[postgis-users] populatong a postgis via Javaappl.

[Malm Paul]

Regina, I just love you!
Thanks,
Paul

-----Original Message-----
From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Obe,
Regina
Sent: den 14 mars 2007 15:50
To: PostGIS Users Discussion
Subject: RE: [postgis-users] populatong a postgis via Javaappl.

Hi Paul,
 
Unfortunately I haven't programmed in Java in years.  So hopefully the
little bit I do know can help.
 
1) The postgis driver is included in the postgis package which the
latest source you can find here
http://postgis.refractions.net/download/  (postgis-1.2.1.tar.gz)
 
2) Here is one thread that shows how to do it using the driver
a)
http://postgis.refractions.net/pipermail/postgis-users/2005-June/008542.
html - if you want to use the driver
 
I think the driver is mostly used for reading geometries rather than
setting them or for setting complex geometries.

b) Using a more elegant variant of what I mentioned.  This one doesn't
use the postgis driver but just a plain postgresql driver
 
http://postgis.refractions.net/pipermail/postgis-users/2006-October/0134
84.html
 
 
So basically your logic in this case would look like
 
PreparedStatement stmt = con.prepareStatement("insert into ais (mmsi,
the_geom) " + "values(?,  GeometryFromText(?,-1))");
stmt.setString(1, "abc");
stmt.setString(2, "POINT(" + lat + " " + lon + ")");
System.out.println(stmt);
stmt.executeUpdate();
 
Hope that helps,
Regina
 

________________________________

From: postgis-users-bounces at postgis.refractions.net
[mailto:postgis-users-bounces at postgis.refractions.net] On Behalf Of Malm
Paul
Sent: Wednesday, March 14, 2007 9:48 AM
To: PostGIS Users Discussion
Subject: [postgis-users] populatong a postgis via Javaappl.



I would like to insert a point in a postgis database.

BEGIN;
INSERT INTO "public"."ais" ("mmsi", the_geom) 
VALUES ('123', ,GeometryFromText('POINT(-73.910977172366
40.729270630126)',-1));
END;

This is what I have tried in java.

static private Connection con = null;
double lat 63.049813568477724;
double lon 20.26472335111486;

Class.forName(org.postgresql.Driver);
con = DriverManager.getConnection("jdbc:postgresql:postgis", "username",
"pw");
PreparedStatement stmt = con.prepareStatement("insert into ais (mmsi,
the_geom) " + "values(?,  ?)");
stmt.setString(1, "abc");
stmt.setString(2, "GeometryFromText('POINT(" + lat + " " + lon +
")',-1)");
System.out.println(stmt);
stmt.executeUpdate();

This is what System.out.println prints:
insert into ais (mmsi,  the_geom) values(abc,
GeometryFromText('POINT(63.049813568477724 20.26472335111486)',-1))

This is the Error message
org.postgresql.util.PSQLException: ERROR: column "the_geom" is of type
geometry but expression is of type character varying

 

Could someone please tell me where I can read about how to do this, or
if someone could send me a little example? I have not found any
documentation that shows this (at least as far as I understand I'm new
at both Java and SQL).

This must be a basic thing, but I don't get it...

Thanks..

 

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