Dears,
We are working on a new GDBMS version named GDMS (look at
http://geosysin.iict.ch/irstv-trac/wiki/GDBMS/Project). This development is
supported by IRSTV institute. We are 3 only on GDMS.
Currently, GDMS is used by OrbisGIS a new GIS approach based on geotools (
http://geosysin.iict.ch/irstv-trac/wiki/OrbisGIS/Videos).
Few months ago, I proposed a plan to improve the memory limits in OpenJUMP
using GDMS but without any sucess ;-).
GDMS contains a SQL engine and the data is never load in memory. It will be
a great improvement if OJ uses it.
GDMS is very easy to use. Look the example below :
//Open a shape file
File src1 = new File( "../hedgerow.shp");
DataSourceFactory dsf = new DataSourceFactory();
DataSource ds = null ; // We use a datasource. Because it can be
alphanumeric or spatial.
SpatialDataSourceDecorator sds = null ;
ds = dsf .getDataSource(src1);
sds = new SpatialDataSourceDecorator(ds); // To obtain a spatial object
//To query the data
dsf.executeSQL("select Buffer(the_geom, 20) from "+ ds.getName) // It
returns a new datasource
Easy no ?
Currently we have :
- H2 spatial driver,
- DBF,
-CSV,
- shapefile,
- cir (3D format)
Feel free if OJ community is interested.
R1.
2007/8/19, Stefan Steiniger <[EMAIL PROTECTED]>:
>
> Hei Peppe,
>
> i somehow try to follow the GDBMS development by Erwans Teams as it
> seems very useful together with H2 spatial to obtain memory-idenpence
> from file sizes for OJ/JUMP. The problem is simply, that a) we do not
> know how reliable t works currenly, b) that i am not familar with
> databases and c) we lack resources for an adaptation.
>
> but maybe...
>
> stefan
>
> Giuseppe Aruta schrieb:
> > Hi all,
> > does somebody explore the possibility to add GDBMS
> > (http://gdbms.sourceforge.net/) drivers to OJ?
> > GDBMS and related GDBMS gvSIG plugins add support for
> > many file formats: shapefiles, dgn, dwg (OpenDWG
> > spec.), etc
> > Some JAVA software like Orbiscad and GvSIG use these
> > drivers.
> > I am interested abouit DWG and I did some test:
> > Orbiscad reads DWG but it is very slow and has no
> > support for text and layer colours
> > GvSIG opens DWG quite well, it is fast and reads text
> > and colours.
> >
> > Regards
> >
> > Peppe
> >
> >
> >
> > ___________________________________
> > L'email della prossima generazione? Puoi averla con la nuova Yahoo!
> Mail: http://it.docs.yahoo.com/nowyoucan.html
> > _______________________________________________
> > jump-users mailing list
> > [email protected]
> > http://lists.refractions.net/mailman/listinfo/jump-users
> >
> >
> _______________________________________________
> jump-users mailing list
> [email protected]
> http://lists.refractions.net/mailman/listinfo/jump-users
>
--
Ingénieur de recherche
Docteur en géographie,
spécialité géomatique
École Centrale de Nantes
Institut de recherche en sciences et techniques de la ville
http://www.irstv.cnrs.fr/
http://geosysin.iict.ch/irstv-trac/wiki
http://r1.bocher.free.fr
http://www.projet-sigle.org
_______________________________________________
jump-users mailing list
[email protected]
http://lists.refractions.net/mailman/listinfo/jump-users
