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    package org.apache.oozie.executor.jpa;
019    
020    import javax.persistence.EntityManager;
021    import javax.persistence.Query;
022    
023    import org.apache.oozie.ErrorCode;
024    import org.apache.oozie.util.ParamChecker;
025    
026    /**
027     * Retrieve the name of user submitting coordinator
028     *
029     */
030    public class CoordinatorJobGetForUserJPAExecutor implements JPAExecutor<String> {
031    
032        private String wfJobId = null;
033    
034        public CoordinatorJobGetForUserJPAExecutor(String wfJobId) {
035            ParamChecker.notNull(wfJobId, "wfJobId");
036            this.wfJobId = wfJobId;
037        }
038    
039        /*
040         * (non-Javadoc)
041         *
042         * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
043         */
044        @Override
045        public String getName() {
046            return "CoordinatorJobGetForUserJPAExecutor";
047        }
048    
049        /*
050         * (non-Javadoc)
051         *
052         * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.
053         * EntityManager)
054         */
055        @Override
056        public String execute(EntityManager em) throws JPAExecutorException {
057            try {
058                Query q = em.createNamedQuery("GET_COORD_JOB_FOR_USER");
059                q.setParameter("id", wfJobId);
060                String user = (String) q.getSingleResult();
061                return user;
062            }
063            catch (Exception e) {
064                throw new JPAExecutorException(ErrorCode.E0603, e.getMessage(), e);
065            }
066        }
067    }