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Presentation given at deegree Community Space, november 13, 2012, Bonn. More and more do we need to work with rich/complex GML. How can we tame this mess ? The deegree WMS/WFS server is very suitable to store and serve rich GML, but how do we get our data in ? What spatial ETL options do we have ? Basically this is a tutorial on Stetl, pronounce "staddle", with particular focus on deegree integration. NB Stetl used to be called sETL...
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Preparing Your Rich GML Data for deegree
-
the ETL Challenge
Just van den Broeckedeegree Community Space 2012, Bonn
November 13, 2012www.justobjects.nl
About MeIndependent Open Source Geospatial Professional
Trailblazer OSGeo Dutch Local Chapter
Just van den Broeckejust@justobjects.nl www.justobjects.nl
THE DUTCH KADASTER
GETS INSPIRED WITH
deegree day - nov 16, 2010
THE DUTCH KADASTER
GETS INSPIRED WITH
deegree Community Space - nov 13, 2012
50+ DATASETS
WMS/WFS/WCS/ATOM
METADATA
+
NL INSPIRE ACCESS POINT
PDOK – Open Source & Open Standards
ApplicationsOGC/ISO/INSPIRE Web Services
Storage
Conversion
Services
sETLFME?
OSGeo - Bolsena - 2010
BOLSENA2012
ALLES VORBEI ?
BOLSENA2012
BOLSENA2012
Preparing Your Rich GML Data for deegree
-
the ETL Challenge
Just van den Broeckedeegree Community Space 2012, Bonn
November 13, 2012www.justobjects.nl
We have a Problem
The Rich GML Problem
Rich GML = Complex Mess
INSPIREDutch National DSsAFIS-ALKIS-ATKIS
.
.
The Streetname!
Complex Model
Transformations
Millionsof
Objects
10s of Millionsof
<Elements>
MultipleTransformation
Steps
Solution is Spatial ETL
A.K.A.
Thank You for your
Attention!
But what about.......FOSS ? ... Stetl?
FOSS ETL - High Level
FOSS ETL - Lower Level
But Each Powerful by Itself
ogr2ogr
FOSS ETL - DIY ? (No!)
FOSS ETL - How to Combine?
=+ + ?ogr2ogr
FOSS ETL - Add Python to Equation
=+ + ?( )ogr2ogr
=+ +
Stetl
( )ogr2ogr
Stetl=
SimpleStreaming
SpatialSpeedy
ETL
Process Chain
Input Filter Outputgml
Filter
Stetl concepts
Speed: Streaming
Input Filter Outputgml
Stetl concepts
Speed: Going Native
Input Filter Outputgml
ogr2ogr sETLsETL
Native C Libs/Progs
Calls
Stetl concepts
Example: GML to PostGIS
Reader XMLSplitter ogr2ogr
gml
Stetl concepts
Example: INSPIRE Model Transform
ogr2ogr XSLT Writergml
Stetl concepts
Example: deegree Store
ogr2ogr XSLT deegreeWriter
Stetl concepts
Process Chain - How?
Input Filters Output
Stetl concepts
Example: XML to Shape
The Source
Example: XML to Shape
First: XSLT Transform to GML
Example: XML to Shape
XMLInput XSLT ogr2ogr
Example: XML to Shape
The SETL Chain Config File
ProcessChain
Reader
XSLT
ogr2ogr
Example Components
Input Filters Output
Stetl concepts
XMLFile XSLT GMLFile
ogr2gml GMLSplitter gml2ogr
LineStream XMLValidator WFS-T
deegree* FeatureExtractor deegree*
YourInput YourFilter YourOutput
Data Structures
Stetl concepts
✴Components exchange Packet✴Packet contains data✴Data format:
xml_line_stream etree_docetree_feature_arrayxml_doc_as_stringany
deegree Integration
Stetl concepts
✴Input DeegreeBlobstoreInput✴Output DeegreeBlobstoreInput DeegreeFSLoaderOutput WFSTOutput
Cases✴INSPIRE Download Services publish to deegree store (WFS) GML files (for Atom Feed)
✴National GML Datasets GML to PostGIS
Case: Dutch Addresses
Source<GML>
sETL sETLdeegree
WFS
sETL INSPIRE<GML>
AtomFeed
Other
INSPIREAddresses
DutchAddresses+
Buildings
DutchGeocoder
deegreeblobstore
Thank You !
stetl.orgwww.inspire-foss.org
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