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com.fasterxml.jackson.databind.deser

public Interface ValueInstantiators

Known Direct Implementers
com.fasterxml.jackson.databind.deser.ValueInstantiators.Base
Imports
com.fasterxml.jackson.databind.*
Interface for providers of ValueInstantiator instances. Implemented when an object wants to provide custom value instantiators, usually to support custom value types with alternate constructors, or which need specified post-processing after construction but before binding data.

Nested and Inner Type Summary

Modifier and TypeClass and Description
public static class
ValueInstantiators.Base

Basic "NOP" implementation that can be used as the base class for custom implementations.

Method Summary

Modifier and TypeMethod and Description
public ValueInstantiator

Returns:

Instantiator to use; either defaultInstantiator that was passed, or a custom variant; cannot be null.
findValueInstantiator(DeserializationConfig
Deserialization configuration in use
config, BeanDescription
Additional information about POJO type to be instantiated
beanDesc, ValueInstantiator
Instantiator that will be used if no changes are made; passed to allow custom instances to use annotation-provided information (note, however, that earlier ValueInstantiators may have changed it to a custom instantiator already)
defaultInstantiator)

Method called to find the ValueInstantiator to use for creating instances of specified type during deserialization.

Method Detail

findValueInstantiatorback to summary
public ValueInstantiator findValueInstantiator(DeserializationConfig config, BeanDescription beanDesc, ValueInstantiator defaultInstantiator)

Method called to find the ValueInstantiator to use for creating instances of specified type during deserialization. Note that a default value instantiator is always created first and passed; if an implementation does not want to modify or replace it, it has to return passed instance as is (returning null is an error)

Parameters
config:DeserializationConfig

Deserialization configuration in use

beanDesc:BeanDescription

Additional information about POJO type to be instantiated

defaultInstantiator:ValueInstantiator

Instantiator that will be used if no changes are made; passed to allow custom instances to use annotation-provided information (note, however, that earlier ValueInstantiators may have changed it to a custom instantiator already)

Returns:ValueInstantiator

Instantiator to use; either defaultInstantiator that was passed, or a custom variant; cannot be null.

com.fasterxml.jackson.databind.deser back to summary

public Class ValueInstantiators.Base

extends Object
implements ValueInstantiators
Class Inheritance
All Implemented Interfaces
com.fasterxml.jackson.databind.deser.ValueInstantiators
Known Direct Subclasses
com.fasterxml.jackson.databind.module.SimpleValueInstantiators
Basic "NOP" implementation that can be used as the base class for custom implementations. Safer to extend (instead of implementing ValueInstantiators) in case later Jackson versions add new methods in base interface.

Constructor Summary

AccessConstructor and Description
public
Base()

Method Summary

Modifier and TypeMethod and Description
public ValueInstantiator
findValueInstantiator(DeserializationConfig
Deserialization configuration in use
config, BeanDescription
Additional information about POJO type to be instantiated
beanDesc, ValueInstantiator
Instantiator that will be used if no changes are made; passed to allow custom instances to use annotation-provided information (note, however, that earlier ValueInstantiators may have changed it to a custom instantiator already)
defaultInstantiator)

Implements com.fasterxml.jackson.databind.deser.ValueInstantiators.findValueInstantiator.

Method called to find the ValueInstantiator to use for creating instances of specified type during deserialization.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Constructor Detail

Baseback to summary
public Base()

Method Detail

findValueInstantiatorback to summary
public ValueInstantiator findValueInstantiator(DeserializationConfig config, BeanDescription beanDesc, ValueInstantiator defaultInstantiator)

Implements com.fasterxml.jackson.databind.deser.ValueInstantiators.findValueInstantiator.

Doc from com.fasterxml.jackson.databind.deser.ValueInstantiators.findValueInstantiator.

Method called to find the ValueInstantiator to use for creating instances of specified type during deserialization. Note that a default value instantiator is always created first and passed; if an implementation does not want to modify or replace it, it has to return passed instance as is (returning null is an error)

Parameters
config:DeserializationConfig

Deserialization configuration in use

beanDesc:BeanDescription

Additional information about POJO type to be instantiated

defaultInstantiator:ValueInstantiator

Instantiator that will be used if no changes are made; passed to allow custom instances to use annotation-provided information (note, however, that earlier ValueInstantiators may have changed it to a custom instantiator already)

Returns:ValueInstantiator

Instantiator to use; either defaultInstantiator that was passed, or a custom variant; cannot be null.

Annotations
@Override