what is more, then i write code with database spatial query for running in any machine, at this moment i can only do it in machines with postgis installed.
-----Original Message-----
From: Jianhui Jin
Sent: 28 September 2004 17:49
To: Derby Discussion
Subject: RE: Spatial extensions for Derby?

it is great, i mentioned this to Geotools Guys, they said they are interested database with spatial.
-----Original Message-----
From: Martin Davis [mailto:mbdavis@VividSolutions.com]
Sent: 28 September 2004 17:16
To: derby-user@db.apache.org
Subject: Spatial extensions for Derby?

I'm wondering if there is any interest in having/developing spatial extensions for Derby?  I can see value in having Derby available as an embedded database for working with large spatial datasets.
I expect that adding spatial to Derby would involve:
- defining spatial types
- implementing a spatial index (probably an R-tree)
- adding spatial query and manipulation functions
As the developer of the JTS Topology Suite API, I would be happy to offer this package as a component of a spatial implementation in Derby.  Feel free to contact me if this is of interest.
Martin Davis, Senior Technical Architect
Vivid Solutions Inc.      www.vividsolutions.com
Suite #1A-2328 Government Street Victoria, B.C. V8T 5G5
Phone: (250) 385 6040 - Local 308 Fax: (250) 385 6046