[xwiki-users] Upload large files to target location

Hi, I'd like to use XWiki as the front-end to an application that uses a database and file-store separate to XWiki's. I have been very successful wrapping up the database interactions with groovy and velocity scripts. However, I also need to allow users to upload large (>300Mb) files. These files would not be attachments into XWiki, but would go directly into the separate filesystem. Is there support to handle uploading large files in this way? I see that XWiki includes a file upload widget (http://platform.xwiki.org/xwiki/bin/view/DevGuide/HTML5Upload), which looks very close to what I need, but this seems to be for XWiki attachments only. Any suggestions would be greatly appreciated, Bryn