[saga-rg] AlreadyExists

[Andre Merzky]

There is a single case where we can't remove it (well, I
found that one only at least): opening a file with with the
flags (Create | Excl).  That MUST raise an error, otherwise
the flag would make no sense.

As for mkdir, we tried to stay close to what users know from
command line, and from POSIX/libc, which both return an
error if the dir exists.

As for contexts: I think it makes sense to allow a context
to get added twice, and to silently ignore the second call.

The last usage of AlreadyExists is for adding locations to a
logical file.  It would probably make sense to keep that
similar to adding contexts to a session - its semantically
close.

Cheers, Andre.


Quoting [sbrandt at cct.lsu.edu] (Jun 22 2006):
> Date: Thu, 22 Jun 2006 10:43:25 -0500
> From: sbrandt at cct.lsu.edu
> To: SAGA RG <saga-rg at ggf.org>
> Subject: [saga-rg] AlreadyExists
> 
> I'm new to the Saga list and have started to look over the java code  
> and various docs.
> 
> I'm wondering if the exception AlreadyExists might be eliminated from  
> the SAGA spec, in favor of different behavior -- namely to do nothing  
> in the case where AlreadyExists would normally be thrown. This should  
> be reasonable for mkdir(), adding a context, etc.
> 
> I believe this would be simpler and nicer for users.
> 
> Cheers,
> Steve



-- 
"So much time, so little to do..."  -- Garfield