org.deegree.io.dbaseapi
Class DBaseIndex.Cache

java.lang.Object
  org.deegree.io.dbaseapi.DBaseIndex.Cache

Enclosing class:

DBaseIndex

public class DBaseIndex.Cache
extends Object

Inner class for the cache. The cache remembers recently used pages.

Nested Class Summary

(package private) class

DBaseIndex.Cache.Item Inner class for the cache items

Constructor Summary

DBaseIndex.Cache()
Create a new cache

Method Summary

void	flush() Flush the cache (eg. store modified pages)
org.deegree.io.dbaseapi.DBaseIndex.Page	get(int number) Get a page form the cache
void	insert(int number, org.deegree.io.dbaseapi.DBaseIndex.Page p) Insert a new item into the cache
(package private) void	removeItem() Remove an item from the cache (this method searches for the last used item)

Methods inherited from class java.lang.Object

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

Constructor Detail

DBaseIndex.Cache

public DBaseIndex.Cache()

Create a new cache

Method Detail

removeItem

void removeItem()
          throws IOException

Remove an item from the cache (this method searches for the last used item)

Throws:

IOException

insert

public void insert(int number,
                   org.deegree.io.dbaseapi.DBaseIndex.Page p)
            throws IOException

Insert a new item into the cache

Throws:

IOException

get

public org.deegree.io.dbaseapi.DBaseIndex.Page get(int number)

Get a page form the cache

Returns:

returns the addressed page or null

flush

public void flush()

Flush the cache (eg. store modified pages)