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.sla;
019    
020    import java.sql.Timestamp;
021    import java.util.List;
022    
023    import javax.persistence.EntityManager;
024    import javax.persistence.Query;
025    
026    import org.apache.oozie.ErrorCode;
027    import org.apache.oozie.executor.jpa.JPAExecutor;
028    import org.apache.oozie.executor.jpa.JPAExecutorException;
029    import org.apache.oozie.sla.SLASummaryBean;
030    
031    /**
032     * Load the list of SLASummaryBean when Oozie restarts and return the list.
033     */
034    public class SLASummaryGetRecordsOnRestartJPAExecutor implements JPAExecutor<List<SLASummaryBean>> {
035    
036        private int days;
037        public SLASummaryGetRecordsOnRestartJPAExecutor (int days) {
038            this.days = days;
039        }
040    
041        @Override
042        public String getName() {
043            return "SLASummaryGetRecordsOnRestartJPAExecutor";
044        }
045    
046        @SuppressWarnings("unchecked")
047            @Override
048        public List<SLASummaryBean> execute(EntityManager em) throws JPAExecutorException {
049            List<SLASummaryBean> ssBean;
050            try {
051                Query q = em.createNamedQuery("GET_SLA_SUMMARY_RECORDS_RESTART");
052                Timestamp ts = new Timestamp(System.currentTimeMillis() - days * 24 * 60 * 60 * 1000);
053                q.setParameter("lastModifiedTime", ts);
054                ssBean = q.getResultList();
055                return ssBean;
056            }
057            catch (Exception e) {
058                throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
059            }
060        }
061    
062    }