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