[postgis-devel] FWD: BUG #4638: Bug with Geometry in Array

[Tom Lane]

Can anyone here reproduce the behavior complained of below?
(I haven't got postgis installed ATM, so not convenient to try it
myself)

			regards, tom lane

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Date:    Tue, 3 Feb 2009 12:49:22 GMT
From:    "Bjoern Weitzig" <weitzig at supportgis.de>
To:      pgsql-bugs at postgresql.org
Subject: [BUGS] BUG #4638: Bug with Geometry in Array


The following bug has been logged online:

Bug reference:      4638
Logged by:          Bjoern Weitzig
Email address:      weitzig at supportgis.de
PostgreSQL version: 8.3.5
Operating system:   Windows
Description:        Bug with Geometry in Array
Details: 

System: PostgreSQL 8.3.5, compiled by Visual C++ build 1400
(Windows-Installer), PostGIS 1.3.5, GEOS 3.0.3-CAPI-1.4.2 on Windows

I use arrays like "select array(select n from a)". This works well except of
the case with geometry as datatype. 

In case of geometry, the JDBC ResultSet.getArray(1).getResultSet() only
lists the first element.

Testcase:

create table a(n VARCHAR); 
SELECT AddGeometryColumn( 'a', 'feature', -1, 'GEOMETRY', 3 );
INSERT INTO a(n, feature) VALUES (1,GeomFromText('Point(1 1 0)',-1));
INSERT INTO a(n, feature) VALUES (2,GeomFromText('Point(2 2 0)',-1));

select array(select n from a);
  =>  "{1,2}"  (ok)
select array(select feature from a);
 => 

"{0101000080000000000000F03F000000000000F03F0000000000000000:010100008000000
0000000004000000000000000400000000000000000}"
I wonder why there is a ":" instead of an ",".

JDBC:
		ResultSet rset = stmt.executeQuery("select array(select feature from
a)");
	        if (rset.next()) {
	        	Array array = rset.getArray(1);
	        	ResultSet rs2 = array.getResultSet();
	        	int n=0;
	        	while (rs2.next()) {
	        		Object o = rs2.getObject(2);
	        		n++;
	        		System.out.println(n+": "+o);
	        	}
	        	rs2.close();
	        }
This lists only the first point "1: POINT(1 1 0)", instead of expected "1:
POINT(1 1 0) \n 2: POINT(2 2 0)"

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