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 javax.persistence.EntityManager;
022import javax.persistence.Query;
023
024import org.apache.oozie.ErrorCode;
025import org.apache.oozie.util.ParamChecker;
026
027/**
028 *
029 * Retrieve the name of user submitting workflow
030 */
031public class WorkflowJobGetForUserJPAExecutor implements JPAExecutor<String> {
032
033    private String wfJobId = null;
034
035    public WorkflowJobGetForUserJPAExecutor(String wfJobId) {
036        ParamChecker.notNull(wfJobId, "wfJobId");
037        this.wfJobId = wfJobId;
038    }
039
040    /*
041     * (non-Javadoc)
042     *
043     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
044     */
045    @Override
046    public String getName() {
047        return "WorkflowJobGetForUserJPAExecutor";
048    }
049
050    /*
051     * (non-Javadoc)
052     *
053     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.
054     * EntityManager)
055     */
056    @Override
057    public String execute(EntityManager em) throws JPAExecutorException {
058        try {
059            Query q = em.createNamedQuery("GET_WORKFLOW_FOR_USER");
060            q.setParameter("id", wfJobId);
061            String user = (String) q.getSingleResult();
062            return user;
063        }
064        catch (Exception e) {
065            throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
066        }
067    }
068}