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[Draft] Add appendix about migration #405

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[Draft] Add appendix about migration #405

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1 change: 1 addition & 0 deletions src/guide/xml/guide.xml
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Original file line number Diff line number Diff line change
Expand Up @@ -55,6 +55,7 @@ contained herein.</para>
<xi:include href="ch04.xml"/> <!-- implementation -->
<xi:include href="ch05.xml"/> <!-- building -->
<xi:include href="ver2.xml"/>
<xi:include href="migration.xml"/><!-- Migration from XSLT 1 -> 3 -->
<xi:include href="glossary.xml"/>
<xi:include href="references.xml"/>
<xi:include href="ackno.xml"/>
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37 changes: 37 additions & 0 deletions src/guide/xml/migration.xml
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@@ -0,0 +1,37 @@
<?xml version="1.0" encoding="UTF-8"?>
<appendix xmlns="http://docbook.org/ns/docbook"
xmlns:xlink="http://www.w3.org/1999/xlink"
version="5.0" xml:id="migration">
<info>
<?db filename="ch-preface"?>
<title>Migration from XSLT 1.0 to XSLT 3.0</title>
</info>

<!--
This is the migration chapter for issue #212
Some ideas to cover:
* Benefits of moving to the new stylesheets (that's probably mostly covered in this project already)
* Target groups (probably developers that already wrote customization layers?)
* Requirements:
* Skills needed (certainly some XSLT/XPath 3.0 would be useful)
* Software (perhaps Saxon9-12. Other XSLT 3.0 processors aren't available at the moment, right?)
* System (the necessary dependencies, Docker images, or other requirements etc.)
* Migration considerations
* Tips and recommendations
* Best practices
* Traps or things to avoid (for example, how to migrate extension elements/functions from other XSLT
processors, like exsl:node-set)
* Testing
The xslTNG stylesheets contains test cases which is really great! How can we use this for a migration project?
* Costs
Not so from a financial aspect, but more about:
* Speed (is it slower/faster than the DocBook XSLT 1.0 stylesheets with xsltproc? By what factor? What can we do to speed up things?)
* Time (how much effort is it to move an existing code base? I know, that's hard to answer, but maybe there are some experiences?)
* Complete rewrite? (when it is useful to just throw away the existing code base and start from scratch? Any experience?)
-->

<para>TBD</para>
</appendix>
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