Slides from a Geocamp 2013 talk about what Geokettle is and how we used it to migrate data from AutoCAD to an Oracle database. Original HTML slides at http://bit.ly/from-cad-to-db

1. From CAD to DB
FOSS4G to the rescue!
May 25th, , ÓbidosGeocamp 2013
http://bit.ly/from-cad-to-db

2. Jorge Sanz
Working at
Hacking at:
y
Prodevelop
@xurxosanz
gvSIG
OSGeo OSGeo-es
Geoinquietos Valencia
OSM

3. Agenda
The world is complicated
Our use case
First part: AutoCAD
Second part: GeoKettle
Conclusions

4. The world is complicated
On harbours we have draughtsmen,
surveyors, civil engineers
High skills on technical drawings, surveying, etc
Almost 0 (zero) knowledge on GIS or databases
They live inside AutoCAD

6. The world is complicated
...but harbours want to use GIS to manage
their space (€€€)
emergencies (real or simulated)
industrial and environmental sensors
real time moving elements

7. World is complicated
...so they usually implement GIS at some level
and our loved draughtsman have
to load THEIR data into the GIS

8. One use case
We have a space management application
Cartography is maintained in DWG format
We have to load that data
into an Oracle database
The draughtsman has to be able to load it as he
does changes on the cartography

9. Requirements
On demand execution
From AutoCAD (really, those guys live inside it)
Some feedback of the process
Tolerant to messy drawings

10. Our last approach
Use GeoKettle to migrate data
Executed as an AutCAD tool

11. First part: AutoCAD

12. First part: AutoCAD

14. First part: AutoCAD
1. Saves the drawing as a DXF
2. Launches a GeoKettle Job
3. Presents the results

15. Second part: GeoKettle

16. What is Kettle?
Extraction
Transformation
Load

17. Bulding blocks
Step: minimum element, a task
Transformation: chain of steps
Job: sequential execution and coordination of
jobs and trans.

18. Three user interfaces:
Spoon: Graphical User Interface
Kitchen: CLI to execute jobs
Pan: CLI to execute transformations
Carte: web

19. Spoon: tranformation

21. Spoon: job

23. GeoKettle
Techical fork of Kettle
Java
Multiplatform
LGPL
Integrates: GDAL/OGR/...
Uses JTS and GeoTools
Steps for GI: analysis, projections, OGC services,...

24. GeoKettle

26. Our process

27. Delete index

28. Delete index

29. Count geometries

30. Load DXF into Database

31. Get geometry type

32. Polygonize

33. Polygonize

34. Filter, refine and load

35. Count geometries after load

36. Finish the job

37. Finish the job 1/3
Set the correct SRS

38. Finish the job 2/3
Fix invalid geometries

39. Finish the job 3/3
Create a new index

40. Present results

41. Et voilà!

43. Remarks
GeoKettle is a powerful tool to manipulate data
It is a specialized desktop GIS to automate
processes that will be executed many times
It is mainly focused on powers users with
knowledge on SQL, JavaScript, OGR/GDAL,...

44. From CAD to DB
Thanks!!
http://bit.ly/from-cad-to-db

45. Happy Towel Day!!!

46. References
, now Pentaho Data Integration
at Spatialytics
Kettle
GeoKettle

47. Pictures
, ,Draughtsman Genoa accident at The Telegraph
stylish gifs from topito

48. This content is under a
license.
Creative Commons
Attribution-NonCommercial-ShareAlike 3.0
unported