org.databene.commons.converter
Class NullSafeConverterProxy<S,T>

java.lang.Object
  org.databene.commons.converter.ConverterWrapper<S,T>
      org.databene.commons.converter.ConverterProxy<S,T>
          org.databene.commons.converter.NullSafeConverterProxy<S,T>

All Implemented Interfaces:

java.lang.Cloneable, Converter<S,T>, ThreadAware

public class NullSafeConverterProxy<S,T>
extends ConverterProxy<S,T>

Wraps another Converter and adds the feature of converting null values to a predefined value.

Created: 26.07.2007 06:59:35

Author:

Volker Bergmann

Field Summary

protected T	nullResult
protected Converter<S,T>	realConverter

Constructor Summary

NullSafeConverterProxy(Converter<S,T> realConverter, T nullResult)

Method Summary

T	convert(S sourceValue) Concerts an object of type S to an object of type T
java.lang.Class<T>	getTargetType()

Methods inherited from class org.databene.commons.converter.ConverterProxy

getSourceType

Methods inherited from class org.databene.commons.converter.ConverterWrapper

clone, isParallelizable, isThreadSafe

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.databene.commons.ThreadAware

isParallelizable, isThreadSafe

Field Detail

realConverter

protected Converter<S,T> realConverter

nullResult

protected T nullResult

Constructor Detail

NullSafeConverterProxy

public NullSafeConverterProxy(Converter<S,T> realConverter,
                              T nullResult)

Method Detail

getTargetType

public java.lang.Class<T> getTargetType()

Specified by:

getTargetType in interface Converter<S,T>

Overrides:

getTargetType in class ConverterProxy<S,T>

convert

public T convert(S sourceValue)
          throws ConversionException

Description copied from interface: Converter

Concerts an object of type S to an object of type T

Parameters:

sourceValue - the object to convert

Returns:

the converted object

Throws:

ConversionException - if the conversion fails