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 */
018package org.apache.oozie.executor.jpa;
019
020import java.sql.Timestamp;
021import java.util.List;
022
023import javax.persistence.EntityManager;
024import javax.persistence.Query;
025
026import org.apache.oozie.ErrorCode;
027import org.apache.oozie.WorkflowActionBean;
028import org.apache.oozie.util.ParamChecker;
029
030public 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}