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.WorkflowActionBean; 020 import org.apache.oozie.util.ParamChecker; 021 022 public class WorkflowActionDeleteJPAExecutor implements JPAExecutor<Void> { 023 024 private final String wfActionId; 025 026 /** 027 * @param wfActionId 028 */ 029 public WorkflowActionDeleteJPAExecutor(String wfActionId) { 030 ParamChecker.notEmpty(wfActionId, "ActionID"); 031 this.wfActionId = wfActionId; 032 } 033 034 /* (non-Javadoc) 035 * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager) 036 */ 037 @Override 038 public Void execute(EntityManager em) throws JPAExecutorException { 039 WorkflowActionBean action = em.find(WorkflowActionBean.class, this.wfActionId); 040 if (action != null) { 041 em.remove(action); 042 } 043 return null; 044 } 045 046 /* (non-Javadoc) 047 * @see org.apache.oozie.executor.jpa.JPAExecutor#getName() 048 */ 049 @Override 050 public String getName() { 051 return "WorkflowActionDeleteJPAExecutor"; 052 } 053 }