org.apache.jena.atlas.lib

Class CacheFactory

java.lang.Object

org.apache.jena.atlas.lib.CacheFactory

public class CacheFactory
extends Object

Constructor Summary

Constructors

Constructor and Description
CacheFactory()

Method Summary

Methods

Modifier and Type	Method and Description
static <Key,Value> Cache<Key,Value>	createCache(float loadFactor, int maxSize) Create a cache which has space for up to a certain number of objects.
static <Key,Value> Cache<Key,Value>	createCache(Getter<Key,Value> getter, int maxSize) Create a cache which has space for upto a certain number of objects.
static <Key,Value> Cache<Key,Value>	createCache(int maxSize) Create a cache which has space for up to a certain number of objects.
static <Obj> CacheSet<Obj>	createCacheSet(int size) Create set-cache, rather than a map-cache.
static <Key,Value> Cache<Key,Value>	createCacheUnbounded() Create a cache which has unbounded space
static <Key,Value> Cache<Key,Value>	createCacheWithGetter(Cache<Key,Value> cache, Getter<Key,Value> getter)
static <Key,Value> Cache<Key,Value>	createNullCache() Create a null cache
static <Key,Value> Cache<Key,Value>	createOneSlotCache() One slot cache
static <Key,Value> Cache<Key,Value>	createSimpleCache(int size) Create a lightweight cache (e.g.
static <Key,Value> CacheStats<Key,Value>	createStats(Cache<Key,Value> cache) Add a statistics wrapper to an existing cache
static <Key,Value> Cache<Key,Value>	createSync(Cache<Key,Value> cache) Add a synchronization wrapper to an existing cache
static <Obj> CacheSet<Obj>	createSync(CacheSet<Obj> cache) Add a synchronization wrapper to an existing set-cache

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheFactory

public CacheFactory()

Method Detail

createCache

public static <Key,Value> Cache<Key,Value> createCache(int maxSize)

Create a cache which has space for up to a certain number of objects. This is an LRU cache, or similar. The cache returns null for a cache miss.

createCache

public static <Key,Value> Cache<Key,Value> createCache(float loadFactor,
                                       int maxSize)

Create a cache which has space for up to a certain number of objects. The cache has an explicit loadfactor. The cache returns null for a cache miss.

createCache

public static <Key,Value> Cache<Key,Value> createCache(Getter<Key,Value> getter,
                                       int maxSize)

Create a cache which has space for upto a certain number of objects. Call the getter when the cache has a miss.

createNullCache

public static <Key,Value> Cache<Key,Value> createNullCache()

Create a null cache

createCacheUnbounded

public static <Key,Value> Cache<Key,Value> createCacheUnbounded()

Create a cache which has unbounded space

createCacheWithGetter

public static <Key,Value> Cache<Key,Value> createCacheWithGetter(Cache<Key,Value> cache,
                                                 Getter<Key,Value> getter)

createSimpleCache

public static <Key,Value> Cache<Key,Value> createSimpleCache(int size)

Create a lightweight cache (e.g. slot replacement)

createOneSlotCache

public static <Key,Value> Cache<Key,Value> createOneSlotCache()

One slot cache

createStats

public static <Key,Value> CacheStats<Key,Value> createStats(Cache<Key,Value> cache)

Add a statistics wrapper to an existing cache

createSync

public static <Key,Value> Cache<Key,Value> createSync(Cache<Key,Value> cache)

Add a synchronization wrapper to an existing cache

createCacheSet

public static <Obj> CacheSet<Obj> createCacheSet(int size)

Create set-cache, rather than a map-cache.

See Also:

Pool

createSync

public static <Obj> CacheSet<Obj> createSync(CacheSet<Obj> cache)

Add a synchronization wrapper to an existing set-cache