 028 private String coordJobId = null; 029 030 public CoordJobGetRunningActionsCountJPAExecutor(String coordJobId) { 031 ParamChecker.notNull(coordJobId, "coordJobId"); 032 this.coordJobId = coordJobId; 033 } 034 035 @Override 036 public String getName() { 037 return "CoordJobGetRunningActionsCountJPAExecutor"; 038 } 039 040 @Override 041 public Integer execute(EntityManager em) throws JPAExecutorException { 042 try { 043 Query q = em.createNamedQuery("GET_COORD_RUNNING_ACTIONS_COUNT"); 044 045 q.setParameter("jobId", coordJobId); 046 Long count = (Long) q.getSingleResult(); 047 return Integer.valueOf(count.intValue()); 048 } 049 catch (Exception e) { 050 throw new JPAExecutorException(ErrorCode.E0603, e); 051 } 052 } 053 054 }