[teiid-issues] [JBoss JIRA] (TEIID-3302) Implement ST_Transform
Tom Arnold (JIRA)
issues at jboss.org
Thu Mar 12 22:38:18 EDT 2015
[ https://issues.jboss.org/browse/TEIID-3302?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13049661#comment-13049661 ]
Tom Arnold commented on TEIID-3302:
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Is there anything still blocking you with this that I could help with?
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I've been pretty busy at work lately and haven't had a chance to do much work on this. I will make time this weekend to wrap it up!
It would save me some time if you could take a quick glance at the GeometryTransformUtilslookupProj4Text() method to see if I'm on the right track. Is there a simpler way to run queries? Any suggestions on caching the result?
https://github.com/Tom9729/teiid/commit/db0a80f5f1e43befaa33d4c4b55b87f15c6d0f3b
> Implement ST_Transform
> ----------------------
>
> Key: TEIID-3302
> URL: https://issues.jboss.org/browse/TEIID-3302
> Project: Teiid
> Issue Type: Feature Request
> Components: Query Engine
> Reporter: Tom Arnold
> Assignee: Steven Hawkins
> Labels: spatial
>
> Implement [ST_Transform|http://postgis.org/docs/ST_Transform.html] system function. This would be used to transform geometry between different coordinate systems. This needs SPATIAL_REF_SYS table and a supporting library.
> There are a couple of options for implementing this:
> * http://trac.osgeo.org/proj4j/ - Port of the C library used by PostGIS. Fewest dependencies and should keep us close to PostGIS in capabilities. There will be a little boilerplate to interface with JTS.
> * http://docs.geotools.org/latest/userguide/library/referencing/index.html - GeoTools referencing module. I think we would need to develop a simple plugin to interface with our SPATIAL_REF_SYS table. GeoTools is active and has good docs, but brings in a lot of dependencies.
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