co.cask.cdap.remote.dataset.TreeMapInstanceCreator.java Source code

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Here is the source code for co.cask.cdap.remote.dataset.TreeMapInstanceCreator.java

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/*
 * Copyright  2015 Cask Data, Inc.
 *
 * 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 co.cask.cdap.remote.dataset;

import co.cask.cdap.api.common.Bytes;
import com.google.gson.InstanceCreator;

import java.lang.reflect.Type;
import java.util.Map;
import java.util.TreeMap;

/**
 * TypeAdapter that deserializes Maps into TreeMaps, with the {@link Bytes#BYTES_COMPARATOR}.
 */
public final class TreeMapInstanceCreator implements InstanceCreator<Map<?, ?>> {
    public TreeMapInstanceCreator() {
    }

    @Override
    public Map<?, ?> createInstance(Type type) {
        return new TreeMap<>(Bytes.BYTES_COMPARATOR);
    }
}