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.util.List;
021
022import javax.persistence.EntityManager;
023import javax.persistence.Query;
024
025import org.apache.oozie.ErrorCode;
026
027/**
028 * Load the list of WorkflowJob with the passed in workflow parentId
029 */
030public class WorkflowJobsGetFromWorkflowParentIdJPAExecutor implements JPAExecutor<List<String>> {
031
032    private String parentId;
033    private int limit;
034    private int offset;
035
036    public WorkflowJobsGetFromWorkflowParentIdJPAExecutor(String parentId, int limit) {
037        this(parentId, 0, limit);
038    }
039
040    public WorkflowJobsGetFromWorkflowParentIdJPAExecutor(String parentId, int offset, int limit) {
041        this.parentId = parentId;
042        this.offset = offset;
043        this.limit = limit;
044    }
045
046    @Override
047    public String getName() {
048        return "WorkflowJobsGetFromWorkflowParentIdJPAExecutor";
049    }
050
051    @Override
052    @SuppressWarnings("unchecked")
053    public List<String> execute(EntityManager em) throws JPAExecutorException {
054        List<String> workflows = null;
055        try {
056            Query jobQ = em.createNamedQuery("GET_WORKFLOWS_WITH_WORKFLOW_PARENT_ID");
057            jobQ.setParameter("parentId", parentId);
058            jobQ.setMaxResults(limit);
059            jobQ.setFirstResult(offset);
060            workflows = jobQ.getResultList();
061        }
062        catch (Exception e) {
063            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
064        }
065        return workflows;
066    }
067
068}