[Os-project-managers] printModel

[Horand Gassmann]

Hi guys,

I have thought some more about the printModel command, and I have put  
together some specs.

1. There will be four different commands:

     printModel
     printRow n
     printObjective n
     printConstraint n

The last three are really just modifications on one theme.

     printRow n

prints row n, which could be a constraint if n>= 0 or an objective if  
n<0. I think it is a bit counterintuitive to have to specify

printRow -2

for the second objective, hence I am thinking of adding the  
possibility to specify

printObjective 1

instead. And once I got there, I figured I might as well add

printConstraint n

for symmetry.

2. They would be available both in interactive mode and at the command  
line, but only for files that reside on the local machine.

3. In interactive mode, the command would, of course, be activated  
immediately. If a .osil file is available (i.e., has been read  
previously), then we print the osil file or parts of it, if none is  
available, we look for MPS, nl or GAMS files, in that order. If no  
file is available at all, an error is generated.

4. In command line mode, the command would be activated just before  
the service method is called. If no service method is given, the  
default is solve, so the printModel command is executed just before  
the solve.

I have not yet thought through what would happen if the optimization  
instance resides on the remote machine. I guess in that case the print  
command needs to be activated from inside the osol file, right?

When you have a chance, can you look this over and see if I am missing  
something obvious?

Cheers

gus

-------------------------------------------------------

Horand I. Gassmann, Professor

School of Business Administration, Dalhousie University
6100 University Avenue
Halifax, Nova Scotia, Canada , B3H 3J5
ph. (902) 494-1844
fax (902) 494-1107

http://myweb.dal.ca/gassmann/