[Cbc] Solution callbacks

[Gleb Belov]

Hi John,

there is demand for continuous solution output so I am trying this. 
Looks like I need a method to obtain the PreProcess object during 
solving (because it is created in CbcMain1). BTW you say postsolve 
deletes data but the 2nd parameter could be used to avoid this?

What is the usage of the callback function opposed to the event handler? 
I don't see how I can use the callback because in interrupt.cpp the 
MyEventHandler3 class is used to print a solution.

Gleb

>
> Gleb,
>
> On 08/10/15 05:56, Gleb Belov wrote:
> >/Hi, what is currently good way to have a solution callback in Cbc? the />/interrupt example shows 2 ways, don't know which is right. />//
> It is the event handling code you would be using.
> >/Moreover, it says that the solution would be given for the />/preprocessed model. Is it possible to produce one for the original? /
> At present no.  In principle not difficult.  First the callback function
> would have to be modified to get passed the CglPreProcess object -
> easy.  Then in event handler you could make a copy of object and
> postsolve (you need a copy as postsolve deletes data).
> >/Is it possible to call other functions from inside, such as number of />/nodes, dual bound? /
> Yes - you have CbcModel * model_ so things like that are available (or
> could easily be made available)
>
> >//>/Thanks />//
> John Forrest
>

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