org.apache.giraph.utils.hashing.LongWritableFunnel.java Source code

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Here is the source code for org.apache.giraph.utils.hashing.LongWritableFunnel.java

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/*
 * 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.giraph.utils.hashing;

import com.google.common.hash.Funnel;
import com.google.common.hash.PrimitiveSink;
import org.apache.hadoop.io.LongWritable;

/**
 * Hashing strategy for LongWritable. Implemented via an enum per advice
 * in Funnel.
 *
 * @see Funnel
 */
public enum LongWritableFunnel implements Funnel<LongWritable> {
    /** singleton */
    INSTANCE;

    @Override
    public void funnel(LongWritable w, PrimitiveSink into) {
        into.putLong(w.get());
    }
}