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 workflow parentId
030 */
031public class WorkflowJobsGetFromWorkflowParentIdJPAExecutor implements JPAExecutor<List<String>> {
032
033    private String parentId;
034    private int limit;
035    private int offset;
036
037    public WorkflowJobsGetFromWorkflowParentIdJPAExecutor(String parentId, int limit) {
038        this(parentId, 0, limit);
039    }
040
041    public WorkflowJobsGetFromWorkflowParentIdJPAExecutor(String parentId, int offset, int limit) {
042        this.parentId = parentId;
043        this.offset = offset;
044        this.limit = limit;
045    }
046
047    @Override
048    public String getName() {
049        return "WorkflowJobsGetFromWorkflowParentIdJPAExecutor";
050    }
051
052    @Override
053    @SuppressWarnings("unchecked")
054    public List<String> execute(EntityManager em) throws JPAExecutorException {
055        List<String> workflows = null;
056        try {
057            Query jobQ = em.createNamedQuery("GET_WORKFLOWS_WITH_WORKFLOW_PARENT_ID");
058            jobQ.setParameter("parentId", parentId);
059            jobQ.setMaxResults(limit);
060            jobQ.setFirstResult(offset);
061            workflows = jobQ.getResultList();
062        }
063        catch (Exception e) {
064            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
065        }
066        return workflows;
067    }
068
069}