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Central module for Tapestry, containing interfaces to the Java
Servlet API and all core services and components.
// Copyright 2009 The Apache Software Foundation
//
// 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.apache.tapestry5.internal.translator;
import java.text.DecimalFormatSymbols;
import java.text.ParseException;
/**
* Base class for parsing/formatting BigInteger and BigDecimal.
*
* @since 5.1.0.1
*/
public abstract class BigTypesFormatter implements NumericFormatter
{
protected final DecimalFormatSymbols symbols;
public BigTypesFormatter(DecimalFormatSymbols symbols)
{
this.symbols = symbols;
}
protected String toString(char ch)
{
return String.valueOf(ch);
}
public String toClient(Number value)
{
String normal = value.toString();
// When formatting integers, we don't use the grouping seperator.
return normal.replace('-', symbols.getMinusSign()).replace('.', symbols.getDecimalSeparator());
}
public Number parse(String clientValue) throws ParseException
{
String noGroups = clientValue.replace(toString(symbols.getGroupingSeparator()), "");
String fixedNeg = noGroups.replace(symbols.getMinusSign(), '-');
String fixedDec = fixedNeg.replace(symbols.getDecimalSeparator(), '.');
try
{
return parseConvertedValue(fixedDec);
}
catch (NumberFormatException ex)
{
throw new ParseException(ex.getMessage(), 0);
}
}
protected abstract Number parseConvertedValue(String converted);
}