org.springframework.core.convert.support

Class NumberToNumberConverterFactory

java.lang.Object

org.springframework.core.convert.support.NumberToNumberConverterFactory

All Implemented Interfaces:

ConditionalConverter, ConverterFactory<java.lang.Number,java.lang.Number>

final class NumberToNumberConverterFactory
extends java.lang.Object
implements ConverterFactory<java.lang.Number,java.lang.Number>, ConditionalConverter

Converts from any JDK-standard Number implementation to any other JDK-standard Number implementation.

Support Number classes including Byte, Short, Integer, Float, Double, Long, BigInteger, BigDecimal. This class delegates to NumberUtils.convertNumberToTargetClass(Number, Class) to perform the conversion.

Since:

3.0

Author:

Keith Donald

See Also:

Byte, Short, Integer, Long, BigInteger, Float, Double, BigDecimal, NumberUtils

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private static class	NumberToNumberConverterFactory.NumberToNumber<T extends java.lang.Number>

Constructor Summary

Constructors

Constructor and Description
NumberToNumberConverterFactory()

Method Summary

Modifier and Type	Method and Description
<T extends java.lang.Number> Converter<java.lang.Number,T>	getConverter(java.lang.Class<T> targetType) Get the converter to convert from S to target type T, where T is also an instance of R.
boolean	matches(TypeDescriptor sourceType, TypeDescriptor targetType) Should the conversion from sourceType to targetType currently under consideration be selected?

Methods inherited from class java.lang.Object

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

Constructor Detail

NumberToNumberConverterFactory

NumberToNumberConverterFactory()

Method Detail

getConverter

public <T extends java.lang.Number> Converter<java.lang.Number,T> getConverter(java.lang.Class<T> targetType)

Description copied from interface: ConverterFactory

Get the converter to convert from S to target type T, where T is also an instance of R.

Specified by:

getConverter in interface ConverterFactory<java.lang.Number,java.lang.Number>

Type Parameters:

T - the target type

Parameters:

targetType - the target type to convert to

Returns:

A converter from S to T

matches

public boolean matches(TypeDescriptor sourceType,
                       TypeDescriptor targetType)

Description copied from interface: ConditionalConverter

Should the conversion from sourceType to targetType currently under consideration be selected?

Specified by:

matches in interface ConditionalConverter

Parameters:

sourceType - the type descriptor of the field we are converting from

targetType - the type descriptor of the field we are converting to

Returns:

true if conversion should be performed, false otherwise