org.apache.commons.vfs2.cache

Class WeakRefFilesCache

java.lang.Object

org.apache.commons.vfs2.provider.AbstractVfsComponent

org.apache.commons.vfs2.cache.AbstractFilesCache

org.apache.commons.vfs2.cache.SoftRefFilesCache

org.apache.commons.vfs2.cache.WeakRefFilesCache

All Implemented Interfaces:

Closeable, AutoCloseable, FilesCache, VfsComponent

public class WeakRefFilesCache
extends SoftRefFilesCache

This implementation caches every file as long as it is strongly reachable by the Java vm. As soon as the object is no longer reachable it will be discarded. In contrast to the SoftRefFilesCache this implementation might free resources faster as it doesn't wait until a memory limitation.

See Also:

WeakReference

Constructor Summary

Constructors

Constructor and Description
WeakRefFilesCache() Constructs a new instance.

Method Summary

Modifier and Type	Method and Description
protected Reference<FileObject>	createReference(FileObject file, ReferenceQueue<FileObject> refqueue) Constructs a new Reference.

Methods inherited from class org.apache.commons.vfs2.cache.SoftRefFilesCache

clear, close, getFile, getOrCreateFilesystemCache, putFile, putFileIfAbsent, removeFile, toString

Methods inherited from class org.apache.commons.vfs2.cache.AbstractFilesCache

touchFile

Methods inherited from class org.apache.commons.vfs2.provider.AbstractVfsComponent

getContext, getLogger, init, setContext, setLogger

Methods inherited from class java.lang.Object

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

Constructor Detail

WeakRefFilesCache

public WeakRefFilesCache()

Constructs a new instance.

Method Detail

createReference

protected Reference<FileObject> createReference(FileObject file,
                                                ReferenceQueue<FileObject> refqueue)

Description copied from class: SoftRefFilesCache

Constructs a new Reference.

Overrides:

createReference in class SoftRefFilesCache

Parameters:

file - a file object.

refqueue - a ReferenceQueue.

Returns:

a new Reference on the given input.