/**
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.oozie.executor.jpa;

import javax.persistence.EntityManager;

import org.apache.oozie.WorkflowJobBean;
import org.apache.oozie.util.ParamChecker;

/**
 * Delete workflow job
 *
 */
public class WorkflowJobDeleteJPAExecutor implements JPAExecutor<Void>{

    private String wfJobId = null;

    public WorkflowJobDeleteJPAExecutor(String wfJobId){
        ParamChecker.notEmpty(wfJobId, "wfJobId");
        this.wfJobId = wfJobId;
    }

    /* (non-Javadoc)
     * @see org.apache.oozie.executor.jpa.JPAExecutor#execute(javax.persistence.EntityManager)
     */
    @Override
    public Void execute(EntityManager em) throws JPAExecutorException {
        WorkflowJobBean job = em.find(WorkflowJobBean.class, this.wfJobId);
        if (job != null) {
            em.remove(job);
        }
        return null;
    }

    /* (non-Javadoc)
     * @see org.apache.oozie.executor.jpa.JPAExecutor#getName()
     */
    @Override
    public String getName() {
        return "WorkflowJobDeleteJPAExecutor";
    }

}