@InterfaceAudience.Private public class WeakObjectPool<K,V> extends ObjectPool<K,V>
WeakReference
based shared object pool. The objects are kept in weak references and
associated with keys which are identified by the equals
method. The objects are created
by ObjectPool.ObjectFactory
on demand. The object creation
is expected to be lightweight, and the objects may be excessively created and discarded. Thread
safe.Modifier and Type | Class and Description |
---|---|
private class |
WeakObjectPool.WeakObjectReference |
ObjectPool.ObjectFactory<K,V>
DEFAULT_CONCURRENCY_LEVEL, DEFAULT_INITIAL_CAPACITY, referenceCache, staleRefQueue
Constructor and Description |
---|
WeakObjectPool(ObjectPool.ObjectFactory<K,V> objectFactory) |
WeakObjectPool(ObjectPool.ObjectFactory<K,V> objectFactory,
int initialCapacity) |
WeakObjectPool(ObjectPool.ObjectFactory<K,V> objectFactory,
int initialCapacity,
int concurrencyLevel) |
Modifier and Type | Method and Description |
---|---|
Reference<V> |
createReference(K key,
V obj)
Create a reference associated with the given object
|
K |
getReferenceKey(Reference<V> ref)
Get key of the given reference
|
get, purge, size
public WeakObjectPool(ObjectPool.ObjectFactory<K,V> objectFactory)
public WeakObjectPool(ObjectPool.ObjectFactory<K,V> objectFactory, int initialCapacity)
public WeakObjectPool(ObjectPool.ObjectFactory<K,V> objectFactory, int initialCapacity, int concurrencyLevel)
public Reference<V> createReference(K key, V obj)
ObjectPool
createReference
in class ObjectPool<K,V>
key
- the key to store in the referenceobj
- the object to associate withpublic K getReferenceKey(Reference<V> ref)
ObjectPool
getReferenceKey
in class ObjectPool<K,V>
ref
- The referenceCopyright © 2007–2020 The Apache Software Foundation. All rights reserved.