Description Gunnar Wagenknecht 2005-11-13 11:59:59 EST

If I rename a file to a file that already exists the existing file is not
deleted before the rename. Instead, the content is replaced and the other file
is deleted.

I think this behavior is not what someone expects when doing this. Especially if
the files are versioned using an SCM I would expect to keep the history of the
original file and drop the one from the overwritten one. 

I would expect the following:
- delete the existing file
- rename the file

See the following thread from the newsgroup:

John Arthorne wrote:
> You receive this delta because this is exactly what the UI does in the 
> case of an overwriting rename.  The UI code of the rename action calls 
> setContents on the b.txt, and then deletes a.txt. Hence this is the 
> delta you receive.  In short, this means it is impossible to detect the 
> difference between a plain modification of b.txt, and the case were the 
> contents of b.txt are set to be the contents of a.txt.  Here is the 
> snippet of code from RenameResourceAction:
> 
> if (newResource != null) {
>   if (checkOverwrite(getShell(), newResource)) {
>     if (resource.getType() == IResource.FILE
>       && newResource.getType() == IResource.FILE) {
>       IFile file = (IFile) resource;
>       IFile newFile = (IFile) newResource;
>       if (validateEdit(file, newFile, getShell())) {
>         IProgressMonitor subMonitor = new SubProgressMonitor(
>           monitor, 50);
>         newFile.setContents(file.getContents(),
>          IResource.KEEP_HISTORY, subMonitor);
>         file.delete(IResource.KEEP_HISTORY, subMonitor);
> -- 
> 
> 
> Karen Harris wrote:
> 
>>
>> I'm having a problem detecting a particular change event. Say I have 
>> two files (let's call them a.txt and b.txt) in the same folder in my 
>> workspace. I then rename a.txt to b.txt. Eclipse pops up a dialog 
>> asking me if I want to overwrite the file and I reply yes. The 
>> resource change events I receive are a root content change, a project 
>> content change, some marker change events, and a file content change 
>> event. What I need is to detect a change that tells me both the prior 
>> name of the file and the new name of the file, which I am not 
>> receiving. Am I missing something? I don't have to use resource change 
>> events if there's some other way to detect that a file has been 
>> renamed to an existing filename.
>>
>> (Note that most other situations are working fine for me. If I rename 
>> a file to a unique name, I get the expected add/moved-from and 
>> delete/moved-to events. Also, if I copy a file a.txt to another folder 
>> where there's already a file called a.txt, I get the overwrite 
>> confirmation popup, but then I also get add/moved-to and 
>> removed/moved-from events, so I have all the info I need.)
>> Any help/insight into what's going on here would be deeply 
>> appreciated! BTW, I'm using Eclipse 3.1.0.
>>
>> Thanks!
>> Karen
>>