Hi all.
The thing I'm trying to do is render an object of type image/png to the
response without resorting to writing a custom service.
I already did it using a service, what i do not like of it is that
services are (obviously) stateless, not pooled, so i can't use them in
the flexible way that Tapestry got me accustomed to when dealing with pages.
What i would like would be, from my page listener, to get an injected
"RawRenderingPage", set its "source" parameter to, e.g. an open
inputstream, and activate it. It would then copy the source inputstream
to the response outputstream.
Problem is, the page service, when calling renderComponent on my page
RawRenderingPage, passes a ResponseWriter already initialized with the
Writer obtained calling getWriter from the HttpServletResponse; this
prevents me from calling getOutputStream on the same (injected)
HttpServletResponse.
My idea would be to patch the ResponseWriter or the code creating it to
lazily call HttpServletResponse.getWriter only when actually needed the
first time, letting me get an handle on the response output stream in my
page, if i want.
Before trying, i thought maybe someone had already analyzed the problem
and eventually studied a better approach.
Regards
Francesco
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