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.List;
023    
024    import javax.persistence.EntityManager;
025    import javax.persistence.Query;
026    
027    import org.apache.oozie.ErrorCode;
028    import org.apache.oozie.util.ParamChecker;
029    
030    public class CoordActionsGetReadyGroupbyJobIDJPAExecutor implements JPAExecutor<List<String>>{
031        private long checkAgeSecs = 0;
032    
033        public CoordActionsGetReadyGroupbyJobIDJPAExecutor(final long checkAgeSecs) {
034            ParamChecker.notNull(checkAgeSecs, "checkAgeSecs");
035            this.checkAgeSecs = checkAgeSecs;
036        }
037    
038        /* (non-Javadoc)
039         * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
040         */
041        @Override
042        public String getName() {
043            return "CoordActionsGetReadyGroupbyJobIDJPAExecutor";
044        }
045    
046        /* (non-Javadoc)
047         * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
048         */
049        @Override
050        public List<String> execute(EntityManager em) throws JPAExecutorException {
051            List<String> jobids = new ArrayList<String>();
052            try {
053                Query q = em.createNamedQuery("GET_READY_ACTIONS_GROUP_BY_JOBID");
054                Timestamp ts = new Timestamp(System.currentTimeMillis() - checkAgeSecs * 1000);
055                q.setParameter(1, ts);
056                List<Object[]> list = q.getResultList();
057    
058                for (Object[] arr : list) {
059                    if (arr != null && arr[0] != null) {
060                        jobids.add((String) arr[0]);
061                    }
062                }
063    
064                return jobids;
065            }
066            catch (IllegalStateException e) {
067                throw new JPAExecutorException(ErrorCode.E0601, e.getMessage(), e);
068            }
069        }
070    
071    }