com.fasterxml.jackson.annotation

Class SimpleObjectIdResolver

java.lang.Object

com.fasterxml.jackson.annotation.SimpleObjectIdResolver

All Implemented Interfaces:

ObjectIdResolver

public class SimpleObjectIdResolver
extends Object
implements ObjectIdResolver

Simple implementation of ObjectIdResolver

Author:

Pascal Gélinas

Field Summary

Fields

Modifier and Type	Field and Description
protected Map<ObjectIdGenerator.IdKey,Object>	_items

Constructor Summary

Constructors

Constructor and Description
SimpleObjectIdResolver()

Method Summary

Modifier and Type	Method and Description
void	bindItem(ObjectIdGenerator.IdKey id, Object ob) Method called when a POJO is deserialized and has an Object Identifier.
boolean	canUseFor(ObjectIdResolver resolverType) Method called to check whether this resolver instance can be used for Object Ids of specific resolver type; determination is based by passing a configured "blueprint" (prototype) instance; from which the actual instances are created (using ObjectIdResolver.newForDeserialization(java.lang.Object)).
ObjectIdResolver	newForDeserialization(Object context) Factory method called to create a new instance to use for deserialization: needed since resolvers may have state (a pool of objects).
Object	resolveId(ObjectIdGenerator.IdKey id) Method called when deserialization encounters the given Object Identifier and requires the POJO associated with it.

Methods inherited from class java.lang.Object

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

Field Detail

_items

protected Map<ObjectIdGenerator.IdKey,Object> _items

Constructor Detail

SimpleObjectIdResolver

public SimpleObjectIdResolver()

Method Detail

bindItem

public void bindItem(ObjectIdGenerator.IdKey id,
                     Object ob)

Description copied from interface: ObjectIdResolver

Method called when a POJO is deserialized and has an Object Identifier. Method exists so that implementation can keep track of existing object in JSON stream that could be useful for further resolution.

Specified by:

bindItem in interface ObjectIdResolver

Parameters:

id - The Object Identifier

ob - The POJO associated to that Identifier

resolveId

public Object resolveId(ObjectIdGenerator.IdKey id)

Description copied from interface: ObjectIdResolver

Method called when deserialization encounters the given Object Identifier and requires the POJO associated with it.

Specified by:

resolveId in interface ObjectIdResolver

Parameters:

id - The Object Identifier

Returns:

The POJO, or null if unable to resolve.

canUseFor

public boolean canUseFor(ObjectIdResolver resolverType)

Description copied from interface: ObjectIdResolver

Method called to check whether this resolver instance can be used for Object Ids of specific resolver type; determination is based by passing a configured "blueprint" (prototype) instance; from which the actual instances are created (using ObjectIdResolver.newForDeserialization(java.lang.Object)).

Specified by:

canUseFor in interface ObjectIdResolver

Returns:

True if this instance can be used as-is; false if not

newForDeserialization

public ObjectIdResolver newForDeserialization(Object context)

Description copied from interface: ObjectIdResolver

Factory method called to create a new instance to use for deserialization: needed since resolvers may have state (a pool of objects).

Note that actual type of 'context' is com.fasterxml.jackson.databind.DeserializationContext, but can not be declared here as type itself (as well as call to this object) comes from databind package.

Specified by:

newForDeserialization in interface ObjectIdResolver

Parameters:

context - Deserialization context object used (of type com.fasterxml.jackson.databind.DeserializationContext) ; may be needed by more complex resolvers to access contextual information such as configuration.