com.sun.enterprise.admin.util.cache

Class AdminCacheWeakReference

java.lang.Object

com.sun.enterprise.admin.util.cache.AdminCacheWeakReference

All Implemented Interfaces:

AdminCache

public class AdminCacheWeakReference
extends Object
implements AdminCache

AdminCache based on week references and backgrounded by AdminCacheFileStore layer.
Max one object representation of cached data are stored by this implementation. If different type is requested, it will be reloaded from file store using AdminCacheFileStore.

Author:

mmares

Method Summary

Methods

Modifier and Type	Method and Description
boolean	contains(String key) Checked if content is in the cache.
<A> A	get(String key, Class<A> clazz) Retrieve data from cache.
static AdminCacheWeakReference	getInstance()
Date	lastUpdated(String key) Date when was cached data last updated.
void	put(String key, Object data) Puts data to cache.

Methods inherited from class java.lang.Object

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

Method Detail

get

public <A> A get(String key,
        Class<A> clazz)

Description copied from interface: AdminCache

Retrieve data from cache.

Specified by:

get in interface AdminCache

Parameters:

key - in the cache

clazz - Cache data will be converted to requested type using appropriate AdminCacheObjectProvider

Returns:

Cached data converted to requested type or null if not cached

put

public void put(String key,
       Object data)

Description copied from interface: AdminCache

Puts data to cache.

Specified by:

put in interface AdminCache

Parameters:

key - in the cache

data - Cached data will be converted to raw bytes using appropriate AdminCacheObjectProvider

contains

public boolean contains(String key)

Description copied from interface: AdminCache

Checked if content is in the cache.

Specified by:

contains in interface AdminCache

Parameters:

key - in the cache

lastUpdated

public Date lastUpdated(String key)

Description copied from interface: AdminCache

Date when was cached data last updated.

Specified by:

lastUpdated in interface AdminCache

Parameters:

key - in the cache

Returns:

Date of last update or null if does not exist in cache

getInstance

public static AdminCacheWeakReference getInstance()