net.sourceforge.stripes.validation

Class BigIntegerTypeConverter

java.lang.Object

net.sourceforge.stripes.validation.NumberTypeConverterSupport

net.sourceforge.stripes.validation.BigIntegerTypeConverter

All Implemented Interfaces:

TypeConverter<BigInteger>

public class BigIntegerTypeConverter
extends NumberTypeConverterSupport
implements TypeConverter<BigInteger>

Type converter for converting localized strings into BigInteger numbers without any loss of magnitude or precision. Relies on NumberFormat.getInstance() returning a decimal format, and will warn if that is not the case, as it will likely lead to loss of information.

Since:

Stripes 1.1.2

Author:

Tim Fennell

Constructor Summary

Constructors

Constructor and Description
BigIntegerTypeConverter()

Method Summary

Methods

Modifier and Type	Method and Description
BigInteger	convert(String input, Class<? extends BigInteger> targetType, Collection<ValidationError> errors) Implemented to parse a BigDecimal and then remove any fractional part and return a BigInteger.
protected NumberFormat[]	getNumberFormats() Uses the parent implementation to fetch a number format, but then downcasts it to a decimal format and ensures that a BigDecimal is parsed instead of a Long or Double.

Methods inherited from class net.sourceforge.stripes.validation.NumberTypeConverterSupport

getLocale, parse, preprocess, setLocale

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface net.sourceforge.stripes.validation.TypeConverter

setLocale

Constructor Detail

BigIntegerTypeConverter

public BigIntegerTypeConverter()

Method Detail

getNumberFormats

protected NumberFormat[] getNumberFormats()

Uses the parent implementation to fetch a number format, but then downcasts it to a decimal format and ensures that a BigDecimal is parsed instead of a Long or Double.

Overrides:

getNumberFormats in class NumberTypeConverterSupport

Returns:

one or more NumberFormats to use in parsing numbers

convert

public BigInteger convert(String input,
                 Class<? extends BigInteger> targetType,
                 Collection<ValidationError> errors)

Implemented to parse a BigDecimal and then remove any fractional part and return a BigInteger.

Specified by:

convert in interface TypeConverter<BigInteger>

Parameters:

input - the String being converted

targetType - the Class representing the type of the property to which the return value of the conversion will be assigned. In many cases this can be ignored as converters will return a single type more often than not.

errors - an empty collection of validation errors that should be populated by the converter for any errors that occur during validation that are user input related.

Returns:

T an instance of the converted type, or null if the input cannot be converted