[fdo-users] Resource ID does not refer to a valid feature source

Greg Boone greg.boone at autodesk.com
Mon Nov 22 12:49:47 EST 2010

The PostGIS 3.4 provider has not been tested heavily with MG, and has fallen off the active development list now that the PostgreSQL provider has been released. I know that there were a number of outstanding defects logged against the PostGIS provider that were never resolved. You might want to try the FDO 3.5 release and its PostgreSQL provider to see if using that provider resolves your issues. However, that would mean you would need to move to the version of MG that is compatible with FDO 3.5. 


-----Original Message-----
From: fdo-users-bounces at lists.osgeo.org [mailto:fdo-users-bounces at lists.osgeo.org] On Behalf Of Heddo Klandermans
Sent: Friday, November 19, 2010 3:49 AM
To: fdo-users at lists.osgeo.org
Subject: [fdo-users] Resource ID does not refer to a valid feature source


Using MapGuide Studio 2010 I can make a succesful  connection to my 
database by FDO PostGIS connection (PostGreSQL 8.4 + PostGIS 3.4). Also 
(geometric) tables can be read to create layers.
After performing some changes in the database table structure the Data 
connection was still ok, but MG had problems in getting table-data for 
the layers. I fixed this by a Vacuum Analyse on the database and finally 
a reindex. This worked well and solved the problems.

After another change in my databse now data connection is still ok, but 
when trying to create a layer i get the message:
"Invalid Stream Header Exception" followed by "Resource ID does not 
refer to a valid feature source".

Any attempt to create a new folder and/or data connection in MG using 
FDOPostGIS connecting to that specific database gives the same problem: 
data connection is succesful, when creating a layer it displays these 
messages. Connecting to other databses does not give any problem.

I think this problem is caused by mismatch between Library settings and 
Database. Did anyone experience similar problems and if so what can be 
done to it?


ir. H.D. (Heddo) Klandermans
Senior Consultant

Hawar Information Technology bv
De Wymerts 7, 8701 WT Bolsward, NL
Postbus 42, 8700 AA Bolsward, NL
Tel.: (+31)-(0)515-570 333
E-mail: h.klandermans at HawarIT.com

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