/*
* Copyright 2004-2015 the Seasar Foundation and the Others.
*
* 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 org.seasar.extension.jdbc.gen.internal.argtype;
import org.seasar.framework.util.NumberConversionUtil;
import org.seasar.framework.util.StringConversionUtil;
import org.seasar.framework.util.StringUtil;
/**
* {@link Number}を扱う{@link ArgumentType}の実装クラスです。
*
* @author taedium
* @param <T>
* {@link Number}のサブタイプ
*/
public class NumberType<T extends Number> implements ArgumentType<T> {
/** 数値を表すクラス */
protected Class<T> numberClass;
/**
*インスタンスを構築します。
*
* @param numberClass
* 数値を表すクラス
*/
public NumberType(Class<T> numberClass) {
this.numberClass = numberClass;
}
public T toObject(String value) {
if (StringUtil.isEmpty(value)) {
return null;
}
Object number = NumberConversionUtil.convertNumber(numberClass, value);
return numberClass.cast(number);
}
public String toText(T value) {
if (value == null) {
return "";
}
return StringConversionUtil.toString(value);
}
}