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.util.List;
022
023import javax.persistence.EntityManager;
024import javax.persistence.Query;
025
026import org.apache.oozie.ErrorCode;
027
028/**
029 * Load the list of WorkflowJob with the passed in coordinator parentId.  The parent id field for a workflow with a coordinator
030 * parent is the id of the coordinator action, not the coordinator job.  So, we have to use a wildcard to match (coordinator action
031 * ids start with the coordinator job id).
032 */
033public class WorkflowJobsGetFromCoordParentIdJPAExecutor implements JPAExecutor<List<String>> {
034
035    private String parentId;
036    private int limit;
037    private int offset;
038
039    public WorkflowJobsGetFromCoordParentIdJPAExecutor(String parentId, int limit) {
040        this(parentId, 0, limit);
041    }
042
043    public WorkflowJobsGetFromCoordParentIdJPAExecutor(String parentId, int offset, int limit) {
044        this.parentId = parentId;
045        this.offset = offset;
046        this.limit = limit;
047    }
048
049    @Override
050    public String getName() {
051        return "WorkflowJobsGetFromCoordParentIdJPAExecutor";
052    }
053
054    @Override
055    @SuppressWarnings("unchecked")
056    public List<String> execute(EntityManager em) throws JPAExecutorException {
057        List<String> workflows = null;
058        try {
059            Query jobQ = em.createNamedQuery("GET_WORKFLOWS_WITH_COORD_PARENT_ID");
060            jobQ.setParameter("parentId", parentId + "%");  // The '%' is the wildcard
061            jobQ.setMaxResults(limit);
062            jobQ.setFirstResult(offset);
063            workflows = jobQ.getResultList();
064        }
065        catch (Exception e) {
066            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
067        }
068        return workflows;
069    }
070
071}