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.List;
022    
023    import javax.persistence.EntityManager;
024    import javax.persistence.Query;
025    
026    import org.apache.oozie.ErrorCode;
027    import org.apache.oozie.WorkflowActionBean;
028    import org.apache.oozie.util.ParamChecker;
029    
030    public class WorkflowActionsGetPendingJPAExecutor implements JPAExecutor<List<WorkflowActionBean>>{
031        private long minimumPendingAgeSecs = 0;
032    
033        public WorkflowActionsGetPendingJPAExecutor(final long minimumPendingAgeSecs) {
034            ParamChecker.notNull(minimumPendingAgeSecs, "minimumPendingAgeSecs");
035            this.minimumPendingAgeSecs = minimumPendingAgeSecs;
036        }
037    
038        /* (non-Javadoc)
039         * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
040         */
041        @Override
042        public String getName() {
043            return "WorkflowActionsGetPendingJPAExecutor";
044        }
045    
046        /**
047         * Load All the actions that are pending for more than given time.
048         *
049         * @param minimumPendingAgeSecs Minimum Pending age in seconds
050         * @return List of action beans
051         * @throws JPAExecutorException
052         */
053        @Override
054        public List<WorkflowActionBean> execute(EntityManager em) throws JPAExecutorException {
055            Timestamp ts = new Timestamp(System.currentTimeMillis() - minimumPendingAgeSecs * 1000);
056            List<WorkflowActionBean> actionList = null;
057            try {
058                Query q = em.createNamedQuery("GET_PENDING_ACTIONS");
059                q.setParameter("pendingAge", ts);
060                actionList = q.getResultList();
061            }
062            catch (IllegalStateException e) {
063                throw new JPAExecutorException(ErrorCode.E0601, e.getMessage(), e);
064            }
065            return actionList;
066        }
067    }