net.spy.cache
Class DiskCache

java.lang.Object
  java.util.AbstractMap
      net.spy.cache.DiskCache

All Implemented Interfaces:

Map

public class DiskCache

extends AbstractMap

Simple local disk caching. This is used for terribly simple caches with no expiration dates on objects. Things go in and they stay in.

Nested Class Summary

Nested classes inherited from class java.util.Map

Map.Entry

Constructor Summary

DiskCache(String basedir)
Get an DiskObject using the given directory.

DiskCache(String basedir, int lruCacheSize)
Get a DiskCache using the given directory with a backing LRU cache of the specified size.

Method Summary

Set	entrySet()
Object	get(Object key) Get an object from the cache.
String	getBaseDir() Get the base directory which this cache is watching.
Object	getObject(String key) Deprecated. use get(Object) instead
Object	put(Object k, Object v) Store an object in the cache.
void	storeObject(String key, Object o) Deprecated. use put(Object,Object) instead

Methods inherited from class java.util.AbstractMap

clear, clone, containsKey, containsValue, equals, hashCode, isEmpty, keySet, putAll, remove, size, toString, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DiskCache

public DiskCache(String basedir)

Get an DiskObject using the given directory.

DiskCache

public DiskCache(String basedir,
                 int lruCacheSize)

Get a DiskCache using the given directory with a backing LRU cache of the specified size.

Parameters:

basedir - the base directory for the disk cache

lruCacheSize - the size of the LRU cache holding recently accessed objects

Method Detail

getBaseDir

public String getBaseDir()

Get the base directory which this cache is watching.

put

public Object put(Object k,
                  Object v)

Store an object in the cache.

Parameters:

k - object key

v - value

Returns:

the old object stored in that location (if any)

storeObject

public void storeObject(String key,
                        Object o)
                 throws IOException

Deprecated. use put(Object,Object) instead

Old API for storing.

Throws:

IOException

get

public Object get(Object key)

Get an object from the cache.

Returns:

the object, or null if there's no such object

entrySet

public Set entrySet()

getObject

public Object getObject(String key)

Deprecated. use get(Object) instead

Old API for getting objects.