com.vaadin.data.converter

Class StringToFloatConverter

java.lang.Object

com.vaadin.data.converter.AbstractStringToNumberConverter<Float>

com.vaadin.data.converter.StringToFloatConverter

All Implemented Interfaces:

Converter<String,Float>, Serializable

public class StringToFloatConverter
extends AbstractStringToNumberConverter<Float>

A converter that converts from String to Float and back. Uses the given locale and a NumberFormat instance for formatting and parsing.

Leading and trailing white spaces are ignored when converting from a String.

Override and overwrite AbstractStringToNumberConverter.getFormat(Locale) to use a different format.

Since:

8.0

Author:

Vaadin Ltd

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
StringToFloatConverter(ErrorMessageProvider errorMessageProvider) Creates a new converter instance with the given error message provider.
StringToFloatConverter(Float emptyValue, ErrorMessageProvider errorMessageProvider) Creates a new converter instance with the given empty string value and error message provider.
StringToFloatConverter(Float emptyValue, String errorMessage) Creates a new converter instance with the given empty string value and error message.
StringToFloatConverter(String errorMessage) Creates a new converter instance with the given error message.

Method Summary

Modifier and Type	Method and Description
Result<Float>	convertToModel(String value, ValueContext context) Converts the given value from model type to presentation type.

Methods inherited from class com.vaadin.data.converter.AbstractStringToNumberConverter

convertToNumber, convertToPresentation, getErrorMessage, getFormat

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.vaadin.data.Converter

chain, from, from, identity

Constructor Detail

StringToFloatConverter

public StringToFloatConverter(String errorMessage)

Creates a new converter instance with the given error message. Empty strings are converted to null.

Parameters:

errorMessage - the error message to use if conversion fails

StringToFloatConverter

public StringToFloatConverter(Float emptyValue,
                              String errorMessage)

Creates a new converter instance with the given empty string value and error message.

Parameters:

emptyValue - the presentation value to return when converting an empty string, may be null

errorMessage - the error message to use if conversion fails

StringToFloatConverter

public StringToFloatConverter(ErrorMessageProvider errorMessageProvider)

Creates a new converter instance with the given error message provider. Empty strings are converted to null.

Parameters:

errorMessageProvider - the error message provider to use if conversion fails

Since:

8.4

StringToFloatConverter

public StringToFloatConverter(Float emptyValue,
                              ErrorMessageProvider errorMessageProvider)

Creates a new converter instance with the given empty string value and error message provider.

Parameters:

emptyValue - the presentation value to return when converting an empty string, may be null

errorMessageProvider - the error message provider to use if conversion fails

Since:

8.4

Method Detail

convertToModel

public Result<Float> convertToModel(String value,
                                    ValueContext context)

Description copied from interface: Converter

Converts the given value from model type to presentation type.

A converter can optionally use locale to do the conversion.

Parameters:

value - The value to convert. Can be null

context - The value context for the conversion.

Returns:

The converted value compatible with the source type