org.apache.ojb.broker.cache
Class ObjectCacheEmptyImpl

java.lang.Object
  org.apache.ojb.broker.cache.ObjectCacheEmptyImpl

All Implemented Interfaces:

ObjectCache

public class ObjectCacheEmptyImpl

extends java.lang.Object

implements ObjectCache

This is an 'empty' ObjectCache implementation. Useful when caching was not desired.
NOTE: This implementation does not prevent infinite loops caused by 'circular references' of loaded object graphs. (this will change in versions > 1.0).

Implementation configuration properties:

Property Key	Property Values
-	-

Version:

$Id: ObjectCacheEmptyImpl.java,v 1.10 2003/12/31 12:01:56 arminw Exp $

Author:

Thomas Mahler

Constructor Summary

ObjectCacheEmptyImpl(PersistenceBroker broker, java.util.Properties prop)

Method Summary

void	cache(Identity oid, java.lang.Object obj) makes object obj persistent to the Objectcache under the key oid.
void	clear() clear the ObjectCache.
java.lang.Object	lookup(Identity oid) Lookup object with Identity oid in objectTable.
void	remove(Identity oid) removes an Object from the cache.
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

ObjectCacheEmptyImpl

public ObjectCacheEmptyImpl(PersistenceBroker broker,
                            java.util.Properties prop)

Method Detail

cache

public void cache(Identity oid,
                  java.lang.Object obj)

Description copied from interface: ObjectCache

makes object obj persistent to the Objectcache under the key oid.

Specified by:

cache in interface ObjectCache

See Also:

ObjectCache.cache(Identity, Object)

lookup

public java.lang.Object lookup(Identity oid)

Description copied from interface: ObjectCache

Lookup object with Identity oid in objectTable. returns null if no matching id is found

Specified by:

lookup in interface ObjectCache

See Also:

ObjectCache.lookup(Identity)

remove

public void remove(Identity oid)

Description copied from interface: ObjectCache

removes an Object from the cache.

Specified by:

remove in interface ObjectCache

Parameters:

oid - Identity of the object to be removed.

See Also:

ObjectCache.remove(Identity)

clear

public void clear()

Description copied from interface: ObjectCache

clear the ObjectCache.

Specified by:

clear in interface ObjectCache

See Also:

ObjectCache.clear()

toString

public java.lang.String toString()