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com.vaadin.data.util.converter.
Class AbstractStringToNumberConverter<T>
- java.lang.Object
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- com.vaadin.data.util.converter.AbstractStringToNumberConverter<T>
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All Implemented Interfaces:
Converter<String,T>,SerializableDirect Known Subclasses:
StringToBigDecimalConverter,StringToBigIntegerConverter,StringToByteConverter,StringToDoubleConverter,StringToFloatConverter,StringToIntegerConverter,StringToLongConverter,StringToShortConverterpublic abstract class AbstractStringToNumberConverter<T> extends Object implements Converter<String,T>A converter that converts from the number type T to
Stringand back. Uses the given locale andNumberFormatfor formatting and parsing. Automatically trims the input string, removing any leading and trailing white space.Override and overwrite
getFormat(Locale)to use a different format.Since:
7.1
Author:
Vaadin Ltd
See Also:
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Nested Class Summary
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Nested classes/interfaces inherited from interface com.vaadin.data.util.converter.Converter
Converter.ConversionException
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Constructor Summary
Constructors Constructor Description AbstractStringToNumberConverter()
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Method Summary
All Methods Modifier and Type Method Description protected NumberconvertToNumber(String value, Class<? extends Number> targetType, Locale locale)Convert the value to a Number using the given locale and
getFormat(Locale).StringconvertToPresentation(T value, Class<? extends String> targetType, Locale locale)Converts the given value from source type to target type.
protected NumberFormatgetFormat(Locale locale)Returns the format used by
#convertToPresentation(Object, Locale)and#convertToModel(Object, Locale).Class<String>getPresentationType()The target type of the converter.
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Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
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Methods inherited from interface com.vaadin.data.util.converter.Converter
convertToModel, getModelType
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Method Detail
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getFormat
protected NumberFormat getFormat(Locale locale)Returns the format used by
#convertToPresentation(Object, Locale)and#convertToModel(Object, Locale).Parameters:
locale- The locale to useReturns:
A NumberFormat instance
Since:
7.1
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convertToNumber
protected Number convertToNumber(String value, Class<? extends Number> targetType, Locale locale) throws Converter.ConversionExceptionConvert the value to a Number using the given locale and
getFormat(Locale).Parameters:
value- The value to convertlocale- The locale to use for conversionReturns:
The converted value
Throws:
Converter.ConversionException- If there was a problem converting the valueSince:
7.1
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convertToPresentation
public String convertToPresentation(T value, Class<? extends String> targetType, Locale locale) throws Converter.ConversionExceptionDescription copied from interface:
ConverterConverts 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 chainingConverter.convertToPresentation(Object, Class, Locale)andConverter.convertToModel(Object, Class, Locale)should return the original value.Specified by:
convertToPresentationin interfaceConverter<String,T>Parameters:
value- The value to convert, compatible with the target type. Can be nulltargetType- The requested type of the return valuelocale- 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
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getPresentationType
public Class<String> getPresentationType()Description copied from interface:
ConverterThe target type of the converter. Values of this type can be passed to
Converter.convertToModel(Object, Class, Locale).Specified by:
getPresentationTypein interfaceConverter<String,T>Returns:
The target type
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