com.fasterxml.jackson.databind.deser.std

Class NumberDeserializers.PrimitiveOrWrapperDeserializer<T>

java.lang.Object

com.fasterxml.jackson.databind.JsonDeserializer<T>

com.fasterxml.jackson.databind.deser.std.StdDeserializer<T>

com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer<T>

com.fasterxml.jackson.databind.deser.std.NumberDeserializers.PrimitiveOrWrapperDeserializer<T>

All Implemented Interfaces:

NullValueProvider, Serializable

Direct Known Subclasses:

NumberDeserializers.BooleanDeserializer, NumberDeserializers.ByteDeserializer, NumberDeserializers.CharacterDeserializer, NumberDeserializers.DoubleDeserializer, NumberDeserializers.FloatDeserializer, NumberDeserializers.IntegerDeserializer, NumberDeserializers.LongDeserializer, NumberDeserializers.ShortDeserializer

Enclosing class:

NumberDeserializers

protected abstract static class NumberDeserializers.PrimitiveOrWrapperDeserializer<T>
extends StdScalarDeserializer<T>

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class com.fasterxml.jackson.databind.JsonDeserializer

JsonDeserializer.None

Field Summary

Fields

Modifier and Type	Field and Description
protected T	_emptyValue
protected T	_nullValue
protected boolean	_primitive

Fields inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer

_valueClass, _valueType, F_MASK_ACCEPT_ARRAYS, F_MASK_INT_COERCIONS

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	PrimitiveOrWrapperDeserializer(Class<T> vc, T nvl, T empty)

Method Summary

Modifier and Type	Method and Description
Object	getEmptyValue(DeserializationContext ctxt) Method called to determine value to be used for "empty" values (most commonly when deserializing from empty JSON Strings).
AccessPattern	getNullAccessPattern() This method may be called in conjunction with calls to JsonDeserializer.getNullValue(DeserializationContext), to check whether it needs to be called just once (static values), or each time empty value is needed.
T	getNullValue(DeserializationContext ctxt) Method that can be called to determine value to be used for representing null values (values deserialized when JSON token is JsonToken.VALUE_NULL).

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdScalarDeserializer

deserialize, deserializeWithType, getEmptyAccessPattern, supportsUpdate

Methods inherited from class com.fasterxml.jackson.databind.deser.std.StdDeserializer

_byteOverflow, _coercedTypeDesc, _coerceEmptyString, _coerceIntegral, _coerceNullToken, _coerceTextualNull, _deserializeFromArray, _deserializeFromEmpty, _deserializeWrappedValue, _failDoubleToIntCoercion, _findNullProvider, _hasTextualNull, _intOverflow, _isEmptyOrTextualNull, _isIntNumber, _isNaN, _isNegInf, _isPosInf, _neitherNull, _nonNullNumber, _parseBooleanFromInt, _parseBooleanPrimitive, _parseBytePrimitive, _parseDate, _parseDate, _parseDateFromArray, _parseDoublePrimitive, _parseDoublePrimitive, _parseFloatPrimitive, _parseFloatPrimitive, _parseIntPrimitive, _parseIntPrimitive, _parseLongPrimitive, _parseLongPrimitive, _parseShortPrimitive, _parseString, _reportFailedNullCoerce, _shortOverflow, _verifyEndArrayForSingle, _verifyNullForPrimitive, _verifyNullForPrimitiveCoercion, _verifyNullForScalarCoercion, _verifyNumberForScalarCoercion, _verifyStringForScalarCoercion, findContentNullProvider, findContentNullStyle, findConvertingContentDeserializer, findDeserializer, findFormatFeature, findFormatOverrides, findValueNullProvider, getValueClass, getValueType, getValueType, handledType, handleMissingEndArrayForSingle, handleUnknownProperty, isDefaultDeserializer, isDefaultKeyDeserializer, parseDouble

Methods inherited from class com.fasterxml.jackson.databind.JsonDeserializer

deserialize, deserializeWithType, findBackReference, getDelegatee, getEmptyValue, getKnownPropertyNames, getNullValue, getObjectIdReader, isCachable, replaceDelegatee, unwrappingDeserializer

Methods inherited from class java.lang.Object

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

Field Detail

_nullValue

protected final T _nullValue

_emptyValue

protected final T _emptyValue

_primitive

protected final boolean _primitive

Constructor Detail

PrimitiveOrWrapperDeserializer

protected PrimitiveOrWrapperDeserializer(Class<T> vc,
                                         T nvl,
                                         T empty)

Method Detail

getNullAccessPattern

public AccessPattern getNullAccessPattern()

Description copied from class: JsonDeserializer

This method may be called in conjunction with calls to JsonDeserializer.getNullValue(DeserializationContext), to check whether it needs to be called just once (static values), or each time empty value is needed.

Default implementation indicates that "null value" to use for input null is simply Java `null` for all deserializers, unless overridden by sub-classes. This information may be used as optimization.

Specified by:

getNullAccessPattern in interface NullValueProvider

Overrides:

getNullAccessPattern in class StdScalarDeserializer<T>

getNullValue

public final T getNullValue(DeserializationContext ctxt)
                     throws JsonMappingException

Description copied from class: JsonDeserializer

Method that can be called to determine value to be used for representing null values (values deserialized when JSON token is JsonToken.VALUE_NULL). Usually this is simply Java null, but for some types (especially primitives) it may be necessary to use non-null values.

This method may be called once, or multiple times, depending on what JsonDeserializer.getNullAccessPattern() returns.

Default implementation simply returns null.

Specified by:

getNullValue in interface NullValueProvider

Overrides:

getNullValue in class JsonDeserializer<T>

Throws:

JsonMappingException

getEmptyValue

public Object getEmptyValue(DeserializationContext ctxt)
                     throws JsonMappingException

Description copied from class: JsonDeserializer

Method called to determine value to be used for "empty" values (most commonly when deserializing from empty JSON Strings). Usually this is same as JsonDeserializer.getNullValue(com.fasterxml.jackson.databind.DeserializationContext) (which in turn is usually simply Java null), but it can be overridden for specific types. Or, if type should never be converted from empty String, method can also throw an exception.

This method may be called once, or multiple times, depending on what JsonDeserializer.getEmptyAccessPattern() returns.

Default implementation simply calls JsonDeserializer.getNullValue(com.fasterxml.jackson.databind.DeserializationContext) and returns value.

Overrides:

getEmptyValue in class JsonDeserializer<T>

Throws:

JsonMappingException