Changes between Version 129 and Version 130 of DeveloperGuidelines/Tips


Ignore:
Timestamp:
05/30/14 08:36:38 (8 years ago)
Author:
Pat Tressel
Comment:

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  • DeveloperGuidelines/Tips

    v129 v130  
    221221* Especially useful for USB (minimise disk access): http://web.utk.edu/~jplyon/sqlite/SQLite_optimization_FAQ.html
    222222
    223 == XSLT ==
    224 * DeveloperGuidelines#XSLT
     223== XSLT: XML, XSL, XPath ==
     224
     225We use XSLT (Extensible Stylesheet Language Transformations) to convert external structured data, such as
     226CSV files, spreadsheets, GIS data, and CAP messages into internal S3XML format, and from there to create Eden database entries,
     227and also to export Eden data into external data formats.
     228
     229XSL Stylesheets are themselves XML documents that specify a conversion between one data format and another.
     230XPath (XML Path Language) is used to select elements from the source document to act on.
     231
     232The stylesheets for various data formats are found in the directory: [https://github.com/flavour/eden/blob/master/static/formats eden/static/formats]
     233
     234Support for XSLT is provided by [http://lxml.de/ lxml], which is a Python wrapper for libxml2 and libxslt.
     235This currently supports the XML 1.0 standard, not 2.0, and there are functions available in 2.0 that are not in 1.0,
     236so be aware of this when you are consulting XML / XSLT references.
     237
     238=== Online references ===
     239
     240* W3 standards
     241 * [http://www.w3.org/standards/xml/transformation XSLT overview]
     242* [http://msdn.microsoft.com/en-us/library/ms256069%28v=vs.110%29.aspx MSDN XSLT Reference]
     243* [http://www.dpawson.co.uk/xsl/sect1/sect1.html Dave Pawson's tutorials]
     244
     245=== Books ===
     246
     247Mike Kay, XSLT Programmer's Reference, WROX Press
     248
     249=== Tools ===
     250
     251Try out your xsl stylesheets with: [https://github.com/flavour/eden/blob/master/static/scripts/tools/xsltransform.py xsltransform.py]
     252
     253
    225254
    226255== Visualization ==