IReducer.java

package com.taobao.top.analysis.statistics.reduce;

import java.io.Serializable;
import java.util.Map;

import com.taobao.top.analysis.statistics.data.ReportEntry;
/**
 * 
 * @author zhudi
 * mapper操作生成的key和value会通过调用这个方法聚合
 *
 * @param <T>
 */
public interface IReducer extends Cloneable,Serializable {
	
	public enum ReduceType
	{
		DEEP_MERGE("deep"),
		SHALLOW_MERGE("shallow");
		
		String v;
		
		ReduceType(String value)
		{
			this.v = value;
		}
		
		@Override
		public String toString() {
			return v;
		}
	}
	
	
	/**
	 * 聚合
	 * @param entry
	 * @param key
	 * @param value
	 * @param result
	 */
	public void reducer(ReportEntry entry,String key,Object value,Map<String, Object> result,ReduceType rs);
	

}