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<TITLE> [Mono-bugs] [Bug 75137][Nor] New - DataSet.Merge() behaviour
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different from MS .NET
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<H1>[Mono-bugs] [Bug 75137][Nor] New - DataSet.Merge() behaviour
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different from MS .NET</H1>
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<B>bugzilla-daemon at bugzilla.ximian.com</B>
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<A HREF="mailto:mono-bugs%40lists.ximian.com?Subject=%5BMono-bugs%5D%20%5BBug%2075137%5D%5BNor%5D%20New%20-%20DataSet.Merge%28%29%20behaviour%0A%09different%20from%20MS%20.NET&In-Reply-To=bug-75137%40chernobyl.ximian.com"
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TITLE="[Mono-bugs] [Bug 75137][Nor] New - DataSet.Merge() behaviour
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different from MS .NET">bugzilla-daemon at bugzilla.ximian.com
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</A><BR>
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<I>Fri Jun 3 07:52:45 EDT 2005</I>
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<PRE>Please do not reply to this email- if you want to comment on the bug, go to the
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URL shown below and enter your comments there.
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Changed by <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">george.barbarosie at gmail.com.</A>
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<A HREF="http://bugzilla.ximian.com/show_bug.cgi?id=75137">http://bugzilla.ximian.com/show_bug.cgi?id=75137</A>
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--- shadow/75137 2005-06-03 07:52:45.000000000 -0400
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+++ shadow/75137.tmp.22781 2005-06-03 07:52:45.000000000 -0400
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@@ -0,0 +1,43 @@
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+Bug#: 75137
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+Product: Mono: Class Libraries
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+Version: 1.1
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+OS:
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+OS Details:
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+Status: NEW
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+Resolution:
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+Severity:
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+Priority: Normal
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+Component: Sys.Data
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+AssignedTo: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at ximian.com</A>
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+ReportedBy: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">george.barbarosie at gmail.com</A>
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+QAContact: <A HREF="http://lists.ximian.com/mailman/listinfo/mono-bugs">mono-bugs at ximian.com</A>
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+TargetMilestone: ---
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+URL:
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+Cc:
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+Summary: DataSet.Merge() behaviour different from MS .NET
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+
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+Merge() on MS .NET differs from Mono Class Library SVN Trunk implemntation
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+in a number of ways:
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+ * When destination row has DataRowState.Unchanged and source row has
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+DataRowState.Modified, destination Original index gets overwritten by Merge
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+(actually CopyValuesToRow...), in effect destination DataRowState remains
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+unaffected;
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+ * When destination row has DataRowState.Original or DataRowState.Modified
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+and source row has DataRowState.Added, destination Original index gets
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+deleted which is not ok; destination DataRowState gets set to Added.
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+ * When destination row has DataRowState.Unchanged and source row has
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+DataRowState.Deleted, the Original index gets Disposed alongside the
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+Current record, because the code does not check if Original and Current
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+point to the same index.
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+
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+Testcase attachment will follow (zipfile)
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+ - test.cs - sample application to hilight all 3 of the above;
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+ - expected_results_merge.txt - output of test.cs on MS .NET;
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+ - actual_results_merge.txt - output of test.cs on mono with latest svn
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+class libraries;
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+ - actual_results_merge_patched.txt - output of test.cs on mono with latest
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+svn clas libraries after proposed patch has been applied;
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+
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+Testcase will not run at all without patch from bug#75123 applied first.
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+
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+Proposed patch will follow too.
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</PRE>
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