de.lmu.ifi.dbs.elki.persistent

Class LRUCachePageFileFactory<P extends Page>

java.lang.Object

de.lmu.ifi.dbs.elki.persistent.LRUCachePageFileFactory<P>

Type Parameters:

P - Page type

All Implemented Interfaces:

PageFileFactory<P>

public class LRUCachePageFileFactory<P extends Page>
extends Object
implements PageFileFactory<P>

Page file factory for memory page files.

Author:

Erich Schubert

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	LRUCachePageFileFactory.Parameterizer Parameterization class.

Field Summary

Fields

Modifier and Type	Field and Description
private int	cacheSize Cache size, in bytes.
private PageFileFactory<P>	pageFileFactory Inner page file factory.

Constructor Summary

Constructors

Constructor and Description
LRUCachePageFileFactory(PageFileFactory<P> pageFileFactory, int cacheSize) Constructor.

Method Summary

Modifier and Type	Method and Description
int	getPageSize() Query the page size.
PageFile<P>	newPageFile(Class<P> cls) Make a new page file.

Methods inherited from class java.lang.Object

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

Field Detail

pageFileFactory

private PageFileFactory<P extends Page> pageFileFactory

Inner page file factory.

cacheSize

private int cacheSize

Cache size, in bytes.

Constructor Detail

LRUCachePageFileFactory

public LRUCachePageFileFactory(PageFileFactory<P> pageFileFactory,
                               int cacheSize)

Constructor.

Parameters:

pageFileFactory - Inner page file

cacheSize - Size of cache, in bytes.

Method Detail

newPageFile

public PageFile<P> newPageFile(Class<P> cls)

Description copied from interface: PageFileFactory

Make a new page file.

Specified by:

newPageFile in interface PageFileFactory<P extends Page>

Parameters:

cls - Page class

Returns:

Page file

getPageSize

public int getPageSize()

Description copied from interface: PageFileFactory

Query the page size.

Specified by:

getPageSize in interface PageFileFactory<P extends Page>

Returns:

page size