com.thinkaurelius.titan.graphdb.transaction.vertexcache

Class LRUVertexCache

java.lang.Object

com.thinkaurelius.titan.graphdb.transaction.vertexcache.LRUVertexCache

All Implemented Interfaces:

VertexCache

public class LRUVertexCache
extends Object
implements VertexCache

Constructor Summary

Constructors

Constructor and Description
LRUVertexCache(int capacity)

Method Summary

Methods

Modifier and Type	Method and Description
void	add(InternalVertex vertex, long id) Adds the given vertex with the given id to the cache.
void	close() Closes the cache which allows the cache to release allocated memory.
boolean	contains(long id) Checks whether the cache contains a vertex with the given id
InternalVertex	get(long id, Retriever<Long,InternalVertex> retriever) Returns the vertex with the given id or null if it is not in the cache
List<InternalVertex>	getAllNew() Returns an iterable over all new vertices in the cache

Methods inherited from class java.lang.Object

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

Constructor Detail

LRUVertexCache

public LRUVertexCache(int capacity)

Method Detail

contains

public boolean contains(long id)

Description copied from interface: VertexCache

Checks whether the cache contains a vertex with the given id

Specified by:

contains in interface VertexCache

Parameters:

id - Vertex id

Returns:

true if a vertex with the given id is contained, else false

get

public InternalVertex get(long id,
                 Retriever<Long,InternalVertex> retriever)

Description copied from interface: VertexCache

Returns the vertex with the given id or null if it is not in the cache

Specified by:

get in interface VertexCache

Returns:

add

public void add(InternalVertex vertex,
       long id)

Description copied from interface: VertexCache

Adds the given vertex with the given id to the cache. The given vertex may already be in the cache. In other words, this method may be called to ensure that a vertex is still in the cache.

Specified by:

add in interface VertexCache

getAllNew

public List<InternalVertex> getAllNew()

Description copied from interface: VertexCache

Returns an iterable over all new vertices in the cache

Specified by:

getAllNew in interface VertexCache

Returns:

close

public void close()

Description copied from interface: VertexCache

Closes the cache which allows the cache to release allocated memory. Calling any of the other methods after closing a cache has undetermined behavior.

Specified by:

close in interface VertexCache