Package com.fasterxml.jackson.databind.jsontype.impl

Class AsDeductionTypeDeserializer

java.lang.Object

com.fasterxml.jackson.databind.jsontype.TypeDeserializer

com.fasterxml.jackson.databind.jsontype.impl.TypeDeserializerBase

com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer

com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer

com.fasterxml.jackson.databind.jsontype.impl.AsDeductionTypeDeserializer

All Implemented Interfaces:

java.io.Serializable

public class AsDeductionTypeDeserializer
extends AsPropertyTypeDeserializer

A TypeDeserializer capable of deducing polymorphic types based on the fields available. Deduction is limited to the names of child properties (not their values or, consequently, any nested descendants). Exceptions will be thrown if not enough unique information is present to select a single subtype.

The current deduction process does not support pojo-hierarchies such that the absence of child fields infers a parent type. That is, every deducible subtype MUST have some unique fields and the input data MUST contain said unique fields to provide a positive match.

Since:

2.12

See Also:

Serialized Form

Field Summary

Fields inherited from class com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer

_inclusion, _msgForMissingId, _strictTypeIdHandling

Fields inherited from class com.fasterxml.jackson.databind.jsontype.impl.TypeDeserializerBase

_baseType, _defaultImpl, _defaultImplDeserializer, _deserializers, _idResolver, _property, _typeIdVisible, _typePropertyName

Constructor Summary

Constructors

Constructor	Description
AsDeductionTypeDeserializer(JavaType bt, TypeIdResolver idRes, JavaType defaultImpl, DeserializationConfig config, java.util.Collection<NamedType> subtypes)
AsDeductionTypeDeserializer(AsDeductionTypeDeserializer src, BeanProperty property)

Method Summary

Modifier and Type	Method	Description
protected java.util.Map<java.util.BitSet,java.lang.String>	buildFingerprints(DeserializationConfig config, java.util.Collection<NamedType> subtypes)
java.lang.Object	deserializeTypedFromObject(com.fasterxml.jackson.core.JsonParser p, DeserializationContext ctxt)	This is the trickiest thing to handle, since property we are looking for may be anywhere...
TypeDeserializer	forProperty(BeanProperty prop)	Method called to create contextual version, to be used for values of given property.

Methods inherited from class com.fasterxml.jackson.databind.jsontype.impl.AsPropertyTypeDeserializer

_deserializeTypedForId, _deserializeTypedUsingDefaultImpl, _deserializeTypedUsingDefaultImpl, deserializeTypedFromAny, getTypeInclusion

Methods inherited from class com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer

_deserialize, _locateTypeId, _usesExternalId, deserializeTypedFromArray, deserializeTypedFromScalar

Methods inherited from class com.fasterxml.jackson.databind.jsontype.impl.TypeDeserializerBase

_deserializeWithNativeTypeId, _deserializeWithNativeTypeId, _findDefaultImplDeserializer, _findDeserializer, _handleMissingTypeId, _handleUnknownTypeId, baseType, baseTypeName, getDefaultImpl, getPropertyName, getTypeIdResolver, hasDefaultImpl, toString

Methods inherited from class com.fasterxml.jackson.databind.jsontype.TypeDeserializer

deserializeIfNatural, deserializeIfNatural

Methods inherited from class java.lang.Object

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

Constructor Detail

AsDeductionTypeDeserializer

public AsDeductionTypeDeserializer(JavaType bt,
                                   TypeIdResolver idRes,
                                   JavaType defaultImpl,
                                   DeserializationConfig config,
                                   java.util.Collection<NamedType> subtypes)

AsDeductionTypeDeserializer

public AsDeductionTypeDeserializer(AsDeductionTypeDeserializer src,
                                   BeanProperty property)

Method Detail

forProperty

public TypeDeserializer forProperty(BeanProperty prop)

Description copied from class: TypeDeserializer

Method called to create contextual version, to be used for values of given property. This may be the type itself (as is the case for bean properties), or values contained (for Collection or Map valued properties).

Overrides:

forProperty in class AsPropertyTypeDeserializer

buildFingerprints

protected java.util.Map<java.util.BitSet,java.lang.String> buildFingerprints(DeserializationConfig config,
                                                                                   java.util.Collection<NamedType> subtypes)

deserializeTypedFromObject

public java.lang.Object deserializeTypedFromObject(com.fasterxml.jackson.core.JsonParser p,
                                                   DeserializationContext ctxt)
                                            throws java.io.IOException

Description copied from class: AsPropertyTypeDeserializer

This is the trickiest thing to handle, since property we are looking for may be anywhere...

Overrides:

deserializeTypedFromObject in class AsPropertyTypeDeserializer

Throws:

java.io.IOException