[Os-project-managers] (Fwd) Warning: could not send message for past 4 hours

[Kipp Martin]

Hi Gus:

Hopefully the disk space problem was a "random glitch." I copied the 
project managers list so maybe it will get there.


I guess the bottom line is that we are hosed.

It seems to me that


1.
  <general>
  	<license></license>
  </general>

2.

  <general>
  	<license/>
  </general>

3.

<general/>

should all yield identical objects. In all three cases a general object 
should be instantiated  and in all three cases the class member 
"license" is a string equal to "". I have no problem with that. Of 
course the question is what should the XML be. That is going to be 
ambiguous and the user might well input in a file

  <general>
  	<license></license>
  </general>

and get back

<general/>

Now of course

<osol...></osol>

is totally different from a class/object standpoint. If we have

  <osol...></osol>

then the  "general" member of the class is equal to NULL. In cases 1-3 
"general" is not NULL.

Do you agree that 1-3 are identical objects?  Is the question to come up 
with a standard as to what we write?

Cheers






> 
> it is not clear to me where this message bounced, but somewhere there is a 
> disk space problem... 
> 
> Cheers
> 
> gus
> 
> ------- Forwarded message follows -------
> Date sent:	Thu, 3 Feb 2011 14:44:11 -0400 (AST)
> From:	Mail Delivery Subsystem <MAILER-DAEMON at kil-sm-1.ucis.dal.ca>
> To:	<Horand.Gassmann at dal.ca>
> Subject:	Warning: could not send message for past 4 hours
> 
>     **********************************************
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>     **  YOU DO NOT NEED TO RESEND YOUR MESSAGE  **
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> 
> The original message was received at Thu, 3 Feb 2011 10:43:03 -0400 (AST)
> from GGassmann-2.SBA.Dal.Ca [129.173.124.191]
> 
>    ----- Transcript of session follows -----
> ... while talking to list.coin-or.org.:
>>>> MAIL From:<Horand.Gassmann at dal.ca> SIZE=1802
> <<< 452 4.4.5 Insufficient disk space; try again later
> <Os-project-managers at list.coin-or.org>... Deferred: 452 4.4.5 Insufficient disk space; try again later
> Warning: message still undelivered after 4 hours
> Will keep trying until message is 5 days old
> 
> Hi guys,
> 
> this is a follow-on query to the issue of numberOf...="0" that I asked 
> previously.
> 
> In OSoL the <general> element has a number of string-valued children (such
> as serviceURI, serviceName, instanceName, etc.) These elements have no 
> default value and no length restriction, so it would seem that, e.g.,
> 
> <general>
> 	<license></license>
> </general> 
> 
> is a legal OSoL element --- or even
> 
> <general>
> 	<license/>
> </general> 
> 
> My problem then is to distinguish these situations from
> 
> <general/>
> 
> or even 
> 
> <osol...></osol>
> 
> I know that we said earlier with the numberOf... that we will put the
> child 
> element and treat
> 
> <variables>
> 	<initialVariableValues numberOfVar="0"/>
> </variables>
> 
> as different from
> 
> <variables>
> </variables>
>  
> even though they are functionally equivalent, but in the string-valued
> cases 
> this turns out not to be so easy. I don't new the string, and hence I
> cannot 
> test whether the parser allocated it or not, I can't go by the length (?)
> --- it 
> seems that
> 
> <password></password>
> 
> should be legal, for instance --- and hence I do not know how to establish
> equality of two <generalOption> objects. Any ideas?
> 
> Thanks
> 
> gus
> 
> ------- End of forwarded message -------


-- 
Kipp Martin
Professor of Operations Research
and Computing Technology
Booth School of Business
University of Chicago
5807 South Woodlawn Avenue
Chicago, IL 60637
773-702-7456
kmartin at chicagobooth.edu
http://www.chicagobooth.edu/faculty/bio.aspx?person_id=12825325568
http://projects.coin-or.org/OS