bigdecimalconverter.java

Wicket一个开发Java Web应用程序框架。它使得开发web应用程序变得容易而轻松。 Wicket利用一个POJO data beans组件使得它可以与任何持久层技术相结合。

/*
 * 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.wicket.util.convert.converters;

import java.math.BigDecimal;
import java.text.NumberFormat;
import java.util.Locale;

/**
 * BigDecimal converter
 * 
 * see IConverter
 * 
 */
public class BigDecimalConverter extends AbstractDecimalConverter
{
	private static final long serialVersionUID = 1L;

	protected Class getTargetType()
	{
		return BigDecimal.class;
	}

	public Object convertToObject(String value, Locale locale)
	{
		if (value == null || value.trim().equals(""))
			return null;

		NumberFormat format = getNumberFormat(locale);
		try
		{
			Number number = format.parse(value);
			if (number instanceof BigDecimal)
			{
				return number;
			}
			else if (number instanceof Double)
			{
				return new BigDecimal(number.doubleValue());
			}
			else if (number instanceof Long)
			{
				return new BigDecimal(number.longValue());
			}
			else if (number instanceof Float)
			{
				return new BigDecimal(number.floatValue());
			}
			else if (number instanceof Integer)
			{
				return new BigDecimal(number.intValue());
			}
			else
			{
				return new BigDecimal(value);
			}
		}
		catch (Exception e)
		{
			throw newConversionException("Cannot parse '" + value + "' using format " + format,
				value, locale).setFormat(format);
		}
	}
}