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The following page has been changed by MarioIvankovits: http://wiki.apache.org/jakarta-commons/VfsCacheStrategy New page: = VFS - CacheStragey = One problem with libraries like vfs is that they cache some data to avoid successive access to the real file - simply to speed up things. This cache might get stale - no it GET stale. Currently VFS provides three strategies to workaround it: * manual * on resolve (the default) * on call Note: It is not possible to use {{{VFS.getManager}}} to configure the cacheStrategy. You have to create your own static class to create it. == manual cache strategy == Setup {{{ StandardFileSystemManager fs = new StandardFileSystemManager(); fs.setCacheStrategy(CacheStrategy.MANUAL); fs.init(); }}} using this setup you have to use {{{fileObject.refresh()}}} to refresh your object with the filesystem == on_resolve == Setup {{{ StandardFileSystemManager fs = new StandardFileSystemManager(); fs.setCacheStrategy(CacheStrategy.ON_RESOLVE); fs.init(); }}} every time you call {{{fs.resolveFile()}}} the file data will be refreshed. You still can use {{{fileObject.refresh()}}} to refresh the data on demand. == on_call == Setup {{{ StandardFileSystemManager fs = new StandardFileSystemManager(); fs.setCacheStrategy(CacheStrategy.ON_CALL); fs.init(); }}} Every time you call a method on the resolve file object the data will be refreshed with the filesystem. This will give you the behaviour you might expect from a local file but also might be a hughe performance loss as it will greatly increase the network load. You also can archive this cache strategy if you pack the file object in an {{{org.apache.commons.vfs.cache.OnCallRefreshFileObject}}} {{{ FileObject fo = VFS.getManager().resolveFile("...."); OnCallRefreshFileObject foc = new OnCallRefreshFileObject(fo); }}} the difference to the above is, that in the first case you will always get the same file object instance and thus you can synchronize against it. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
