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.sla;
020
021import java.sql.Timestamp;
022import java.util.List;
023
024import javax.persistence.EntityManager;
025import javax.persistence.Query;
026
027import org.apache.oozie.ErrorCode;
028import org.apache.oozie.executor.jpa.JPAExecutor;
029import org.apache.oozie.executor.jpa.JPAExecutorException;
030import org.apache.oozie.sla.SLASummaryBean;
031
032/**
033 * Load the list of SLASummaryBean when Oozie restarts and return the list.
034 */
035public class SLASummaryGetRecordsOnRestartJPAExecutor implements JPAExecutor<List<SLASummaryBean>> {
036
037    private int days;
038    public SLASummaryGetRecordsOnRestartJPAExecutor (int days) {
039        this.days = days;
040    }
041
042    @Override
043    public String getName() {
044        return "SLASummaryGetRecordsOnRestartJPAExecutor";
045    }
046
047    @SuppressWarnings("unchecked")
048        @Override
049    public List<SLASummaryBean> execute(EntityManager em) throws JPAExecutorException {
050        List<SLASummaryBean> ssBean;
051        try {
052            Query q = em.createNamedQuery("GET_SLA_SUMMARY_RECORDS_RESTART");
053            Timestamp ts = new Timestamp(System.currentTimeMillis() - days * 24 * 60 * 60 * 1000);
054            q.setParameter("lastModifiedTime", ts);
055            ssBean = q.getResultList();
056            return ssBean;
057        }
058        catch (Exception e) {
059            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
060        }
061    }
062
063}