public abstract class HandlerInstantiator extends Object
JsonSerializer
s, JsonDeserializer
s, various type
handlers) of specific types. Actual handler type has been resolved at this
point, so instantiator is strictly responsible for providing a configured
instance by constructing and configuring a new instance, or possibly by
recycling a shared instance. One use case is that of allowing
dependency injection, which would otherwise be difficult to do.
Custom instances are allowed to return null to indicate that caller should use the default instantiation handling (which just means calling no-argument constructor via reflection).
Care has to be taken to ensure that if instance returned is shared, it will be thread-safe; caller will not synchronize access to returned instances.
Constructor and Description |
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HandlerInstantiator() |
Modifier and Type | Method and Description |
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abstract JsonDeserializer<?> |
deserializerInstance(DeserializationConfig config,
Annotated annotated,
Class<? extends JsonDeserializer<?>> deserClass)
Method called to get an instance of deserializer of specified type.
|
abstract KeyDeserializer |
keyDeserializerInstance(DeserializationConfig config,
Annotated annotated,
Class<? extends KeyDeserializer> keyDeserClass)
Method called to get an instance of key deserializer of specified type.
|
abstract JsonSerializer<?> |
serializerInstance(SerializationConfig config,
Annotated annotated,
Class<? extends JsonSerializer<?>> serClass)
Method called to get an instance of serializer of specified type.
|
abstract TypeIdResolver |
typeIdResolverInstance(MapperConfig<?> config,
Annotated annotated,
Class<? extends TypeIdResolver> resolverClass)
Method called to get an instance of TypeIdResolver of specified type.
|
abstract TypeResolverBuilder<?> |
typeResolverBuilderInstance(MapperConfig<?> config,
Annotated annotated,
Class<? extends TypeResolverBuilder<?>> builderClass)
Method called to get an instance of TypeResolverBuilder of specified type.
|
ValueInstantiator |
valueInstantiatorInstance(MapperConfig<?> config,
Annotated annotated,
Class<? extends ValueInstantiator> resolverClass)
Method called to construct an instance of ValueInstantiator of specified type.
|
public abstract JsonDeserializer<?> deserializerInstance(DeserializationConfig config, Annotated annotated, Class<? extends JsonDeserializer<?>> deserClass)
config
- Deserialization configuration in effectannotated
- Element (Class, Method, Field, constructor parameter) that
had annotation defining class of deserializer to construct (to allow
implementation use information from other annotations)deserClass
- Class of deserializer instance to returnpublic abstract KeyDeserializer keyDeserializerInstance(DeserializationConfig config, Annotated annotated, Class<? extends KeyDeserializer> keyDeserClass)
config
- Deserialization configuration in effectannotated
- Element (Class, Method, Field, constructor parameter) that
had annotation defining class of key deserializer to construct (to allow
implementation use information from other annotations)keyDeserClass
- Class of key deserializer instance to returnpublic abstract JsonSerializer<?> serializerInstance(SerializationConfig config, Annotated annotated, Class<? extends JsonSerializer<?>> serClass)
config
- Serialization configuration in effectannotated
- Element (Class, Method, Field) that
had annotation defining class of serializer to construct (to allow
implementation use information from other annotations)serClass
- Class of serializer instance to returnpublic abstract TypeResolverBuilder<?> typeResolverBuilderInstance(MapperConfig<?> config, Annotated annotated, Class<? extends TypeResolverBuilder<?>> builderClass)
config
- Mapper configuration in effect (either SerializationConfig or
DeserializationConfig, depending on when instance is being constructed)annotated
- annotated Element (Class, Method, Field) that
had annotation defining class of builder to construct (to allow
implementation use information from other annotations)builderClass
- Class of builder instance to returnpublic abstract TypeIdResolver typeIdResolverInstance(MapperConfig<?> config, Annotated annotated, Class<? extends TypeIdResolver> resolverClass)
config
- Mapper configuration in effect (either SerializationConfig or
DeserializationConfig, depending on when instance is being constructed)annotated
- annotated Element (Class, Method, Field) that
had annotation defining class of resolver to construct (to allow
implementation use information from other annotations)resolverClass
- Class of resolver instance to returnpublic ValueInstantiator valueInstantiatorInstance(MapperConfig<?> config, Annotated annotated, Class<? extends ValueInstantiator> resolverClass)