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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

LRUCachingHandler()

Method Summary

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

Retruns 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 determin 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

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