Project Summary
Stetl provides a toolset for Streaming ETL of geospatial data. Stetl uses existing transformation tools like GDAL/OGR and XSLT and is glued through Python. A config file specifies the ETL chain of modules. Stetl is speed-optimized by using native calls like ogr2ogr, libxml and libxslt (via lxml). Stetl is in particularly meant in ETL-cases where either ogr2ogr or XSLT alone is not sufficient. This mostly involves schema transformations as required for INSPIRE and local GML-based complex datasets. Stetl has proven to be able to handle 10's of millions of features/records through a technique dubbed "gml-splitting" (and outputting into a deegree blobstore, which could be dubbed "gml-spitting").
In a Nutshell, Stetl - Streaming ETL...
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has a well established, mature codebase
maintained by a small development team
with stable Y-O-Y commits -
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took an estimated 2 years of effort (COCOMO model)
starting with its first commit in August, 2012
ending with its most recent commit about 1 month ago
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30 Day SummaryJun 6 2026 — Jul 6 2026
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