RCollector.java

/**
 * Copyright 2016 Nikita Koksharov
 *
 * 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.
 */
package org.redisson.api.mapreduce;

/**
 * Stores each key/value mapping during map phase of MapReduce process.
 * Later used in reduce phase.
 * 
 * 
 * @author Nikita Koksharov
 *
 * @param <K> key type
 * @param <V> value type
 */
public interface RCollector<K, V> {

    /**
     * Store key/value 
     * 
     * @param key available to reduce
     * @param value available to reduce
     */
    void emit(K key, V value);
    
}