Enum JsonWriteFeature

    • Enum Constant Detail


        public static final JsonWriteFeature QUOTE_FIELD_NAMES
        Feature that determines whether JSON Object field names are quoted using double-quotes, as specified by JSON specification or not. Ability to disable quoting was added to support use cases where they are not usually expected, which most commonly occurs when used straight from Javascript.

        Feature is enabled by default (since it is required by JSON specification).


        public static final JsonWriteFeature WRITE_NAN_AS_STRINGS
        Feature that determines whether "NaN" ("not a number", that is, not real number) float/double values are output as JSON strings. The values checked are Double.Nan, Double.POSITIVE_INFINITY and Double.NEGATIVE_INIFINTY (and associated Float values). If feature is disabled, these numbers are still output using associated literal values, resulting in non-conforming output.

        Feature is enabled by default.


        public static final JsonWriteFeature WRITE_NUMBERS_AS_STRINGS
        Feature that forces all regular number values to be written as JSON Strings, instead of as JSON Numbers. Default state is 'false', meaning that Java numbers are to be serialized using basic numeric representation but if enabled all such numeric values are instead written out as JSON Strings instead.

        One use case is to avoid problems with Javascript limitations: since Javascript standard specifies that all number handling should be done using 64-bit IEEE 754 floating point values, result being that some 64-bit integer values can not be accurately represent (as mantissa is only 51 bit wide).

        Feature is disabled by default.


        public static final JsonWriteFeature ESCAPE_NON_ASCII
        Feature that specifies that all characters beyond 7-bit ASCII range (i.e. code points of 128 and above) need to be output using format-specific escapes (for JSON, backslash escapes), if format uses escaping mechanisms (which is generally true for textual formats but not for binary formats).

        Feature is disabled by default.

    • Method Detail

      • values

        public static JsonWriteFeature[] values()
        Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:
        for (JsonWriteFeature c : JsonWriteFeature.values())
        an array containing the constants of this enum type, in the order they are declared
      • valueOf

        public static JsonWriteFeature valueOf​(String name)
        Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)
        name - the name of the enum constant to be returned.
        the enum constant with the specified name
        IllegalArgumentException - if this enum type has no constant with the specified name
        NullPointerException - if the argument is null
      • collectDefaults

        public static int collectDefaults()
        Method that calculates bit set (flags) of all features that are enabled by default.
        Bit mask of all features that are enabled by default
      • getMask

        public int getMask()
        Description copied from interface: FormatFeature
        Returns bit mask for this feature instance; must be a single bit, that is of form (1 << N)
        Specified by:
        getMask in interface FormatFeature
        Specified by:
        getMask in interface JacksonFeature
        Bit mask of this feature
      • enabledIn

        public boolean enabledIn​(int flags)
        Description copied from interface: FormatFeature
        Convenience method for checking whether feature is enabled in given bitmask
        Specified by:
        enabledIn in interface FormatFeature
        Specified by:
        enabledIn in interface JacksonFeature
        flags - Bit field that contains a set of enabled features of this type
        True if this feature is enabled in passed bit field