org.jboss.cache.eviction
Class AopLRUAlgorithm

java.lang.Object
  org.jboss.cache.eviction.LRUAlgorithm (src) 
      org.jboss.cache.eviction.AopLRUAlgorithm

All Implemented Interfaces:

EvictionAlgorithm (src)

public class AopLRUAlgorithm

extends LRUAlgorithm (src)

LRUAlgorithm specific to TreeCacheAop. Overriding couple of hooks to customize the algorithm such that it works correctly when using TreeCacheAop. The basic strategy for the AOP-specific case are:

• When a node is visited, it will check if it is an AOPInstance node. If it is, then it is an AOP node. In that case, we will update all children nodes' time stamp to synchronize with parent node.
• When a node is to be evicted, it will check if it an AOP node. If it is, we will traverse through the children nodes to see if their timestamp is younger. If it is younger, then we must not evict the whol aop node (i.e., parent node is not evicted either). Furthermore, we should synchronize the whole tree.

AopLRUAlgorithm

public AopLRUAlgorithm()

getAssociatedEvictNode

protected java.util.Set getAssociatedEvictNode(Fqn (src)  fqn)

Hook for evict.

Parameters:

fqn -

Returns:

Set of associated node to evict as well in string

preAddedNodes

protected boolean preAddedNodes(Fqn (src)  fqn)

Hook for processAddedNodes.

preVisitedNodes

protected boolean preVisitedNodes(Fqn (src)  fqn,
                                  long stamp)

Hook for processVisitedNodes

Parameters:

fqn -

Returns:

true if it is successful