Re: [xsl] xsl can't get graphic to load from xml file

Subject: Re: [xsl] xsl can't get graphic to load from xml file
From: josh higgins <doopsterus@xxxxxxxxx>
Date: Thu, 7 Apr 2005 13:28:15 -0700 (PDT)
Ok, I don't think that I mentioned that I am new to
this xml and xsl thing.  So basically what you are
saying is that I cannot have a dynaminc path (one read
in from the xsl sheet) and place it in the url?  My
absolute path is already in the xml.  There is no
generation what-so-ever. So can this xml data be read
into local xsl:variable and then used in the url?  

I am using apache.xml.fop to generate my pdf off of my

--- Eliot Kimber <ekimber@xxxxxxxxxxxxxxxxxxx> wrote:
> There is no simple single solution to this problem
> because it depends 
> entirely on the relative locations of the FO
> instance (if you are 
> generating an instance) and the graphic *at the time
> you render them*, 
> not at the time you generate the FO.
> Therefore, for different processing environments, it
> might be most 
> appropriate to generate an absolute path and in
> others you have to 
> generate a relative path relative to some
> pre-defined location.
> In addition, doing path processing is generally
> easier in a language 
> like Java than in XSLT (although you can do it in
> XSLT, of course). For 
> example, we have utility Java libraries that do
> things like compare two 
> paths and return the shortest relative path. We then
> expose these 
> through Saxon extension functions so that in the
> XSLT we can easily 
> generate relative paths to graphics given some base
> path (normally 
> passed in as a parameter to the XSLT process).
> For one customer we have to provide an
> FO-generation-time option of 
> whether graphic paths are relative or absolute
> because different users 
> of the code have different business rules.
> Finally, remember that relative paths will be
> relative to the location 
> of the FO instance, not the original XML document
> (unless you set the 
> xml:base attribute in the FO instance to be the
> location of the orignal 
> XML document), which can be a problem, especially if
> you generate the FO 
> instance and then move it somewhere else before
> rendering it.
> This is all presuming that your graphics are not
> managed in some 
> URL-accessible content store that would allow you to
> specify 
> location-independent absolute URIs. In essence, all
> the W3C 
> specifications assume that this is the case, even
> though for most users 
> it is never the case.
> Cheers,
> Eliot
> -- 
> W. Eliot Kimber
> Professional Services
> Innodata Isogen
> 9390 Research Blvd, #410
> Austin, TX 78759
> (512) 372-8155
> ekimber@xxxxxxxxxxxxxxxxxxx

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