Re: how to use a CInclude template to include resources

[Jorg Heymans]

Norman Barker wrote:
Hi,
I am rephrasing this to be clearer, thanks Derek.
I have set up several pipelines and readers within cocoon.
I can include XML content without any problems using a CInclude template,
as in the following example (not the real code, just dummy names).
<data xmlns:cinclude="http://apache.org/cocoon/include/1.0";>
   <MyCollection1>
       <cinclude:include src="cocoon:/test1" element="data1"/>
   </MyCollection1>
   <MyCollection2>
       <cinclude:include src="cocoon:/test2" element="data2"/>
   </MyCollection2>
</data>
so cocoon:/test1 returns XML and this fits in nicely.
however when I want to include image content within the template I would 
like to
do either of the two things below as in the case of cocoon:/test2 being 
a reader;

1) Save the image returned from the reader in a temporary location that 
is cleaned
by Cocoon after the request and a URL to this resouces is stored in the 
XML (an
example of this would help me alot)
This sounds like something flow could do.
so you cinclude:include src="cocoon:/pipelineWithMyFlowFunction" instead 
of cocoon:/test1.
In this flow function you generate your image and write it to a 
temporary file (using processPipelineTo), you then return your file 
identifier so it gets included in the document.


2) store a BaseBinary64 version of this image in the XML, or just the 
pixel values
modify your reader to spit out base64 seems the easiest thing to do here.
Finally, is I post an XML document to Cocoon which looks like for example
<root>
  <request1>...</request1>
   <request2>...<request2>
</root>
is there a generator that will iterate over this document and make each 
of the requests, or do
I have to write a custom generator? I don't expect the user to make 
multiple requests to the
server, just to wrap up all the requests in one go and send them to the 
server.  So can I iterate
over this?
If this iteration definition needs to come from the outside world then 
you could write an xsl that transforms
<root>
  <req1></req1>
  <req2></req2>
...
into
<mycollection>
  <cinclude:include src="the contents of element req1"/>
  <cinclude:include src=cocoon:/"the contents of element req2"/>
</mycollection>
and then have the cinclude transform do it's work.

HTH
Jorg
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