Xml schema validating parser

13-Nov-2016 08:18

Apart from the built-in DTD support in parsers, lxml currently supports three schema languages: DTD, Relax NG and XML Schema.All three provide identical APIs in lxml, represented by validator classes with the obvious names.As you can modify the content of the instance editor, different instances can be tested and validation error messages analysed.The example's main() function creates the standard instance of QApplication.The user can select the valid or invalid instance document, change it and validate it again.

This means that the XML file itself must either contain a DTD or must reference a DTD to make this work.

Then it creates an instance of the mainwindow class, shows it, and starts the Qt event loop: slot the content of the instance selection is adapted to the selected schema and the corresponding schema is loaded from the resource file and displayed in the schema viewer.

At the end of the method a revalidation is triggered.

lxml also provides support for ISO-Schematron, based on the pure-XSLT skeleton implementation of Schematron: There is also basic support for The parser in lxml can do on-the-fly validation of a document against a DTD or an XML schema.

The DTD is retrieved automatically based on the DOCTYPE of the parsed document.

This means that the XML file itself must either contain a DTD or must reference a DTD to make this work.Then it creates an instance of the mainwindow class, shows it, and starts the Qt event loop: slot the content of the instance selection is adapted to the selected schema and the corresponding schema is loaded from the resource file and displayed in the schema viewer.At the end of the method a revalidation is triggered.lxml also provides support for ISO-Schematron, based on the pure-XSLT skeleton implementation of Schematron: There is also basic support for The parser in lxml can do on-the-fly validation of a document against a DTD or an XML schema.The DTD is retrieved automatically based on the DOCTYPE of the parsed document.One day, when XML:: Schema is completed I will replace this module with a wrapper around it.