ARow.h

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#ifndef OPAL_ARow_HH
#define OPAL_ARow_HH
 
// ------------------------------------------------------------------------
// $RCSfile: ARow.h,v $
// ------------------------------------------------------------------------
// $Revision: 1.1.1.1 $
// ------------------------------------------------------------------------
// Copyright: see Copyright.readme
// ------------------------------------------------------------------------
//
// Class: ARow
//
// ------------------------------------------------------------------------
//
// $Date: 2000/03/27 09:33:41 $
// $Author: Andreas Adelmann $
//
// ------------------------------------------------------------------------
 
#include <iosfwd>
#include <vector>
#include "AbstractObjects/Expressions.h"
#include "AbstractObjects/PlaceRep.h"
 
namespace Expressions {
 
    // Class ARow.
    // ----------------------------------------------------------------------
    //  The result is an array formed by the values found in selected
    //  columns of a given row.
 
    class ARow : public OArray<double> {
    public:
        //  Identify the table by [b]tabName[/b] and the row by the place
        //  reference [b]row[/b].  The array [b]col[/b] contains the column
        //  names to select the columns by name.
        ARow(const std::string& tabName, const PlaceRep& row, const std::vector<std::string>& col);
 
        ARow(const ARow&);
        ~ARow();
 
        virtual OArray<double>* clone() const;
 
        virtual std::vector<double> evaluate() const;
 
        virtual void print(std::ostream& os, int precedence = 99) const;
 
    private:
        // Not implemented.
        ARow();
        const ARow& operator=(const ARow&);
 
        // The table name.
        const std::string tabName;
 
        // The row specification.
        PlaceRep position;
 
        // The std::vector of column names.
        const std::vector<std::string> columns;
    };
 
}  // namespace Expressions
 
#endif  // OPAL_ARow_HH