[mapguide-trac] #740: GETSPATIALCONTEXTS and GDAL Always Returns Default Extents

[MapGuide Open Source]

#740: GETSPATIALCONTEXTS and GDAL Always Returns Default Extents
-------------------------------+--------------------------------------------
   Reporter:  crispinatime     |       Owner:       
       Type:  defect           |      Status:  new  
   Priority:  medium           |   Milestone:  2.1  
  Component:  Feature Service  |     Version:  2.0.2
   Severity:  major            |    Keywords:       
External_id:                   |  
-------------------------------+--------------------------------------------
 Hi,

 I have been trying to debug Maestro wondering why when a raster config
 resource file is built it always contains bogus extents (-10000000 to
 10000000).

 I finally traced through to 'GetSpatialContextInfo(...)' which has created
 a temporary session resource to query via the MapGuide API - as far as I
 can see on my layer set-ups it is GETSPATIALCONTEXTS that is at fault.

 I have tested the file with GDALinfo.exe to confirm the extents are
 returned OK by the GDAL14.dll.

 To recreate (for example) add a raster file to a GDAL composite feature
 source in Maestro and put a braek point in HttpServerConnection.cs at line
 922 to step into the call and see the extents generated.

 Or simply edit the FeatureSource in the second URL below:

  C


 {{{
 http://localhost/mapguide/mapagent/mapagent.fcgi?OPERATION=GETSPATIALCONTEXTS
  &VERSION=1.0.0
  &SESSION=5360ba88-0000-1000-8000-001422f493b1_en_7F0000010AFC0AFB0AFA
  &FORMAT=text%2fxml
  &RESOURCEID=Session%3a5360ba88-0000-1000-8000-
 001422f493b1_en_7F0000010AFC0AFB0AFA%2f%2fccbeeed0-d467-41c9-a439-
 8d7fc84593bc.FeatureSource
  &ACTIVEONLY=1
  &LOCALE=en
 }}}


 Can simplify for any GDAL resource you have with the following

 {{{
 http://localhost/mapguide/mapagent/mapagent.fcgi?OPERATION=GETSPATIALCONTEXTS
  &VERSION=1.0.0
  &FORMAT=text%2fxml
  &RESOURCEID=Library://Test/Data/NS66.FeatureSource
  &ACTIVEONLY=1
  &LOCALE=en
 }}}


 Always returns extents like below (non-GDAL feature sources return good
 extents)

 {{{
 ...
 <Extent>
 <LowerLeftCoordinate>
 <X>-10000000</X>
 <Y>-10000000</Y>
 </LowerLeftCoordinate>
 <UpperRightCoordinate>
 <X>10000000</X>
 <Y>10000000</Y>
 </UpperRightCoordinate>
 </Extent>
 ...
 }}}

-- 
Ticket URL: <http://trac.osgeo.org/mapguide/ticket/740>
MapGuide Open Source <http://mapguide.osgeo.org/>
MapGuide Open Source Internals