Slides of the QuickFix presentation on the oXygen User Meetup at the pre-conference day at the XMLPrague 2015. See the main part of the presentation slides here http://de.slideshare.net/nottavy/quick-fixes

1. Nico Kutscherauerwww.schematron-quickfix.com
Schematron QuickFix
on XML Prague
Friday, 06 February 2015

2. Nico Kutscherauerwww.schematron-quickfix.com
My way to SQF
• sch:diagnostic in the Schematron ISO standard:
A natural-language message giving more specific details
concerning a failed assertion, such as found versus expected
values and repair hints.
• Basic structure provided in Schematron to repair the XML
– Just in human-readable language
– No structure for alternatives

3. Nico Kutscherauerwww.schematron-quickfix.com
Idea of Schematron QuickFix
• Structure for repair instructions in Schematron (“QuickFix”)
– A human-readable and technical instruction
– More than one QuickFix for each Schematron error
– The user is able to choose:
• Which QuickFix is the right fix
• For each Schematron error
• Requirements
– Extension Language for Schematron
– Extension of the Schematron workflow
– A new Schematron implementation
– A GUI / an editor

4. Nico Kutscherauerwww.schematron-quickfix.com
The language SQF:
• Schematron was extended by an extension language
• Example:
<rule context="title">
<report test="comment()"
sqf:fix="deleteComment resolveComment"
>Comments are forbidden in &lt;title&gt; elements.</report>
<sqf:fix id="deleteComment">
<sqf:description>
<sqf:title>Delete the comment.</sqf:title>
</sqf:description>
<sqf:delete match="comment()"/>
</sqf:fix>
...
</rule>

5. Nico Kutscherauerwww.schematron-quickfix.com
The QuickFix
• The QuickFix contains
– ID, description (title and optional paragraphs)
– One or more activity elements
• 4 kinds of activity elements
– Delete one or more node  sqf:delete
– Replace a node by another  sqf:replace
– Add a node  sqf:add
– Replace substrings of text nodes  sqf:stringReplace
• Optional:
– use-when construction
– One or more User Entry  parameters for the QuickFix
• The value will be set by the user
• At the moment, he choose the QuickFix

6. Nico Kutscherauerwww.schematron-quickfix.com
How does it work?
1. Regular Schematron
validation
2. New compiler Escali
3. Transforms the sqf:fix
elements into xsl:templates
4. User chooses the QuickFix
5. Resolver extracts the
xsl:templates from the SVRL
to build the Manipulator
6. Manipulator repairs the XML
document

7. Nico Kutscherauerwww.schematron-quickfix.com
SQF project:
• Internet
• Home: www.schematron-quickfix.com
• W3C community group: http://www.w3.org/community/quickfix/
• On twitter: http://twitter.com/nkutsche
• Documentation
• Definition of the SQF grammar using XSD
• References of all extensions (including additional Schematron extensions)
• User guide
• Software
• Escali:
• Schematron implementation
• Support for SQF
• Additional Schematron extension
• An implementation based on XProc
• Comming soon: Escali plugin for <oXygen/>