Hi, thanks for for quick answer! I already played around with ResourceStreams, but my problem was that I couldn't do the bridge from a Stream to a Resource with a URL.
I should add, I'm not offering my ByteArrayResources as a download. I pass the content-type and filename, and (with the help I got from a user here) return it as INLINE. So, when the user clicks, the browser opens the filetype if it can (e.g. a picture, or a PDF with a built-in viewer). Also (and that's important) I then have a real URL which I can pass to Javascript functions. E.g. if the attachment is an mp3 or a video, I additionally use the URL of the ResourceLink to open a custom flash-player (JW Player).. I need a solid URL for that, for that session. When I played around I just couldn't manage to get that kind of URL when I worked with Streams. But I will give it another try. PS: I found this example a while ago, and wanted to implement my own IResourceStream to fetch the attachments from the DB, but the example is outdated and I couldn't figure out how to do it with a newer version of Wicket: http://goo.gl/imGrl 2012/8/16 Sven Meier <s...@meiers.net> > Take a look at DownloadLink and FileResourceStream, and replace all File > related API to your CouchDB access. > > Sven > > Michael M <generi...@gmail.com> schrieb: > > >Hi, in my project I use a CouchDB with files as attachments. Currently I > >have a page that makes those attachments available via a ResourceLink. > What > >I do when creating that page is: > > > > - I read all attachments (I get them as an InputStream), > > - create a byte[] out of it, > > - create a static Wicket ByteArrayResource > > - and put the link to that resource on the page. > > > >That works for smaller files, but a huge problem is of course: it's > static, > >and I get memory problems if the attachments get too big. Also, currently > >obviously each session does this. > > > >What I would like to do instead is: > > > > - create Resources that will load my attachments dynamically if the > link > > is clicked, > > - and add ResourceLinks to those resources on my page instead. > > - If possible, maybe deliver the attachments directly from the > > InputStream my CouchDB delivers, so I don't have to have any static > > byte-arrays on my server. > > > >That way I could make the page load immediately and deliver attachments > >only if required. > > > >I've wrapped my head around IResourceStreams, but I just can't see clear > >anymore and am confused about how to create those dynamic resources (also > >because some old examples don't work anymore with Wicket 1.5 or 6beta3). > > > >I'd be very thankful for a short example, or a hint about how to design > >this. Thank you! >
