src/java/org/apache/hadoop/mapred/JobChangeEvent.java

/**
 * 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.hadoop.mapred;

/**
 * {@link JobChangeEvent} is used to capture state changes in a job. A job can 
 * change its state w.r.t priority, progress, run-state etc.
 */
abstract class JobChangeEvent {
  private JobInProgress jip;
  
  JobChangeEvent(JobInProgress jip) {
    this.jip = jip;
  }
  
  /**
   * Get the job object for which the change is reported
   */
  JobInProgress getJobInProgress() {
    return jip;
  }
}