org.apache.velocity.runtime.resource

Interface ResourceCache

All Known Implementing Classes:

ResourceCacheImpl

public interface ResourceCache

Interface that defines the shape of a pluggable resource cache for the included ResourceManager

Version:

$Id: ResourceCache.java 1780734 2017-01-28 19:21:08Z cbrisson $

Author:

Geir Magnusson Jr.

Method Summary

Modifier and Type	Method and Description
void	clear() Removes all of the resources from this cache.
Iterator	enumerateKeys() returns an Iterator of Keys in the cache.
Resource	get(Object resourceKey) retrieves a Resource from the cache
void	initialize(RuntimeServices rs) initializes the ResourceCache.
Resource	put(Object resourceKey, Resource resource) stores a Resource in the cache
Resource	remove(Object resourceKey) removes a Resource from the cache

Method Detail

initialize

void initialize(RuntimeServices rs)

initializes the ResourceCache. Will be called before any utilization

Parameters:

rs - RuntimeServices to use for logging, etc

get

Resource get(Object resourceKey)

retrieves a Resource from the cache

Parameters:

resourceKey - key for Resource to be retrieved

Returns:

Resource specified or null if not found

put

Resource put(Object resourceKey,
             Resource resource)

stores a Resource in the cache

Parameters:

resourceKey - key to associate with the Resource

resource - Resource to be stored

Returns:

existing Resource stored under this key, or null if none

remove

Resource remove(Object resourceKey)

removes a Resource from the cache

Parameters:

resourceKey - resource to be removed

Returns:

stored under key

clear

void clear()

Removes all of the resources from this cache. The cache will be empty after this call returns.

Since:

2.0

enumerateKeys

Iterator enumerateKeys()

returns an Iterator of Keys in the cache.

Returns:

An Iterator of Keys in the cache.