StatsCollectorMergeable.java

package com.linkedin.databus.core.monitoring.mbean;
/*
 *
 * Copyright 2013 LinkedIn Corp. All rights reserved
 *
 * Licensed 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.
 *
*/


import java.util.List;

/**
 * 
 * @author snagaraj
 *  Stats collector objects that can be merged and reset 
 *  The purpose of this interface is to define methods for stats objects at a physical source (database) level in relay,bootstrap and client 
 *  components of databus2
 */

public interface StatsCollectorMergeable<T> 
{
	/** Initialize; reset internal state */
	public void reset();
	
	/** combine internal state with external object of same type **/
	public void merge(T obj);
	
	/** reset and merge a list of T's **/
	public void resetAndMerge(List<T> objList);
	
}