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
019package org.apache.oozie.executor.jpa;
020
021import java.sql.Timestamp;
022import java.util.ArrayList;
023import java.util.List;
024
025import javax.persistence.EntityManager;
026import javax.persistence.Query;
027
028import org.apache.oozie.CoordinatorActionBean;
029import org.apache.oozie.ErrorCode;
030import org.apache.oozie.client.CoordinatorAction;
031import org.apache.oozie.util.DateUtils;
032import org.apache.oozie.util.ParamChecker;
033
034/**
035 * Load coordinator actions in READY state for a coordinator job.
036 */
037public class CoordJobGetReadyActionsJPAExecutor implements JPAExecutor<List<CoordinatorActionBean>> {
038
039    private String coordJobId = null;
040    private String executionOrder = null;
041
042    public CoordJobGetReadyActionsJPAExecutor(String coordJobId, String executionOrder) {
043        ParamChecker.notNull(coordJobId, "coordJobId");
044        this.coordJobId = coordJobId;
045        this.executionOrder = executionOrder;
046    }
047
048    @Override
049    public String getName() {
050        return "CoordJobGetReadyActionsJPAExecutor";
051    }
052
053    @Override
054    @SuppressWarnings("unchecked")
055    public List<CoordinatorActionBean> execute(EntityManager em) throws JPAExecutorException {
056        List<CoordinatorActionBean> actionBeans = null;
057        try {
058            Query q;
059            // check if executionOrder is FIFO, LIFO, LAST_ONLY, or NONE
060            if (executionOrder.equalsIgnoreCase("FIFO")) {
061                q = em.createNamedQuery("GET_COORD_ACTIONS_FOR_JOB_FIFO");
062            }
063            else {      // LIFO, LAST_ONLY, or NONE
064                q = em.createNamedQuery("GET_COORD_ACTIONS_FOR_JOB_LIFO");
065            }
066            q.setParameter("jobId", coordJobId);
067
068            List<Object[]> objectArrList = q.getResultList();
069            actionBeans = new ArrayList<CoordinatorActionBean>();
070            for (Object[] arr : objectArrList) {
071                CoordinatorActionBean caa = getBeanForCoordinatorActionFromArray(arr);
072                actionBeans.add(caa);
073            }
074            return actionBeans;
075        }
076        catch (Exception e) {
077            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
078        }
079    }
080
081    private CoordinatorActionBean getBeanForCoordinatorActionFromArray(Object arr[]) {
082        CoordinatorActionBean bean = new CoordinatorActionBean();
083        if (arr[0] != null) {
084            bean.setId((String) arr[0]);
085        }
086        if (arr[1] != null) {
087            bean.setActionNumber((Integer) arr[1]);
088        }
089        if (arr[2] != null) {
090            bean.setJobId((String) arr[2]);
091        }
092        if (arr[3] != null) {
093            bean.setStatus(CoordinatorAction.Status.valueOf((String) arr[3]));
094        }
095        if (arr[4] != null) {
096            bean.setPending((Integer) arr[4]);
097        }
098        if (arr[5] != null) {
099            bean.setNominalTime(DateUtils.toDate((Timestamp) arr[5]));
100        }
101        if (arr[6] != null) {
102            bean.setCreatedTime(DateUtils.toDate((Timestamp) arr[6]));
103        }
104        return bean;
105    }
106
107}