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.sql.Timestamp;
021    import java.util.ArrayList;
022    import java.util.Date;
023    import java.util.List;
024    
025    import javax.persistence.EntityManager;
026    import javax.persistence.Query;
027    
028    import org.apache.oozie.CoordinatorJobBean;
029    import org.apache.oozie.ErrorCode;
030    import org.apache.oozie.util.ParamChecker;
031    
032    /**
033     * JPA command to get coordinator jobs which are qualify for Materialization.
034     */
035    public class CoordJobsToBeMaterializedJPAExecutor implements JPAExecutor<List<CoordinatorJobBean>> {
036    
037        private Date dateInput;
038        private int limit;
039        private List<CoordinatorJobBean> jobList;
040    
041        /**
042         * @param date
043         * @param limit
044         */
045        public CoordJobsToBeMaterializedJPAExecutor(Date date, int limit) {
046            ParamChecker.notNull(date, "Coord Job Materialization Date");
047            this.dateInput = date;
048            this.limit = limit;
049            jobList = new ArrayList<CoordinatorJobBean>();
050        }
051    
052        /* (non-Javadoc)
053         * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
054         */
055        @SuppressWarnings("unchecked")
056        @Override
057        public List<CoordinatorJobBean> execute(EntityManager em) throws JPAExecutorException {
058            try {
059                Query q = em.createNamedQuery("GET_COORD_JOBS_OLDER_THAN");
060                q.setParameter("matTime", new Timestamp(this.dateInput.getTime()));
061                if (limit > 0) {
062                    q.setMaxResults(limit);
063                }
064    
065                List<CoordinatorJobBean> cjBeans = q.getResultList();
066                // copy results to a new object
067                for (CoordinatorJobBean j : cjBeans) {
068                    jobList.add(j);
069                }
070            }
071            catch (IllegalStateException e) {
072                throw new JPAExecutorException(ErrorCode.E0601, e.getMessage(), e);
073            }
074            return jobList;
075        }
076    
077        @Override
078        public String getName() {
079            return "CoordJobsToBeMaterializedJPAExecutor";
080        }
081    
082        /**
083         * @return the dateInput
084         */
085        public Date getDateInput() {
086            return dateInput;
087        }
088    
089        /**
090         * @param dateInput the dateInput to set
091         */
092        public void setDateInput(Date dateInput) {
093            this.dateInput = dateInput;
094        }
095    
096        /**
097         * @return the limit
098         */
099        public int getLimit() {
100            return limit;
101        }
102    
103        /**
104         * @param limit the limit to set
105         */
106        public void setLimit(int limit) {
107            this.limit = limit;
108        }
109    }