org.apache.lucene.util
Class RefCount<T>

java.lang.Object
  org.apache.lucene.util.RefCount<T>

public class RefCount<T>
extends Object

Manages reference counting for a given object. Extensions can override release() to do custom logic when reference counting hits 0.

Field Summary

protected T

object

Constructor Summary

RefCount(T object)

Method Summary

void	decRef() Decrements the reference counting of this object.
T	get()
int	getRefCount() Returns the current reference count.
void	incRef() Increments the reference count.
protected void	release() Called when reference counting hits 0.

Methods inherited from class java.lang.Object

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

Field Detail

object

protected final T object

Constructor Detail

RefCount

public RefCount(T object)

Method Detail

release

protected void release()
                throws IOException

Called when reference counting hits 0. By default this method does nothing, but extensions can override to e.g. release resources attached to object that is managed by this class.

Throws:

IOException

decRef

public final void decRef()
                  throws IOException

Decrements the reference counting of this object. When reference counting hits 0, calls release().

Throws:

IOException

get

public final T get()

getRefCount

public final int getRefCount()

Returns the current reference count.

incRef

public final void incRef()

Increments the reference count. Calls to this method must be matched with calls to decRef().