/**
* Copyright (C) 2015 Valkyrie RCP
*
* 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.valkyriercp.binding.format.support;
import org.springframework.util.NumberUtils;
import org.valkyriercp.binding.format.InvalidFormatException;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.text.NumberFormat;
/**
* Converts from various <code>Number</code> specializations to <code>String</code> and back.
*
* @author Keith Donald
*/
public class NumberFormatter extends AbstractFormatter {
private NumberFormat numberFormat;
/**
* Default constructor. The formatter will use "toString" when formatting a value and "valueOf" when parsing a
* value.
*/
public NumberFormatter() {
}
/**
* Create a new number formatter.
* @param numberFormat the number format to use
*/
public NumberFormatter(NumberFormat numberFormat) {
this.numberFormat = numberFormat;
}
/**
* Create a new number formatter.
* @param numberFormat the number format to use
* @param allowEmpty should this formatter allow empty input arguments?
*/
public NumberFormatter(NumberFormat numberFormat, boolean allowEmpty) {
super(allowEmpty);
this.numberFormat = numberFormat;
}
protected String doFormatValue(Object number) {
if (this.numberFormat != null) {
// use NumberFormat for rendering value
return this.numberFormat.format(number);
} else {
// use toString method for rendering value
return number.toString();
}
}
protected Object doParseValue(String text, Class targetClass) throws IllegalArgumentException {
// use given NumberFormat for parsing text
if (this.numberFormat != null) {
return NumberUtils.parseNumber(text, targetClass, this.numberFormat);
}
// use default valueOf methods for parsing text
else {
return NumberUtils.parseNumber(text, targetClass);
}
}
// convenience methods
public Byte parseByte(String formattedString) throws InvalidFormatException {
return (Byte) parseValue(formattedString, Byte.class);
}
public Short parseShort(String formattedString) throws InvalidFormatException {
return (Short) parseValue(formattedString, Short.class);
}
public Integer parseInteger(String formattedString) throws InvalidFormatException {
return (Integer) parseValue(formattedString, Integer.class);
}
public Long parseLong(String formattedString) throws InvalidFormatException {
return (Long) parseValue(formattedString, Long.class);
}
public Float parseFloat(String formattedString) throws InvalidFormatException {
return (Float) parseValue(formattedString, Float.class);
}
public Double parseDouble(String formattedString) throws InvalidFormatException {
return (Double) parseValue(formattedString, Double.class);
}
public BigInteger parseBigInteger(String formattedString) throws InvalidFormatException {
return (BigInteger) parseValue(formattedString, BigInteger.class);
}
public BigDecimal parseBigDecimal(String formattedString) throws InvalidFormatException {
return (BigDecimal) parseValue(formattedString, BigDecimal.class);
}
}