Hi all,

we are using for this usage a simple XSL trick:

  <xsl:template match="parameter[@role='variable-text']">
    <xsl:variable select="." name="id"></xsl:variable>
    <xsl:value-of select="//*[@id=$id]"/>
  </xsl:template>

How to use:
1) create your variable, wherever you want in your document, though it's
generally placed in the <info> header, for example <productname
xml:id="PN">Calenco</productname>
2) Call it: <parameter role="variable-text">PN</parameter>

You can combine this with profiling by using various profiled elements
inside the source element...

HTH,

*NeoDoc*
*Camille Bégnis*
[email protected]
Tél: +33 (0)4.42.52.24.20
5, rue de la Touloubre
13770 Venelles
France
http://www.neodoc.fr/
Le 24/01/2015 19:01, Aaron DaMommio a écrit :
> We are also, at Alcatel-Lucent/Motive, using a simple (ant)
> substitution. I'm finding that this is very flexible. I can make it
> happen during a build step that happens after xi:includes are
> resolved, and also can use ant's property system to set the values to
> be substituted. Each book's ant build.xml imports a global build file
> to get global properties, and has the option of setting those
> properties' values BEFORE the import, so that it can override the
> global settings for a substitution when needed. 
> --Aaron DaMommio
>
> On Fri, Jan 23, 2015 at 6:28 PM, Mary Tabasko <[email protected]
> <mailto:[email protected]>> wrote:
>
>     Hi, all.
>
>     Barton Wright said:
>
>     > But, to be honest, for the very large, thousand-page DocBook doc
>     > set I maintain, we found that the profiling overhead for simple
>     > variable substitution put far too much of a burden on our doc build
>     > times, and we gave up on it.[...]
>     >
>     > For variables, we ended up with a simple Perl script substitution
>     > that runs on a copy of our doc source files.
>
>     We also avoid profiling/conditionals because we have very large
>     docs, and the
>     two-pass processing is something we'd like to avoid. Two approaches
>     we have used involve having multiple files with the entities and
>     the desired
>     values in them, one for each variant.
>
>     Approach one: create a catalog file for each variant that resolves
>     a file entity
>     for the entity file (terrible sentence, sorry) to the desired
>     variant. Point to the
>     desired catalog at build time.
>
>     Approach two: (we use this for documents that are assembled out of
>     many
>     pieces into a staging area: simply copy the desired entity file
>     into the staging area
>     as a "prebuild" step.)
>
>     Hope that helps somebody. Good luck, Mary!
>
>     -- Mary Tabasko
>
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> --------------------------------------
> Aaron DaMommio: Husband, father, writer, juggler, and expert washer of
> dishes.
> - My blog: http://aarondamommio.blogspot.com
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