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    1   /*
    2    * Copyright 2004-2009 the Seasar Foundation and the Others.
    3    *
    4    * Licensed under the Apache License, Version 2.0 (the "License");
    5    * you may not use this file except in compliance with the License.
    6    * You may obtain a copy of the License at
    7    *
    8    *     http://www.apache.org/licenses/LICENSE-2.0
    9    *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
    13   * either express or implied. See the License for the specific language
    14   * governing permissions and limitations under the License.
    15   */
    16  package org.seasar.cubby.spi.impl;
    17
    18  import java.util.HashMap;
    19  import java.util.Map;
    20
    21  /**
    22   * 型変換のためのユーティリティクラスです。
    23   *
    24   * @author baba
    25   */
    26  class ConversionUtils {
    27
    28  	private static Map<Class<?>, Class<?>> PRIMITIVE_TO_WRAPPER_MAP = new HashMap<Class<?>, Class<?>>();
    29
    30  	static {
    31  		PRIMITIVE_TO_WRAPPER_MAP.put(Character.TYPE, Character.class);
    32  		PRIMITIVE_TO_WRAPPER_MAP.put(Byte.TYPE, Byte.class);
    33  		PRIMITIVE_TO_WRAPPER_MAP.put(Short.TYPE, Short.class);
    34  		PRIMITIVE_TO_WRAPPER_MAP.put(Integer.TYPE, Integer.class);
    35  		PRIMITIVE_TO_WRAPPER_MAP.put(Long.TYPE, Long.class);
    36  		PRIMITIVE_TO_WRAPPER_MAP.put(Double.TYPE, Double.class);
    37  		PRIMITIVE_TO_WRAPPER_MAP.put(Float.TYPE, Float.class);
    38  		PRIMITIVE_TO_WRAPPER_MAP.put(Boolean.TYPE, Boolean.class);
    39  	}
    40
    41  	/**
    42       *
    43       */
    44  	protected ConversionUtils() {
    45  	}
    46
    47  	/**
    48  	 * プリミティブの場合はラッパークラス、そうでない場合はもとのクラスを返します。
    49  	 *
    50  	 * @param clazz
    51  	 * @return {@link Class}
    52  	 */
    53  	public static Class<?> getWrapperClassIfPrimitive(final Class<?> clazz) {
    54  		if (PRIMITIVE_TO_WRAPPER_MAP.containsKey(clazz)) {
    55  			return PRIMITIVE_TO_WRAPPER_MAP.get(clazz);
    56  		} else {
    57  			return clazz;
    58  		}
    59  	}
    60
    61  }