org.fjank.jcache
Class CacheObject

java.lang.Object
  java.lang.ref.Reference<T>
      java.lang.ref.WeakReference
          org.fjank.jcache.CacheObject

Direct Known Subclasses:

StreamCacheObject

public class CacheObject
extends WeakReference

Overrides some of the methods for referenceobjects.

Author:

Frank Karlstrøm

Constructor Summary

CacheObject(Object key, Object referent, CacheGroup group, CacheRegion region, ReferenceQueue q)
Creates a new CacheObject object.

Method Summary

void	clear()
void	destroy() destroys this object
boolean	equals(Object arg0) accesses and refCount is ignored.
Object	get() gets the wrapped real object.
int	getAccesses() returns the number of total accesses to this cacheobject
AttributesImpl	getAttributes() gets the attributes for this object
CacheGroup	getGroup() gets the group this object belongs to
Object	getKey() gets the name of this object
int	getRefCount() returns an indication on how many object keep an reference to this object.
CacheRegion	getRegion()
void	invalidate() invalidates this object
boolean	needsLoading() returns a boolean indication wether the object needs loading or not.
void	resetRefCount() Resets the refcount.
void	setAttributes(Attributes attributes)
void	setAttributes(AttributesImpl attributes) sets the attributes for this object
String	toString() returns a string representation of this object

Methods inherited from class java.lang.ref.Reference

enqueue, isEnqueued

Methods inherited from class java.lang.Object

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

Constructor Detail

CacheObject

public CacheObject(Object key,
                   Object referent,
                   CacheGroup group,
                   CacheRegion region,
                   ReferenceQueue q)

Creates a new CacheObject object.

Parameters:

key - the name of this object

referent - the actuall object

group - the group this object belongs to

q - the ReferenceQueue this object goes to wneh the GC determines that this object is garbage.

Method Detail

equals

public boolean equals(Object arg0)

accesses and refCount is ignored.

Overrides:

equals in class Object

See Also:

Object.equals(java.lang.Object)

needsLoading

public boolean needsLoading()

returns a boolean indication wether the object needs loading or not.

Returns:

a boolean indication wether the object needs loading or not.

destroy

public void destroy()

destroys this object

invalidate

public void invalidate()

invalidates this object

get

public Object get()

gets the wrapped real object.

Overrides:

get in class Reference

Returns:

the wrapped real object.

toString

public String toString()

returns a string representation of this object

Overrides:

toString in class Object

Returns:

a string representation of this object

getKey

public Object getKey()

gets the name of this object

Returns:

the name of this object

setAttributes

public void setAttributes(AttributesImpl attributes)

sets the attributes for this object

Parameters:

attributes - the attributes to set.

setAttributes

public void setAttributes(Attributes attributes)

getAttributes

public AttributesImpl getAttributes()

gets the attributes for this object

Returns:

the attributes for this object

getGroup

public CacheGroup getGroup()

gets the group this object belongs to

Returns:

the group this object belongs to

getAccesses

public int getAccesses()

returns the number of total accesses to this cacheobject

Returns:

the number of total accesses to this cacheobject

getRefCount

public int getRefCount()

returns an indication on how many object keep an reference to this object. if this number is positive, its only an indication, not a real numer. if its 0, the refcount is 0.

Returns:

an indication on how many object keep an reference to this object.

resetRefCount

public void resetRefCount()

Resets the refcount.

getRegion

public CacheRegion getRegion()

Returns:

clear

public void clear()

Overrides:

clear in class Reference