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 javax.persistence.EntityManager;
021    import javax.persistence.Query;
022    
023    import org.apache.oozie.ErrorCode;
024    import org.apache.oozie.executor.jpa.JPAExecutor;
025    import org.apache.oozie.executor.jpa.JPAExecutorException;
026    import org.apache.oozie.sla.SLARegistrationBean;
027    
028    /**
029     * Load SLARegistrationBean on restart
030     */
031    public class SLARegistrationGetOnRestartJPAExecutor implements JPAExecutor<SLARegistrationBean> {
032    
033        private String id;
034    
035        public SLARegistrationGetOnRestartJPAExecutor(String id) {
036            this.id = id;
037        }
038    
039        @Override
040        public String getName() {
041            return "SLARegistrationGetOnRestartJPAExecutor";
042        }
043    
044        @Override
045        public SLARegistrationBean execute(EntityManager em) throws JPAExecutorException {
046            try {
047                Query q = em.createNamedQuery("GET_SLA_REG_ON_RESTART");
048                q.setParameter("id", id);
049                Object[] obj = (Object[]) q.getSingleResult();
050                return getBeanFromObj(obj);
051            }
052            catch (Exception e) {
053                throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
054            }
055        }
056    
057        private SLARegistrationBean getBeanFromObj(Object[] arr) {
058            SLARegistrationBean bean = new SLARegistrationBean();
059            if (arr[0] != null) {
060                bean.setNotificationMsg((String) arr[0]);
061            }
062            if (arr[1] != null) {
063                bean.setUpstreamApps((String) arr[1]);
064            }
065            if (arr[2] != null) {
066                bean.setSlaConfig((String) arr[2]);
067            }
068            if (arr[3] != null) {
069                bean.setJobData((String) arr[3]);
070            }
071            return bean;
072        }
073    
074    }