Oxygen XML Forum

Hi

I've been able to apply specialised conditional processing to elements (e.g. <p> elements) within a topic.

When I apply the conditional processing attribute to a topicref (to knock out the whole topic), I get an error.

Here's my map
I want to amend
to
but when I do, I get the message "E [Xerces] Attribute "route" must be declared for element type "topicref". "

From the error, it looks like I've forgotton to include the subject scheme map that contains the controlled values, but in fact the "plant.ditamap" is a topic map that contains the subject scheme map that contains these.

I've remembered to open the top map in the Maps Manager as well.

Oxygen seems happy to accept the specialised conditional values in the topics, but not on the topicref elements.

I've tried using an intermediary mini map between this map and the topic, and applying the profiling attribute to that, but it still isn't accepted.

Maybe the Open Toolkit doesn't yet support this?

Thanks

John

Hi John,

The @route attribute is not defined in the regular DITA DTDs.
So what you probably did was to define a DITA topic specialization in which you added the attribute as a specialization of the @props.
So probably each of your DITA topics point to the specialization DTDs (which define this extra attribute) instead of the regular DTDs.
You need to define such a DTD specialization also for the DITA Map DTDs and have DITA Maps reference those DTDs instead.

Because defining the constraints in the Subject Scheme is not enough, the Subject Scheme Map does not contribute to the validation of the DITA Map but to the processing stage.

Regards,
Radu

Thanks for your quick and helpful reply.

John

Just tried it, by copying across my small customisations from the topic.dtd file into the map.dtd file.

Works perfectly - thanks!

John

Hi John,

Glad it works.
Usually a DTD specialization is not done by modifying directly the base DTDs.
A specialization defines a new public ID which is referenced by all maps and this public ID is mapped in the DITA OT catalogs to the DITA DTDs.
As an example of a simple specialization which can be integrated as a DITA Open Toolkit plugin you can look at our MathML specialization (which allows editing MathML equations in DITA composite topics):
OXYGEN_INSTALL_DIR\frameworks\dita\DITA-OT\plugins\mathml

Regards,
Radu