[kaifu]

Hi, Foamers

Openfoam is an OpenSource CFD, but I cannot find the class members "MeshConstructorTablePtr_"
and the relevant type "MeshConstructorTable::iterator" in surfaceInterpolationScheme.C

    typename MeshConstructorTable::iterator constructorIter =
        MeshConstructorTablePtr_->find(schemeName);

I can find the relevant info from web elsewhere, like

typedef tmp<surfaceInterpolationScheme> (*MeshConstructorPtr) (const fvMesh& mesh, Istream& schemeData);

typedef HashTable<MeshConstructorPtr, word, string::hash> MeshConstructorTable;

But it's weird that I cannot find the statement in the official published codes. Can somebody help me?

[chegdan]

The quick answer is that this is all performed through the runtime selection mechanism setup via c++ macros. Take a look at the wiki entry on the runTimeSelection mechanism

You will notice in other files there are things like

    defineRunTimeSelectionTable(GAMGAgglomeration, lduMesh);

and then later in that same file and class, you will see

        lduMeshConstructorTable::iterator cstrIter =
            lduMeshConstructorTablePtr_->find(agglomeratorType);

this is the result of the c++ Macros defined in

src/OpenFOAM/db/runTimeSelection/construction/runTimeSelectionTables.H

That has particular keywords replaced during compilation and completed with the arguments provided in for example "defineRunTimeSelectionTable" call. A very simple explanation for something that is very cool within OpenFOAM. Good luck.