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    
022    import org.apache.oozie.WorkflowJobBean;
023    import org.apache.oozie.util.ParamChecker;
024    
025    /**
026     * Delete workflow job
027     *
028     */
029    public class WorkflowJobDeleteJPAExecutor implements JPAExecutor<Void>{
030    
031        private String wfJobId = null;
032    
033        public WorkflowJobDeleteJPAExecutor(String wfJobId){
034            ParamChecker.notEmpty(wfJobId, "wfJobId");
035            this.wfJobId = wfJobId;
036        }
037    
038        /* (non-Javadoc)
039         * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
040         */
041        @Override
042        public Void execute(EntityManager em) throws JPAExecutorException {
043            WorkflowJobBean job = em.find(WorkflowJobBean.class, this.wfJobId);
044            if (job != null) {
045                em.remove(job);
046            }
047            return null;
048        }
049    
050        /* (non-Javadoc)
051         * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
052         */
053        @Override
054        public String getName() {
055            return "WorkflowJobDeleteJPAExecutor";
056        }
057    
058    }