oracle.spatial.network.lod

Class LRUCachingHandler

java.lang.Object

oracle.spatial.network.lod.LRUCachingHandler

All Implemented Interfaces:

CachingHandler

public class LRUCachingHandler
extends java.lang.Object
implements CachingHandler

This class implements the Least Recently Used (LRU) caching handler.

Since:

11gR1

Constructor Summary

Constructors

Constructor and Description
LRUCachingHandler()

Method Summary

Modifier and Type	Method and Description
java.lang.Object	clone() Creates and returns a copy of this CachingHandler object.
int[]	getPartitionsToFlushOut(java.util.Collection<java.lang.Integer> residentPartitions, int minNumNodesToFlushOut) Returns the IDs of the partitions to be flushed out.
void	updateRank(LogicalPartition partition) Updates the rank of the partition in the cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

LRUCachingHandler

public LRUCachingHandler()

Method Detail

getPartitionsToFlushOut

public int[] getPartitionsToFlushOut(java.util.Collection<java.lang.Integer> residentPartitions,
                                     int minNumNodesToFlushOut)
                              throws LODNetworkException

Description copied from interface: CachingHandler

Returns the IDs of the partitions to be flushed out.

Specified by:

getPartitionsToFlushOut in interface CachingHandler

Parameters:

residentPartitions - resident partitions, which are the partitions to be excluded from the returned list.

Returns:

IDs of the partitions to be flushed out.

Throws:

LODNetworkException

updateRank

public void updateRank(LogicalPartition partition)

Description copied from interface: CachingHandler

Updates the rank of the partition in the cache. The rank will be used to determine which partitions to be flushed out of the cache when getPartitionsToFlushOut() is called.

Specified by:

updateRank in interface CachingHandler

Parameters:

partition - the partition object whose rank is to be updated

clone

public java.lang.Object clone()

Description copied from interface: CachingHandler

Creates and returns a copy of this CachingHandler object.

Specified by:

clone in interface CachingHandler

Overrides:

clone in class java.lang.Object

Returns: