Package com.fasterxml.jackson.databind.jsontype

Package that contains interfaces that define how to implement functionality for dynamically resolving type during deserialization. This is needed for complete handling of polymorphic types, where actual type cannot be determined statically (declared type is a supertype of actual polymorphic serialized types).

Interface Summary

Interface	Description
TypeIdResolver	Interface that defines standard API for converting types to type identifiers and vice versa.
TypeResolverBuilder<T extends TypeResolverBuilder<T>>	Interface that defines builders that are configured based on annotations (like JsonTypeInfo or JAXB annotations), and produce type serializers and deserializers used for handling type information embedded in JSON to allow for safe polymorphic type handling.

Class Summary

Class	Description
BasicPolymorphicTypeValidator	Standard BasicPolymorphicTypeValidator implementation that users may want to use for constructing validators based on simple class hierarchy and/or name patterns to allow and/or deny certain subtypes.
BasicPolymorphicTypeValidator.Builder	Builder class for configuring and constructing immutable BasicPolymorphicTypeValidator instances.
BasicPolymorphicTypeValidator.NameMatcher	General matcher interface (predicate) for validating unresolved subclass class name.
BasicPolymorphicTypeValidator.TypeMatcher	General matcher interface (predicate) for validating class values (base type or resolved subtype)
DefaultBaseTypeLimitingValidator	PolymorphicTypeValidator that will only allow polymorphic handling if the base type is NOT one of potential dangerous base types (see DefaultBaseTypeLimitingValidator.isUnsafeBaseType(com.fasterxml.jackson.databind.cfg.MapperConfig<?>, com.fasterxml.jackson.databind.JavaType) for specific list of such base types).
NamedType	Simple container class for types with optional logical name, used as external identifier
PolymorphicTypeValidator	Interface for classes that handle validation of class-name - based subtypes used with Polymorphic Deserialization: both via "default typing" and explicit @JsonTypeInfo when using Java Class name as Type Identifier.
PolymorphicTypeValidator.Base	Shared base class with partial implementation (with all validation calls returning PolymorphicTypeValidator.Validity.INDETERMINATE) and convenience methods for indicating failure reasons.
SubtypeResolver	Helper object used for handling registration on resolving of super-types to sub-types.
TypeDeserializer	Interface for deserializing type information from JSON content, to type-safely deserialize data into correct polymorphic instance (when type inclusion has been enabled for type handled).
TypeSerializer	Interface for serializing type information regarding instances of specified base type (super class), so that exact subtype can be properly deserialized later on.

Enum Summary

Enum	Description
PolymorphicTypeValidator.Validity	Definition of return values to indicate determination regarding validity.