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> From: Eric Davies <[EMAIL PROTECTED]> > Barrodale Computing Services are rather excited by the open sourcing of > Cloudscape (Derby). > Specifically, we are interested in exploiting/augmenting Cloudscape's > spatial capabilities. We have implemented spatial datatypes and indexes for > the Informix and postgreSQL in the past. But if we understand correctly, > Cloudscape does not currently support spatial types nor indexing strategies. > Certainly nothing on the features page suggests this. > > That being said, we heard rumours of a GiST "experiment" underway in > Cloudscape. If the GiST code could be made available, this would greatly > facilitate the development, ultimately, of spatial indexes, including but > not necessarily limited to R-tree indexes. With a proper spatial index, > Cloudscape could be applied to a much more interesting set of problems, > particularly in areas related to GIS. Yes, some prototype GiST code exists for Derby/Cloudscape. The access layer of the Derby store does support pluggable indexing, at the code level. The GiST code is at this level, I think it was only ever used at that level, with some unit tests. That is it was not exposed up to the SQL layer in any way. The code may prove to be useful or it may just be an example for starting afresh. I will work on getting it out of IBM and onto the Derby site. I do think standard spatial data support for Derby is an excellent goal, following the SQL/MM and/or OGC standards. Dan. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.5 (MingW32) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFBZuxrIv0S4qsbfuQRAk60AKCLJJrHZGB7VYc2EZwYMb31OjL+HQCgjdhx S5pQtvcAd/Bs+Z6EOh3OGRY= =7m1a -----END PGP SIGNATURE-----
