The following bug has been logged online:
Bug reference: 4638
Logged by: Bjoern Weitzig
Email address: weitzig@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)"
