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.util.ArrayList;
021    import java.util.List;
022    
023    import javax.persistence.EntityManager;
024    import javax.persistence.Query;
025    
026    import org.apache.oozie.BundleJobBean;
027    import org.apache.oozie.ErrorCode;
028    
029    /**
030     * Get a list of paused bundle Jobs;
031     */
032    public class BundleJobsGetPausedJPAExecutor implements JPAExecutor<List<BundleJobBean>> {
033        private int limit;
034    
035        public BundleJobsGetPausedJPAExecutor(int limit) {
036            this.limit = limit;
037        }
038    
039        @Override
040        public String getName() {
041            return "BundleJobsGetPausedJPAExecutor";
042        }
043    
044        @Override
045        @SuppressWarnings("unchecked")
046        public List<BundleJobBean> execute(EntityManager em) throws JPAExecutorException {
047            List<BundleJobBean> bjBeans;
048            List<BundleJobBean> jobList = new ArrayList<BundleJobBean>();
049            try {
050                Query q = em.createNamedQuery("GET_BUNDLE_JOBS_PAUSED");
051                if (limit > 0) {
052                    q.setMaxResults(limit);
053                }
054                bjBeans = q.getResultList();
055                for (BundleJobBean j : bjBeans) {
056                    jobList.add(j);
057                }
058            }
059            catch (Exception e) {
060                throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
061            }
062            return jobList;
063        }
064    }