FunctionObjectValue.H

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 2021 OpenCFD Ltd.
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.
 
    OpenFOAM is free software: you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.
 
    OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with OpenFOAM.  If not, see <http://www.gnu.org/licenses/>.
 
Class
    Foam::Function1Types::FunctionObjectValue
 
Description
    Returns a value retrieved from a function object result.
 
    Usage:
    \verbatim
        <entryName> functionObjectValue;
        <entryName>Coeffs
        {
            functionObject          <name>;
            functionObjectResult    <function object result field>;
            defaultValue            <value>; // optional
        }
    \endverbatim
 
Note
- does not implement integrate()
 
SourceFiles
    FunctionObjectValue.C
    FunctionObjectValueI.H
 
\*---------------------------------------------------------------------------*/
 
#ifndef Function1Types_FunctionObjectValue_H
#define Function1Types_FunctionObjectValue_H
 
#include "Function1.H"
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
namespace Function1Types
{
 
/*---------------------------------------------------------------------------*\
                     Class FunctionObjectValue Declaration
\*---------------------------------------------------------------------------*/
 
template<class Type>
class FunctionObjectValue
:
    public Function1<Type>
{
    // Private Data
 
        //- Function object name
        word foName_;
 
        //- Function object result name
        word foResultName_;
 
        //- Default value when function object result is unavailable
        Type defaultValue_;
 
        //- Flag to indicate that default value is available
        bool haveDefaultValue_;
 
 
    // Private Member Functions
 
        //- Read the coefficients from the given dictionary
        void read(const dictionary& coeffs);
 
 
public:
 
    //- Runtime type information
    TypeName("functionObjectValue");
 
 
    // Generated Methods
 
        //- No copy assignment
        void operator=(const FunctionObjectValue<Type>&) = delete;
 
 
    // Constructors
 
        //- Construct from entry name, dictionary and optional registry
        FunctionObjectValue
        (
            const word& entryName,
            const dictionary& dict,
            const objectRegistry* obrPtr = nullptr
        );
 
        //- Copy construct
        explicit FunctionObjectValue(const FunctionObjectValue<Type>& rhs);
 
        //- Construct and return a clone
        virtual tmp<Function1<Type>> clone() const
        {
            return tmp<Function1<Type>>(new FunctionObjectValue<Type>(*this));
        }
 
 
    //- Destructor
    virtual ~FunctionObjectValue() = default;
 
 
    // Member Functions
 
        //- Return value at current time
        virtual inline Type value(const scalar /*unused*/) const;
 
        //- Integrate between two (scalar) values. Not implemented!
        virtual Type integrate(const scalar x1, const scalar x2) const;
 
        //- Write in dictionary format
        virtual void writeData(Ostream& os) const;
 
        //- Write coefficient entries in dictionary format
        virtual void writeEntries(Ostream& os) const;
};
 
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Function1Types
} // End namespace Foam
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#include "FunctionObjectValueI.H"
 
#ifdef NoRepository
    #include "FunctionObjectValue.C"
#endif
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
#endif
 
// ************************************************************************* //