com.bigdata.rdf.sparql.ast.cache

Class CacheConnectionFactory

java.lang.Object

com.bigdata.rdf.sparql.ast.cache.CacheConnectionFactory

public class CacheConnectionFactory
extends Object

A factory pattern for the ICacheConnection.

Version:

$Id$

Author:

Bryan Thompson

Constructor Summary

Constructors

Constructor and Description
CacheConnectionFactory()

Method Summary

Methods

Modifier and Type	Method and Description
static ICacheConnection	getCacheConnection(QueryEngine queryEngine) Singleton factory.
static int	getCacheCount() Return the #of live ICacheConnection instances.
static ICacheConnection	getExistingCacheConnection(QueryEngine queryEngine) Singleton factory test (does not create the cache).

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheConnectionFactory

public CacheConnectionFactory()

Method Detail

getExistingCacheConnection

public static ICacheConnection getExistingCacheConnection(QueryEngine queryEngine)

Singleton factory test (does not create the cache).

Parameters:

queryEngine - The QueryEngine.

Returns:

The query controller iff one has been obtained from the factory and its weak reference has not been cleared.

getCacheConnection

public static ICacheConnection getCacheConnection(QueryEngine queryEngine)

Singleton factory.

Parameters:

queryEngine - The QueryEngine.

Returns:

The ICacheConnection.

getCacheCount

public static int getCacheCount()

Return the #of live ICacheConnection instances.