[postgis] Re: The Next Level(polygon clipping)

[mbdavis]

As the JTS developer, I'll stick my 2 cents in here...  

Paul's right, currently there is no connection between JTS and PostGIS.
That connection is obviously desirable, but how to achieve it is currently a
research issue (mostly conducted over beers in the pub, so far...).  It
seems unlikely that we'll be able to use the Java version of JTS on the
server side.  However, it may be that using JTS on the client-side is
sufficient for some applications.

I hope to make a version of JTS available on the Web in the next couple of
months.

By the way, the Java2D Area *does* support holes, via the use of the
subtract method.



-----Original Message-----
From: Hisaji ONO [mailto:ono96 at fa2.so-net.ne.jp]
Sent: Tuesday, July 31, 2001 11:12 PM
To: postgis at yahoogroups.com
Subject: Re: [postgis] Re: The Next Level(polygon clipping)


Hi.

>
> Perhaps I misunderstand, but:
> - Firstly, we do not have access to a Java Virtual Machine at the
> backend (server-side Java is still a wish-list item for the PostgreSQL
> team), so therefor we do not have access to the Java2D API.
> - Secondly, if the routines cannot handle holes they aren't much use for
> a GIS-oriented system. Certainly they would not meet the requirements of
> OGC.
>

 Sorry, I didn't understand about PostGIS very well. According to GDBC's
document, http://home.gdbc.gov.bc.ca/RFP/RFP1070-20-604.pdf, which is only
info of JST for me, JST is based on Java. So PostGIS supports Java-Run time
and will connect to JST via JNI(Java Native Interface.)



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