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.command; 016 017 import org.apache.oozie.client.Job; 018 019 /** 020 * This is transition Base commands for all the jobs. 021 */ 022 public abstract class KillTransitionXCommand extends TransitionXCommand<Void> { 023 024 public KillTransitionXCommand(String name, String type, int priority) { 025 super(name, type, priority); 026 } 027 028 public abstract void killChildren() throws CommandException; 029 030 /* (non-Javadoc) 031 * @see org.apache.oozie.command.TransitionXCommand#transitToNext() 032 */ 033 @Override 034 public final void transitToNext() { 035 if (job == null) { 036 job = this.getJob(); 037 } 038 job.setStatus(Job.Status.KILLED); 039 job.setPending(); 040 } 041 042 /* (non-Javadoc) 043 * @see org.apache.oozie.command.TransitionXCommand#execute() 044 */ 045 @Override 046 protected Void execute() throws CommandException { 047 try { 048 transitToNext(); 049 killChildren(); 050 updateJob(); 051 } 052 finally { 053 notifyParent(); 054 } 055 return null; 056 } 057 }