Class FloatDeserializer
- All Implemented Interfaces:
com.fasterxml.jackson.databind.deser.NullValueProvider
,com.fasterxml.jackson.databind.deser.ValueInstantiator.Gettable
,Serializable
public class FloatDeserializer
extends com.fasterxml.jackson.databind.deser.std.StdDeserializer<Float>
A custom deserializer for
Float
values, extending StdDeserializer
.
This deserializer handles special cases for floating-point values represented as strings
in JSON, converting them into their corresponding Float
constants.
Special handling is provided for:
"Infinity"
: Deserialized asFloat.POSITIVE_INFINITY
."-Infinity"
: Deserialized asFloat.NEGATIVE_INFINITY
."NaN"
: Deserialized asFloat.NaN
.- All other valid numeric strings: Parsed into a
Float
usingFloat.parseFloat(String)
.
- See Also:
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Nested Class Summary
Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonDeserializer
com.fasterxml.jackson.databind.JsonDeserializer.None
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Field Summary
Fields inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer
_valueClass, _valueType, F_MASK_ACCEPT_ARRAYS, F_MASK_INT_COERCIONS
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Constructor Summary
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Method Summary
Modifier and TypeMethodDescriptiondeserialize
(com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.databind.DeserializationContext ctxt) Deserializes a JSON string into aFloat
object.Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer
_byteOverflow, _checkBooleanToStringCoercion, _checkCoercionFail, _checkDoubleSpecialValue, _checkFloatSpecialValue, _checkFloatToIntCoercion, _checkFloatToStringCoercion, _checkFromStringCoercion, _checkFromStringCoercion, _checkIntToFloatCoercion, _checkIntToStringCoercion, _checkTextualNull, _checkToStringCoercion, _coerceBooleanFromInt, _coercedTypeDesc, _coercedTypeDesc, _coerceEmptyString, _coerceIntegral, _coerceNullToken, _coerceTextualNull, _deserializeFromArray, _deserializeFromEmpty, _deserializeFromEmptyString, _deserializeFromString, _deserializeWrappedValue, _failDoubleToIntCoercion, _findCoercionFromBlankString, _findCoercionFromEmptyArray, _findCoercionFromEmptyString, _findNullProvider, _hasTextualNull, _intOverflow, _isBlank, _isEmptyOrTextualNull, _isFalse, _isIntNumber, _isNaN, _isNegInf, _isPosInf, _isTrue, _neitherNull, _nonNullNumber, _parseBoolean, _parseBooleanFromInt, _parseBooleanPrimitive, _parseBooleanPrimitive, _parseBytePrimitive, _parseDate, _parseDate, _parseDateFromArray, _parseDouble, _parseDouble, _parseDoublePrimitive, _parseDoublePrimitive, _parseDoublePrimitive, _parseFloatPrimitive, _parseFloatPrimitive, _parseFloatPrimitive, _parseInteger, _parseInteger, _parseIntPrimitive, _parseIntPrimitive, _parseLong, _parseLong, _parseLongPrimitive, _parseLongPrimitive, _parseShortPrimitive, _parseString, _parseString, _reportFailedNullCoerce, _shortOverflow, _verifyEndArrayForSingle, _verifyNullForPrimitive, _verifyNullForPrimitiveCoercion, _verifyNullForScalarCoercion, _verifyNumberForScalarCoercion, _verifyStringForScalarCoercion, deserializeWithType, findContentNullProvider, findContentNullStyle, findConvertingContentDeserializer, findDeserializer, findFormatFeature, findFormatOverrides, findValueNullProvider, getValueClass, getValueInstantiator, getValueType, getValueType, handledType, handleMissingEndArrayForSingle, handleNestedArrayForSingle, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer
Methods inherited from class com.fasterxml.jackson.databind.JsonDeserializer
deserialize, deserializeWithType, findBackReference, getAbsentValue, getDelegatee, getEmptyAccessPattern, getEmptyValue, getEmptyValue, getKnownPropertyNames, getNullAccessPattern, getNullValue, getNullValue, getObjectIdReader, isCachable, logicalType, replaceDelegatee, supportsUpdate, unwrappingDeserializer
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Constructor Details
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FloatDeserializer
public FloatDeserializer()Default constructor. Initializes the deserializer forFloat
type.
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Method Details
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deserialize
public Float deserialize(com.fasterxml.jackson.core.JsonParser p, com.fasterxml.jackson.databind.DeserializationContext ctxt) throws IOException Deserializes a JSON string into aFloat
object.Converts special floating-point string representations into their corresponding
Float
constants. For other valid numeric strings, it parses the value into aFloat
.- Specified by:
deserialize
in classcom.fasterxml.jackson.databind.JsonDeserializer<Float>
- Parameters:
p
- theJsonParser
providing access to the JSON content.ctxt
- theDeserializationContext
for contextual information.- Returns:
- the deserialized
Float
value. - Throws:
IOException
- if an I/O error occurs or the input string is invalid.
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