net.codestory.http.convert.PrimitiveDefaultValues Maven / Gradle / Ivy

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/**
 * Copyright (C) 2013-2014 [email protected]
 *
 * 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 net.codestory.http.convert;

import java.util.*;

public enum PrimitiveDefaultValues {
  INSTANCE;

  private final Map, Object> defaults;

  PrimitiveDefaultValues() {
    Map, Object> map = new HashMap<>();
    put(map, boolean.class, false);
    put(map, char.class, '\0');
    put(map, byte.class, (byte) 0);
    put(map, short.class, (short) 0);
    put(map, int.class, 0);
    put(map, long.class, 0L);
    put(map, float.class, 0f);
    put(map, double.class, 0d);
    defaults = Collections.unmodifiableMap(map);
  }

  private  void put(Map, Object> map, Class type, T value) {
    map.put(type, value);
  }

  public  T get(Class type) {
    return (T) defaults.get(type);
  }
}