Frank, There is an interesting feature of Schematron's design useful in a case like yours, namely that within a pattern, only one rule may apply to any element, and the first rule wins. This means we can pre-empt the application of rules by writing other rules. For example: <sch:pattern id="Check_LI"> <sch:rule context="*[exists(@conref)]//li | li[exists(@conref)]"/> <sch:rule context="li"> <sch:assert test="exists(*)">li must have children</sch:assert> </sch:rule> </sch:pattern> The second rule says "an li must have children". The first rule intervenes for li elements that have @conref or an ancestor with @conref - it does no checking so it is silent. Try it and see how it goes -- Cheers, Wendell On Wed, Feb 22, 2023 at 7:35 AM Frank Dissinger < frank.dissinger@cgs-oris.com> wrote:
Hi all,
I need a Schemtron rule which indicates an error when <li> elements do not have any child elements. No error schould be indicated for <li> elements with an "conkeyref" attribute and also for <li> elements which are children of any element with a "conkeyref" attribute.
I have defined two separate rules...
<sch:pattern id="Check_LI2"> <sch:rule context="*li[not(@conkeyref)]*"> <sch:assert test="*">List does not contain any child elements</sch:assert> </sch:rule> </sch:pattern>
<sch:pattern id="Check_LI3"> <sch:rule context="*li[not(parent::*[@conkeyref])]*"> <sch:assert test="*">List does not contain any child elements</sch:assert> </sch:rule>
</sch:pattern>
... but I think I need to combine them into a single rule with an OR or AND operator.
<sch:pattern id="Check_LI3"> <sch:rule context="*li[not(@conkeyref)]* *OR **li[not(parent::*[@conkeyref])] *"> <sch:assert test="*">List does not contain any child elements</sch:assert> </sch:rule>
</sch:pattern>
However, this syntax is invalid. Can somebody help me?
Regards,
Frank --
*Frank Dissinger*
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