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ISO Schematron schema for DITA

ISO Schematron schema for DITA 1.1 and 1.2 that handles cases that DTDs or XML Schemas cannot control. The current implementation covers for example:

• nesting links inside links or titles
• deprecated attributes and attributes
• attributes not intended for author use.

Usage

The schema comes in four parts,

• dita-1.1-for-xslt1.sch
• dita-1.2-for-xslt1.sch
• dita-1.1-for-xslt2.sch
• dita-1.2-for-xslt2.sch

for different DITA and XSLT query binding versions. The schema has four phases:

mandatory

constraints in the DITA language specification prose

recommendation

constraints and recommendations in the DITA language specification prose

author

recommendations for authors

other

combination of recommendation and author phases

Validation is also available as a DITA-OT plug-in.

Source extensions

The Schematron source uses the following extension attributes in http://github.com/jelovirt/dita-schematron namespace:

e:extends

List of phase element identifiers. The contents of the referenced phase elements are imported as the first children of the phase, in the order.

e:ditaVersions

List of DITA versions. The attribute is used to filter out pattern elements which are not applicable for a given DITA version..

The extension attributes are stripped by the build process from the distributed schema files.