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<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Yes</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>I’m not a postgis expert, but I
think in your case it should be </span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'>ResultSet rs =
s.executeQuery("select (AsBinary(center(geometry)))) as mycenter from
land");</span></font></p>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'> </span></font></p>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'>You have to convert
the geometry in the binary format</span></font></p>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'> </span></font></p>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'>You can use AsText
too and use new PGgeometry(rs.getString(1)) or something like that I think</span></font></p>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'> </span></font></p>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'>I’m using
postgis_1_0_0.jar</span></font></p>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'> </span></font></p>
<div>
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face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabindex=-1>
</span></font></div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Fatemeh
Abbasinejad [mailto:fabbasinejad@yahoo.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> January 30, 2006 3:19 PM<br>
<b><span style='font-weight:bold'>To:</span></b> PostGIS Users Discussion<br>
<b><span style='font-weight:bold'>Subject:</span></b> RE: [postgis-users] JAVA
and post GIS</span></font></p>
</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>Hi</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> I tried what you did but the program wouln't even compile. I have
a table named "land" which has an attribute"geometry" of
type "circle". I want to retrieve the center of the circle which is
of type "point" as defined by postGIS.Here is my Program</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'>import java.sql.*;<br>
import org.postgis.*;</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'>public class
JavaGIS3 { <br>
public static void main(String[] args) <br>
{ <br>
java.sql.Connection conn; <br>
try <br>
{ <br>
Class.forName("org.postgresql.Driver"); <br>
String url = "jdbc:postgresql://localhost:5432/dcmms";
<br>
conn = DriverManager.getConnection(url,
"postgres", "abcde"); <br>
Statement s = conn.createStatement(); <br>
ResultSet rs = s.executeQuery("select
(center(geometry))as mycenter from land"); <br>
ResultSetMetaData rsmd = rs.getMetaData();<br>
for(int i=0;rs.next();i++){<br>
Geometry geometry = new
BinaryParser().parse(rs.getBytes(1));<br>
if(geometry.getType()==geometry.POINT){<br>
System.out.println("Finally retrieved geometry object!")<br>
}<br>
}<br>
s.close(); <br>
conn.close(); <br>
} <br>
catch( Exception e ) <br>
{ <br>
e.printStackTrace(); <br>
}<br>
}<br>
}</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 face=Arial><span style='font-size:10.0pt;
font-family:Arial'>I did what you had said in your email but it would give an
error:</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=red face="Times New Roman"><span
style='font-size:10.0pt;color:red'>BinaryParser cannot be resolved to a type</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>What should I do? Did you compile your
program?</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 color="#0000bf" face=Courier><span
style='font-size:12.0pt;font-family:Courier;color:#0000BF'><br>
</span></font><b><i><span style='font-weight:bold;font-style:italic'>"Gilbert,
Antoine" <AGilbert@korem.com></span></i></b> wrote:</p>
</div>
<blockquote style='border:none;border-left:solid #1010FF 1.5pt;padding:0cm 0cm 0cm 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Hi</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Here is my example using postgis_1_0_0.jar</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>Connection connection =
TestUtils.getTestConnection();</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
Statement stmt = connection.createStatement();</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
ResultSet rs = stmt.executeQuery("select AsBinary(geom) as geom from
\"rue_test_polyline\"");</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
ResultSetMetaData rsmd = rs.getMetaData();</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
for(int i=0;rs.next();i++){</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
Geometry geometry = new BinaryParser().parse(rs.getBytes(1));</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
if(geometry.getType()==geometry.MULTILINESTRING){</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
MultiLineString multiline = ((MultiLineString)geometry);</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
System.out.println(multiline.toString());</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
System.out.println("ligne "+i+" contient
"+multiline.numLines()+" segment(s)");</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
for(int j=0;j<multiline.numLines();j++)</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
System.out.println(" segment
"+j+":"+multiline.getLine(j).numPoints()+" points");</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
}</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
}</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
stmt.close();</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=2 color=navy face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:navy'>
connection.close();</span></font></p>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=2 width="100%" align=center tabIndex=-1>
</span></font></div>
<div>
<p class=MsoNormal><b><font size=2 face=Tahoma><span style='font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font size=2
face=Tahoma><span style='font-size:10.0pt;font-family:Tahoma'> Fatemeh
Abbasinejad [mailto:fabbasinejad@yahoo.com] <br>
<b><span style='font-weight:bold'>Sent:</span></b> January 30, 2006 3:43 AM<br>
<b><span style='font-weight:bold'>To:</span></b>
postgis-users@postgis.refractions.net<br>
<b><span style='font-weight:bold'>Subject:</span></b> [postgis-users] JAVA and
post GIS</span></font></p>
</div>
</div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div id=RTEContent>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>I am new to PostGIS. Does anyone know how we can retrieve our defined
data types <br>
(like point,circle,...) from a ResultSet in java. I used getObject but it
didn't work. </span></font></p>
</div>
</div>
<div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'>-fatemeh</span></font></p>
</div>
</div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
face="Times New Roman"><span style='font-size:12.0pt'>
<hr size=1 width="100%" align=center>
</span></font></div>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
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</div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
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postgis-users mailing list<br>
postgis-users@postgis.refractions.net<br>
http://postgis.refractions.net/mailman/listinfo/postgis-users</span></font></p>
</blockquote>
<div>
<p class=MsoNormal><font size=3 face="Times New Roman"><span style='font-size:
12.0pt'> </span></font></p>
</div>
<div class=MsoNormal align=center style='text-align:center'><font size=3
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<hr size=1 width="100%" align=center>
</span></font></div>
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