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Data Store

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package com.jparams.store.index.reducer;

import java.util.List;

import com.jparams.store.index.Element;

/**
 * Reduce all values matching the same key
 *
 * @param  key
 * @param  value
 */
@FunctionalInterface
public interface Reducer
{
    /**
     * Reduce values matched for the same key
     *
     * @param key      key for values
     * @param elements elements to reduce
     */
    void reduce(K key, List> elements);
}