Re: [Draconet-users] Problem with Vault - moving a file in repository

[Benjamin J. <be...@jo...>]

No problem, thanks Paul for working on this - its a really neat tool, 
I'm looking forward to figuring out how it all works.

--ben

Paul Welter wrote:

>Ben,
>
>Thanks for taking the time to fix this.  If you send me the patch or the
>file itself, I will commit the fix.
>
>Thanks
>Paul
>
>
>-----Original Message-----
>From: dra...@li...
>[mailto:dra...@li...] On Behalf Of
>Benjamin Joldersma
>Sent: Monday, February 07, 2005 11:56 AM
>To: dra...@li...
>Subject: Re: [Draconet-users] Problem with Vault - moving a file in
>repository
>
>Hello,
>
>I've sorted out this problem, at least for my team.  The issue lies in 
>that in the Modification.CompareTo implementation, nulls are not checked
>
>for when doing the comparisons.  The Vault does not really consider a 
>move an atomic operation.  It notes that an operation occurs to remove 
>the file from the source folder, and a separate operation to insert it 
>into the new folder.  I don't know if this is how other source control 
>systems work, but this is apparently what the vault does.  Since the 
>dateTime and the user fields are identical, the CompareTo method 
>attempts to sort by comment.  Since Vault does not allow comments for 
>move operations, this throws an exception, and the build pukes.
>
>Personally, I don't see a great purpose in sorting by comment, or really
>
>by anything other than DateTime - the odds that multiple users will 
>check in code at the exact same moment are very slim.  SmallDateTime's 
>in SqlServer are only accurate down to the minute, and the Vault returns
>
>DateTimes down to the second, so they must be extremely accurate.  
>Anyways, and regardless, I fixed the file, but I don't know how to make 
>the patch file, so if anyone is interested in me submitting a fix - 
>please let me know what the process is.
>
>--ben joldersma
>
>Benjamin Joldersma wrote:
>
>  
>
>>Hello all,
>>
>>I've seen some emails about this - it seems that the problem that 
>>triggers the GetModifications error:
>>
>>System.InvalidOperationException: Specified IComparer threw an
>>exception. ---> System.NullReferenceException: Object reference not
>>    
>>
>set
>  
>
>>to an instance of an object.
>>   at Draco.Core.Scc.Modification.CompareTo(Object obj)
>>   at System.Collections.Comparer.Compare(Object a, Object b)
>>   at System.SorterObjectArray.QuickSort(Int32 left, Int32 right)
>>   --- End of inner exception stack trace ---
>>   at System.SorterObjectArray.QuickSort(Int32 left, Int32 right)
>>   at System.Array.Sort(Array keys, Array items, Int32 index, Int32
>>length, IComparer comparer)
>>   at System.Array.Sort(Array array)
>>   at Draco.Core.Runtime.BuildRunner.GetModifications(DateTime
>>earliestModificationTime)
>>   at Draco.Core.Runtime.BuildRunner.CheckForChanges(BuildType
>>buildType, Boolean& changesSinceLastBuild)
>>   at Draco.Core.Runtime.BuildRunner.Start(BuildType buildType)
>>
>>happens when we move a file into a different directory.  This makes 
>>sense.  Deleting the build.info and log files fixes it, but I don't 
>>want to have to do this every time we move our files around.  Any 
>>suggestions?
>>
>>--ben joldersma
>>
>>
>>
>>
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