LRUCachePageFileFactory (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

java.lang.Object
- elki.persistent.LRUCachePageFileFactory<P>

Type Parameters:

P - Page type

All Implemented Interfaces:

PageFileFactory<P>
```
public class LRUCachePageFileFactory<P extends Page>
extends java.lang.Object
implements PageFileFactory<P>
```
Page file factory for memory page files.

Since:

0.6.0

Author:

Erich Schubert

Nested Class Summary

Nested Classes
Modifier and Type Class Description

static class LRUCachePageFileFactory.Par
Parameterization class.

Field Summary

Fields
Modifier and Type Field Description

private int cacheSize
Cache size, in bytes.

private PageFileFactory<P> pageFileFactory
Inner page file factory.

Constructor Summary

Constructors
Constructor Description

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

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`int`	`getPageSize()`	Query the page size.
`PageFile<P>`	`newPageFile(java.lang.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(java.lang.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