Package com.vaadin.data.converter

Class StringToFloatConverter

  • All Implemented Interfaces:
    Converter<java.lang.String,​java.lang.Float>, java.io.Serializable
    public class StringToFloatConverter
extends AbstractStringToNumberConverter<java.lang.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 Detail

      • StringToFloatConverter

        public StringToFloatConverter​(java.lang.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​(java.lang.Float emptyValue,
                              java.lang.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​(java.lang.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<java.lang.Float> convertToModel​(java.lang.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