Verbosity of the messages for CPLEX

[Alpar Juttner]

The glpk version of the lp interface has a function

void messageLevel(int m);

This functionality would also be useful for CPLEX or all lp solvers.

This ticket is a copy of report #29 of the old bug tracking system. It refers to svn trunk -r2534. The original report was posted by Janos Tapolcai.

[Balazs Dezso]

Log verbosity settings in various solvers

[Balazs Dezso]

I have uploaded a bundle for message handling in various solvers.

[Alpar Juttner]

Replying to deba:

I have uploaded a bundle for message handling in various solvers.

I have a short look at the attached bundle file. It looks good. My problem is that If I want to see the messages with GLPK, I should write

lp.messageLevel(GlpkBase::MESSAGE_FULL_OUTPUT);

while with Clp it reads

lp.messageLevel(CbcLp::MESSAGE_VERBOSE_OUTPUT);

and with CBC it reads

lp.messageLevel(CbcMip::MESSAGE_FULL_OUTPUT);

and with CPLEX it reads

lp.messageLevel(CplexBase::MESSAGE_NORMAL_OUTPUT);

It makes it unnecessary hard to switch between the solvers. I suggest declaring a unified set of message levels and move this enum to the common base-class.

[Alpar Juttner]

Replying to deba:

I have uploaded a bundle for message handling in various solvers.

I prefer to see a cross reference to the ticket (i.e. "(#9)") in the log of commits belonging to a ticket.

[Balazs Dezso]

Unified message handling

[Balazs Dezso]

The patch [0cad57c38b52] contains unified message handling for solvers.

[Alpar Juttner]

I merged everything here into a single chgset and pushed to the main branches, see [745e182d0139].