Hi Wes,
We'd like to introduce native database spatial types and functions in our ISV ERM products. Our initial plans are just to store points and polygons, and do proximity searches and contains searches. Oracle, SQL Server and DB2 all support this, but H2 does only with add-ons that, as far as I can tell, are LGPL licensed. We are now avoiding LGPL licensed jars in our delivered products. We are okay with Apache licenses.
The main reason that add-ons like hatbox are LGPL is that they rely on the JTS Topology Suite for the geometry heavy lifting (eg point in polygon) and JTS is LGPL. JTS took a long time and some very bright geospatial minds to create, so it's difficult to find anyone keen to start again. The one realistic option is OpenMap from http://openmap.bbn.com . OpenMap is distributed under its own open source license (http://openmap.bbn.com/license.html) that bears some resemblance to the apache license.
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