Hi Kish.
Kish Shen wrote:
> We have been thinking about developing an interface to GeCode for the
> Constraint Logic Programming language ECLiPSe for a while now, and
> finally I can devote some time and resource to this.
>
> The idea is to provide an alternative FD solver for ECLiPSe, in
> addition
> to the existing native FD solver(s) already available.
>
> I have been looking at the available documentation, which seems to be
> mostly documentation for the procedures. I am wondering if there are
> more documentations available, especially for the purpose of
> interfacing
> to other languages.
No, there's (currently) no such documentation. Most of the interfaces
to Gecode use some kind of interface generator, like swig for the Java
interface, which basically takes the C++ header files and generates
the interfacing code.
However, interfacing is not so much different from programming models
directly in C++. You have to provide ways to construct a space and
variables, and the post functions for constraints and branchings.
Alternatively, you can use the reflection API for interfacing (as done
in gecode/serialization/javascript.{hh,cpp} and examples/
javascript.cpp), which has the advantage that the necessary interface
is much smaller.
> What I would like to do is to provide both a black-box search, i.e.
> with the constraints posted by ECLiPSe to GeCode, and then the GeCode
> search invoked. Secondly, I would like to do the search in ECLiPSe,
> with
> GeCode doing the propagation. Do you think these are sensible
> approaches?
Yes, that's should be doable. In particular the black-box approach
should work easily. The interaction with the ECLiPSe search should
also be doable, but requires a little more engineering, I guess.
Cheers,
Guido
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