Package org.freedesktop.wayland.util

Class ObjectCache

java.lang.Object

org.freedesktop.wayland.util.ObjectCache

public class ObjectCache
extends Object

A cache for POJOs with a native context. It maps POJOs to their native context (a native pointer) so it can consistently return the same POJO given a pointer value.

Constructor Summary

Constructors

Constructor	Description
ObjectCache()

Method Summary

Modifier and Type	Method	Description
static <T> T	from(MemorySegment pointer)	Retrieve a POJO that is mapped to a native pointer.
static <T> T	remove(MemorySegment pointer)	Remove a mapped POJO.
static void	store(MemorySegment pointer, Object object)	Maps a native pointer to a POJO.

Methods inherited from class java.lang.Object

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

Constructor Details

ObjectCache

public ObjectCache()

Method Details

from

public static <T> T from(MemorySegment pointer)

Retrieve a POJO that is mapped to a native pointer. This method should be used to easily retrieve a POJO with a native context. This method will only return a POJO if it was previously cached with a call to store(MemorySegment, Object)

Type Parameters:

T - The type of the POJO to cast.

Parameters:

pointer - The pointer of the associated object.

Returns:

The cached object.

store

public static void store(MemorySegment pointer,
 Object object)

Maps a native pointer to a POJO. This method should be used to easily store a POJO with a native context.

Parameters:

pointer - The pointer of the associated object.

object - The object to cache.

remove

public static <T> T remove(MemorySegment pointer)

Remove a mapped POJO. This method should be used when the native context of the POJO is no longer valid.

Parameters:

pointer - The pointer of the associated object.