fieldExpression.C

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/*---------------------------------------------------------------------------*\
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-------------------------------------------------------------------------------
    Copyright (C) 2016 OpenFOAM Foundation
    Copyright (C) 2019 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.
 
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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    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
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\*---------------------------------------------------------------------------*/
 
#include "fieldExpression.H"
#include "dictionary.H"
 
// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //
 
namespace Foam
{
namespace functionObjects
{
    defineTypeNameAndDebug(fieldExpression, 0);
}
}
 
 
// * * * * * * * * * * * * * Protected Member Functions  * * * * * * * * * * //
 
void Foam::functionObjects::fieldExpression::setResultName
(
    const word& typeName,
    const word& defaultArg
)
{
    if (fieldName_.empty())
    {
        fieldName_ = defaultArg;
    }
 
    if (resultName_.empty())
    {
        if (fieldName_ != defaultArg)
        {
            resultName_ = typeName + '(' + fieldName_ + ')';
        }
        else
        {
            resultName_ = typeName;
        }
    }
}
 
 
// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //
 
Foam::functionObjects::fieldExpression::fieldExpression
(
    const word& name,
    const Time& runTime,
    const dictionary& dict,
    const word& fieldName,
    const word& resultName
)
:
    fvMeshFunctionObject(name, runTime, dict),
    fieldName_(fieldName),
    resultName_(resultName)
{
    read(dict);
}
 
 
// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //
 
bool Foam::functionObjects::fieldExpression::read(const dictionary& dict)
{
    fvMeshFunctionObject::read(dict);
 
    if (fieldName_.empty() || dict.found("field"))
    {
        dict.readEntry("field", fieldName_);
    }
 
    dict.readIfPresent("result", resultName_);
 
    return true;
}
 
 
bool Foam::functionObjects::fieldExpression::execute()
{
    if (!calc())
    {
        Warning
            << "    functionObjects::" << type() << " " << name()
            << " failed to execute." << endl;
 
        // Clear the result field from the objectRegistry if present
        clear();
 
        return false;
    }
 
    return true;
}
 
 
bool Foam::functionObjects::fieldExpression::write()
{
    return writeObject(resultName_);
}
 
 
bool Foam::functionObjects::fieldExpression::clear()
{
    return clearObject(resultName_);
}
 
 
// ************************************************************************* //