com.orientechnologies.orient.core.storage.cache.local.twoq

Class ConcurrentLRUList

java.lang.Object

com.orientechnologies.orient.core.storage.cache.local.twoq.ConcurrentLRUList

All Implemented Interfaces:

LRUList, Iterable<OCacheEntry>

public class ConcurrentLRUList
extends Object
implements LRUList

Concurrent implementation of LRUList.

Author:

Artem Orobets (enisher-at-gmail.com)

Constructor Summary

Constructors

Constructor and Description
ConcurrentLRUList()

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	contains(long fileId, long filePosition)
OCacheEntry	get(long fileId, long pageIndex)
OCacheEntry	getLRU()
Iterator<OCacheEntry>	iterator()
void	putToMRU(OCacheEntry cacheEntry)
OCacheEntry	remove(long fileId, long pageIndex)
OCacheEntry	removeLRU()
Iterator<OCacheEntry>	reverseIterator()
int	size()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Constructor Detail

ConcurrentLRUList

public ConcurrentLRUList()

Method Detail

get

public OCacheEntry get(long fileId,
                       long pageIndex)

Specified by:

get in interface LRUList

remove

public OCacheEntry remove(long fileId,
                          long pageIndex)

Specified by:

remove in interface LRUList

putToMRU

public void putToMRU(OCacheEntry cacheEntry)

Specified by:

putToMRU in interface LRUList

removeLRU

public OCacheEntry removeLRU()

Specified by:

removeLRU in interface LRUList

getLRU

public OCacheEntry getLRU()

Specified by:

getLRU in interface LRUList

clear

public void clear()

Specified by:

clear in interface LRUList

contains

public boolean contains(long fileId,
                        long filePosition)

Specified by:

contains in interface LRUList

size

public int size()

Specified by:

size in interface LRUList

iterator

public Iterator<OCacheEntry> iterator()

Specified by:

iterator in interface LRUList

Specified by:

iterator in interface Iterable<OCacheEntry>

reverseIterator

public Iterator<OCacheEntry> reverseIterator()

Specified by:

reverseIterator in interface LRUList

Returns:

Iterator which iterates from head to tail, or in other words from least recently used to most recently used pages.