org.torweg.pulse.configuration
Class VFSFileCache

java.lang.Object
  org.torweg.pulse.configuration.VFSFileCache

public final class VFSFileCache
extends java.lang.Object

a simple in memory cache for VirtualFiles used by PoorMansCache.

Version:

$Revision: 2061 $

Author:

Thomas Weber

Constructor Summary

protected

VFSFileCache() creates a new VFSFileCache.

Method Summary

protected java.io.InputStream	cacheFile(VirtualFile f) caches the given virtual file.
protected void	cleanUp(TimeSpan maxInactive) cleans the cache (is called by PoorMansCache).
protected java.io.InputStream	getCached(VirtualFile f) checks whether the cache contains the given virtual file.
protected long	getCacheSize() returns the size of the cache.

Methods inherited from class java.lang.Object

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

Constructor Detail

VFSFileCache

protected VFSFileCache()

creates a new VFSFileCache.

Method Detail

getCached

protected java.io.InputStream getCached(VirtualFile f)

checks whether the cache contains the given virtual file.

Parameters:

f - the file to check for

Returns:

the InputStream to the cached file or null, if the file is not cached

cacheFile

protected java.io.InputStream cacheFile(VirtualFile f)
                                 throws java.io.IOException

caches the given virtual file.

Parameters:

f - the file to be cached

Returns:

the InputStream

Throws:

java.io.IOException - on errors creating the entry

getCacheSize

protected long getCacheSize()

returns the size of the cache.

Returns:

the size

cleanUp

protected void cleanUp(TimeSpan maxInactive)

cleans the cache (is called by PoorMansCache).

Parameters:

maxInactive - the maximum inactivity timespan for cache entries