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Offers a way to interact with external code written in .NET from OPL.This feature would allow us to:• write a complex dedicated OR algorithm (such as a shortest path or flow algorithm) to be used as one step of a decomposed application• connect yo...
Actually we have to use OPL script to attach a relaxation priority to a constraint. It will be easier to attach this priority at the creation of the constraint. Reason is that a constraint tupleset can easily include a priority field: tuple rvCons...
Piecewise function with input as coordinate (x,y) of curve's points
the actual piecewise function in OPL takes as input abscissas and vector coefficient to construct the function.Many time people have user have the (x;y) coordinate. to do that you need to write OPL code to find the vector coefficient.Would be grea...
Callbacks are available from CP using C++ or Java, but not if using the API from C# (or any .Net language). This seems to be very strange as the internal structures must be there inside the CP libraries etc in order to support the callbacks from C...
In OPL ODBC connection, add a setting for batch size
The prebuilt ODBCConnection allows OPL to access databases using ODBC. One way to optimize database access is to tune the execution batch size. With older versions of OPL that included DBLink, this was the dbUpdateBatchSize parameter.
Make CP cumulFunction and expressions accept float instead of int
cumulFunction and expressions currently only allow the resource usage to be int which is not useful for all resource types. Whilst a workaround of multiplying the int by a large number to approximate the float is possible there are limitations and...
We are looking at CPLEX on zOS.Today, only compiling a C++ program can be used to drive CPLEX on the z platform. It would be much easier to be able to inject OPL directly in (concert, part of ) CPLEX for z/OS.
Improve OPL Interfaces by providing dynamically typed API and a “façade” compatible with the .NET framework
Using OPL interface in .Net is cumbersome. Manipulate data elements object and result is far from being trivial.By example, instantiate an int look like that: OplDataSource dataSource = new MyCustomDataSource(oplF); internal class MyCustomDataSour...
Improve OPL Interfaces by providing field access infer by using the OPL model schema
Modify coefficient, adding variable, iterate on tupleset, modifiing dataElements and almost all operation in the OPL interface are really counter intuitive. Object uses by OPL are not directly compatible with the framework object. Ituple!= Tuple. ...
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