com.maxmind.db

Class CHMCache

java.lang.Object

com.maxmind.db.CHMCache

All Implemented Interfaces:

NodeCache

public class CHMCache
extends Object
implements NodeCache

A simplistic cache using a ConcurrentHashMap. There's no eviction policy, it just fills up until reaching the specified capacity (or close enough at least, bounds check is not atomic :)

Nested Class Summary

Nested classes/interfaces inherited from interface com.maxmind.db.NodeCache

NodeCache.Loader

Constructor Summary

Constructors

Constructor and Description
CHMCache()
CHMCache(int capacity)

Method Summary

Modifier and Type	Method and Description
Object	get(int key, NodeCache.Loader loader) Get a value from the cache, loading it if necessary.

Methods inherited from class java.lang.Object

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

Constructor Detail

CHMCache

public CHMCache()

CHMCache

public CHMCache(int capacity)

Method Detail

get

public Object get(int key,
                  NodeCache.Loader loader)
           throws IOException

Description copied from interface: NodeCache

Get a value from the cache, loading it if necessary.

Specified by:

get in interface NodeCache

Parameters:

key - the cache key

loader - the loader to use if the key is not in cache

Returns:

the cached or loaded value

Throws:

IOException - if loading fails