[Mono-bugs] [Bug 564833] New: DataAdapter's fill method throws exception in connection with DbProviderFactories

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http://bugzilla.novell.com/show_bug.cgi?id=564833

http://bugzilla.novell.com/show_bug.cgi?id=564833#c0


           Summary: DataAdapter's fill method throws exception in
                    connection with DbProviderFactories
    Classification: Mono
           Product: Mono: Class Libraries
           Version: 2.6.x
          Platform: i586
        OS/Version: openSUSE 11.1
            Status: NEW
          Severity: Major
          Priority: P5 - None
         Component: Sys.Data
        AssignedTo: bnc-blr-team-mono at forge.provo.novell.com
        ReportedBy: dr_doom1983 at yahoo.de
         QAContact: mono-bugs at lists.ximian.com
          Found By: ---
           Blocker: ---


Created an attachment (id=332700)
 --> (http://bugzilla.novell.com/attachment.cgi?id=332700)
Small test project to reproduce

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.0.15)
Gecko/2009102100 SUSE/3.0.15-0.1.2 Firefox/3.0.15

If you use the DbProviderFactory to connect to your database and have a
parameterized command filling a DataSet throws the following exception:

Object reference not set to an instance of an object

Description: HTTP 500. Error processing request.

Stack Trace:

System.NullReferenceException: Object reference not set to an instance of an
object
  at System.Data.Common.DbDataAdapter.Fill (System.Data.DataSet dataSet, Int32
startRecord, Int32 maxRecords, System.String srcTable, IDbCommand command,
CommandBehavior behavior) [0x00000] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Data/System.Data.Common/DbDataAdapter.cs:294 
  at System.Data.Common.DbDataAdapter.Fill (System.Data.DataSet dataSet)
[0x00000] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Data/System.Data.Common/DbDataAdapter.cs:233 
  at DataAdaperFillTest.Default.button1Clicked (System.Object sender,
System.EventArgs args) [0x0007b] in
/home/rupert/Projects/DataAdaperFillTest/DataAdaperFillTest/Default.aspx.cs:38 
  at System.Web.UI.WebControls.Button.OnClick (System.EventArgs e) [0x00027] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Web/System.Web.UI.WebControls/Button.cs:248 
  at System.Web.UI.WebControls.Button.RaisePostBackEvent (System.String
eventArgument) [0x00029] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Web/System.Web.UI.WebControls/Button.cs:278 
  at
System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent
(System.String eventArgument) [0x00000] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Web/System.Web.UI.WebControls/Button.cs:240 
  at System.Web.UI.Page.RaisePostBackEvent (IPostBackEventHandler
sourceControl, System.String eventArgument) [0x00000] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Web/System.Web.UI/Page.cs:1767 
  at System.Web.UI.Page.RaisePostBackEvents () [0x00024] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Web/System.Web.UI/Page.cs:1722 
  at System.Web.UI.Page.ProcessRaiseEvents () [0x0005b] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Web/System.Web.UI/Page.cs:1614 
  at System.Web.UI.Page.InternalProcessRequest () [0x001c5] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Web/System.Web.UI/Page.cs:1535 
  at System.Web.UI.Page.ProcessRequest (System.Web.HttpContext context)
[0x0005b] in
/usr/src/packages/BUILD/mono-2.6/mcs/class/System.Web/System.Web.UI/Page.cs:1353 

Some hacking in the mono source code made it clear that the command object in
line 294 of DbDataAdapter.cs is null but I was not able to find the concrete
error. In version 2.4.2.3 this scenerio still worked. In 2.4.3 and 2.6 preview
I ran into the above error.

Reproducible: Always

Steps to Reproduce:
1.Use DbProviderFactory
2.Use DbDataAdapter
3.Fill a DataSet

Actual Results:  
Reproduction in attached project.

Expected Results:  
Above exception

I used Oracle 10g Enterprise database for the test. So cannot say if other
databases can be used to reproduce the error.

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