What is this?

This is a proof of concept for a Schematron extension to the LemMinX XML language server.

It uses schxslt and Saxon-HE in order to validate an XML document against a schema.

Usage

1. In VS Code, install Red Hat's XML extension
2. Run mvn clean package, which generates a shaded uber jar in ./target/lemminx-schematron-0.1.0-SNAPSHOT.jar
3. Add the following to your package.json:

"xml.extension.jars": [
  "/path/to/lemminx-schematron/lemminx-schematron-0.1.0-SNAPSHOT.jar",
],

4. Add the following snippet to your XML, with href pointing to your Schematron schema:

<?xml-model href="./my-schematron.sch"?>

5. The XML document should be validated. If the schema file is invalid, a diagnostic will appear at the top of the document indicating this.

Limitations

• You can only validate with local .sch files
• Not tested thoroughly
• The .jar is prohibitively large to include as a part of the standard LemMinX distribution