001    /**
002     * Copyright (c) 2010 Yahoo! Inc. All rights reserved.
003     * Licensed under the Apache License, Version 2.0 (the "License");
004     * you may not use this file except in compliance with the License.
005     * You may obtain a copy of the License at
006     *
007     *   http://www.apache.org/licenses/LICENSE-2.0
008     *
009     *  Unless required by applicable law or agreed to in writing, software
010     *  distributed under the License is distributed on an "AS IS" BASIS,
011     *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012     *  See the License for the specific language governing permissions and
013     *  limitations under the License. See accompanying LICENSE file.
014     */
015    package org.apache.oozie.executor.jpa;
016    
017    import javax.persistence.EntityManager;
018    
019    import org.apache.oozie.WorkflowJobBean;
020    import org.apache.oozie.util.ParamChecker;
021    
022    /**
023     * Delete workflow job
024     *
025     */
026    public class WorkflowJobDeleteJPAExecutor implements JPAExecutor<Void>{
027    
028        private String wfJobId = null;
029    
030        public WorkflowJobDeleteJPAExecutor(String wfJobId){
031            ParamChecker.notEmpty(wfJobId, "wfJobId");
032            this.wfJobId = wfJobId;
033        }
034    
035        /* (non-Javadoc)
036         * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
037         */
038        @Override
039        public Void execute(EntityManager em) throws JPAExecutorException {
040            WorkflowJobBean job = em.find(WorkflowJobBean.class, this.wfJobId);
041            if (job != null) {
042                em.remove(job);
043            }
044            return null;
045        }
046    
047        /* (non-Javadoc)
048         * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
049         */
050        @Override
051        public String getName() {
052            return "WorkflowJobDeleteJPAExecutor";
053        }
054    
055    }