org.apache.giraph.types.ops.MapTypeOps.java Source code

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Here is the source code for org.apache.giraph.types.ops.MapTypeOps.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.types.ops;

import org.apache.hadoop.io.MapWritable;

/** TypeOps implementation for working with MapWritable type */
public enum MapTypeOps implements TypeOps<MapWritable> {
    /** Singleton instance */
    INSTANCE();

    @Override
    public Class<MapWritable> getTypeClass() {
        return MapWritable.class;
    }

    @Override
    public MapWritable create() {
        return new MapWritable();
    }

    @Override
    public MapWritable createCopy(MapWritable from) {
        return new MapWritable(from);
    }

    @Override
    public void set(MapWritable to, MapWritable from) {
        to.clear();
        to.putAll(from);
    }
}