org.deegree_impl.io.shpapi
Class DBaseIndex.Cache

java.lang.Object
  org.deegree_impl.io.shpapi.DBaseIndex.Cache

Enclosing class:

DBaseIndex

public class DBaseIndex.Cache

extends java.lang.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

Field Summary

private java.util.LinkedList	cacheItems
private java.util.Hashtable	pages

Constructor Summary

DBaseIndex.Cache()
Create a new cache

Method Summary

void	flush() Flush the cache (eg. store modified pages)
DBaseIndex.Page	get(int number) Get a page form the cache
void	insert(int number, 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

Field Detail

pages

private java.util.Hashtable pages

cacheItems

private java.util.LinkedList cacheItems

Constructor Detail

DBaseIndex.Cache

public DBaseIndex.Cache()

Create a new cache

Method Detail

removeItem

void removeItem()
          throws java.io.IOException

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

Throws:

java.io.IOException

insert

public void insert(int number,
                   DBaseIndex.Page p)
            throws java.io.IOException

Insert a new item into the cache

Throws:

java.io.IOException

get

public DBaseIndex.Page get(int number)

Get a page form the cache

flush

public void flush()

Flush the cache (eg. store modified pages)