com.vaadin.data.util.converter
Class ReverseConverter<PRESENTATION,MODEL>

java.lang.Object
  com.vaadin.data.util.converter.ReverseConverter<PRESENTATION,MODEL>

Type Parameters:

MODEL - The source type

PRESENTATION - The target type

All Implemented Interfaces:

Converter<PRESENTATION,MODEL>, Serializable

public class ReverseConverter<PRESENTATION,MODEL>
extends Object
implements Converter<PRESENTATION,MODEL>

A converter that wraps another Converter and reverses source and target types.

Since:

7.0

Version:

7.0.0.alpha3

Author:

Vaadin Ltd

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface com.vaadin.data.util.converter.Converter

Converter.ConversionException

Constructor Summary

ReverseConverter(Converter<MODEL,PRESENTATION> converter)
Creates a converter from source to target based on a converter that converts from target to source.

Method Summary

MODEL	convertToModel(PRESENTATION value, Locale locale) Converts the given value from target type to source type.
PRESENTATION	convertToPresentation(MODEL value, Locale locale) Converts the given value from source type to target type.
Class<MODEL>	getModelType() The source type of the converter.
Class<PRESENTATION>	getPresentationType() The target type of the converter.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReverseConverter

public ReverseConverter(Converter<MODEL,PRESENTATION> converter)

Creates a converter from source to target based on a converter that converts from target to source.

Parameters:

converter - The converter to use in a reverse fashion

Method Detail

convertToModel

public MODEL convertToModel(PRESENTATION value,
                            Locale locale)
                     throws Converter.ConversionException

Description copied from interface: Converter

Converts the given value from target type to source type.

A converter can optionally use locale to do the conversion.

A converter should in most cases be symmetric so chaining Converter.convertToPresentation(Object, Locale) and Converter.convertToModel(Object, Locale) should return the original value.

Specified by:

convertToModel in interface Converter<PRESENTATION,MODEL>

Parameters:

value - The value to convert, compatible with the target type. Can be null

locale - The locale to use for conversion. Can be null.

Returns:

The converted value compatible with the source type

Throws:

Converter.ConversionException - If the value could not be converted

convertToPresentation

public PRESENTATION convertToPresentation(MODEL value,
                                          Locale locale)
                                   throws Converter.ConversionException

Description copied from interface: Converter

Converts the given value from source type to target type.

A converter can optionally use locale to do the conversion.

A converter should in most cases be symmetric so chaining Converter.convertToPresentation(Object, Locale) and Converter.convertToModel(Object, Locale) should return the original value.

Specified by:

convertToPresentation in interface Converter<PRESENTATION,MODEL>

Parameters:

value - The value to convert, compatible with the target type. Can be null

locale - The locale to use for conversion. Can be null.

Returns:

The converted value compatible with the source type

Throws:

Converter.ConversionException - If the value could not be converted

getModelType

public Class<MODEL> getModelType()

Description copied from interface: Converter

The source type of the converter. Values of this type can be passed to Converter.convertToPresentation(Object, Locale).

Specified by:

getModelType in interface Converter<PRESENTATION,MODEL>

Returns:

The source type

getPresentationType

public Class<PRESENTATION> getPresentationType()

Description copied from interface: Converter

The target type of the converter. Values of this type can be passed to Converter.convertToModel(Object, Locale).

Specified by:

getPresentationType in interface Converter<PRESENTATION,MODEL>

Returns:

The target type