com.esotericsoftware.kryo

Interface ReferenceResolver

All Known Implementing Classes:

ListReferenceResolver, MapReferenceResolver

public interface ReferenceResolver

When references are enabled, this tracks objects that have already been read or written, provides an ID for objects that are written, and looks up by ID objects that have been read.

Author:

Nathan Sweet

Method Summary

Methods

Modifier and Type	Method and Description
int	addWrittenObject(Object object) Returns a new ID for an object that is being written for the first time.
Object	getReadObject(Class type, int id) Returns the object for the specified ID.
int	getWrittenId(Object object) Returns an ID for the object if it has been written previously, otherwise returns -1.
int	nextReadId(Class type) Reserves the ID for the next object that will be read.
void	reset() Called by Kryo.reset().
void	setKryo(Kryo kryo) Sets the Kryo instance that this ClassResolver will be used for.
void	setReadObject(int id, Object object) Sets the ID for an object that has been read.
boolean	useReferences(Class type) Returns true if references will be written for the specified type.

Method Detail

setKryo

void setKryo(Kryo kryo)

Sets the Kryo instance that this ClassResolver will be used for. This is called automatically by Kryo.

getWrittenId

int getWrittenId(Object object)

Returns an ID for the object if it has been written previously, otherwise returns -1.

addWrittenObject

int addWrittenObject(Object object)

Returns a new ID for an object that is being written for the first time.

Returns:

The ID, which is stored more efficiently if it is positive and must not be -1 or -2.

nextReadId

int nextReadId(Class type)

Reserves the ID for the next object that will be read. This is called only the first time an object is encountered.

Parameters:

type - The type of object that will be read.

Returns:

The ID, which is stored more efficiently if it is positive and must not be -1 or -2.

setReadObject

void setReadObject(int id,
                 Object object)

Sets the ID for an object that has been read.

Parameters:

id - The ID from nextReadId(Class).

getReadObject

Object getReadObject(Class type,
                   int id)

Returns the object for the specified ID. The ID and object are guaranteed to have been previously passed in a call to setReadObject(int, Object).

reset

void reset()

Called by Kryo.reset().

useReferences

boolean useReferences(Class type)

Returns true if references will be written for the specified type.

Parameters:

type - Will never be a primitive type, but may be a primitive type wrapper.