[mapguide-users] MgSelection::AddFeatures locks FeatureSource

[Benoit Begin]

I was not able to extensively test this, but it seems as if when
MgSelection::AddFeatures is called, whatever FeatureSource was used for the
MgFeatureReader passed to the function will be locked and un-editable from
the various APIs, or from the Studio. This occurs using Mapguide 2.1 Beta 1,
using the OSGeo KingOracle provider.

The error looks like this in the log:

<2009-06-22T15:30:51> 	4400	Autodesk MapGuide Studio v2.1.0.3001	127.0.0.1
Administrator
 Error: Please try your operation later as the resource was busy:
Library://MyFS.FeatureSource
 StackTrace:
  - MgResourceServiceHandler.ProcessOperation() line 80 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\ResourceServiceHandler.cpp
  - MgOpApplyResourcePackage.Execute() line 96 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\OpApplyResourcePackage.cpp
  - MgServerResourceService.ApplyResourcePackage() line 526 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\ServerResourceService.cpp
  - MgLibraryRepositoryManager.ApplyResourcePackage() line 141 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\LibraryRepositoryManager.cpp
  - MgLibraryRepositoryManager.LoadResourcePackage() line 176 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\LibraryRepositoryManager.cpp
  - MgResourcePackageLoader.Start() line 150 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\ResourcePackageLoader.cpp
  - MgResourcePackageLoader.PerformOperation() line 228 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\ResourcePackageLoader.cpp
  - MgResourcePackageLoader.SetResource() line 308 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\ResourcePackageLoader.cpp
  - MgRepositoryManager.SetResource() line 859 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\RepositoryManager.cpp
  - MgRepositoryManager.UpdateResource() line 996 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\RepositoryManager.cpp
  - MgResourceDefinitionManager.UpdateResource
(MgLibraryResourceContents.dbxml)() line 261 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\ResourceDefinitionManager.cpp
  - MgResourceContentManager.UpdateDocument() line 667 file
c:\osgeo\mapguide_21\mgdev\server\src\services\resource\ResourceContentManager.cpp
  - MgFdoConnectionManager.RemoveCachedFdoConnection() line 1049 file
c:\osgeo\mapguide_21\mgdev\server\src\common\manager\FdoConnectionManager.cpp

I managed to determine the source of the error by fiddling around with
Query.php in Fusion. As soon as you remove the $selection->AddFeatures line,
the FeatureSource won't get locked. The error in itself isn't a show
stopper, however, it does make me slightly worried as I don't know what else
it could break?

I've also tried to remove OSGeo.KingOracle from the
DataConnectionPoolExcludedProviders, but it didn't really changed anything.

At this point I'm not sure wether this is a Mapguide, FDO or a Fusion issue.
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