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FBwFieldList.h

Go to the documentation of this file.

//---------------------------------------------------------------------------
//---------------------------------------------------------------------------

#ifndef FBwFieldListH
#define FBwFieldListH
#include <vector>
//---------------------------------------------------------------------------

namespace fbwrap
{

// What are we using from standard libraries
using std::string;
using std::vector;

// Avoid Circular dependencies
class FBwDb;

// ! A class for managing hiden order index in FieldLists
class FieldListIndex
{
    int nIdx;
public:

    FieldListIndex(int idx=0)
    {
        nIdx=idx;
    }
    int Idx() const
    {
        return nIdx;
    }
};

//

class FieldList
{
    vector<FBwField *> fields;
    int nullSize;
    FBwDb *db;
    // The following members are used by << operator!!!!
    int aFldIdx;        
    int IncaFldIdx()    
    {
        int ant=aFldIdx;
        aFldIdx = ((aFldIdx == Count()-1)? 0 : aFldIdx+1);
        return ant;
    }
    friend FieldList &operator <<(FieldList &f,const string &s);
    friend FieldList &operator <<(FieldList &f,const char *s);
    friend FieldList &operator <<(FieldList &f,const FBwDate &d);
    friend FieldList &operator <<(FieldList &f,const FBwTime &t);
    friend FieldList &operator <<(FieldList &f,const FBwDateTime &dt);
    friend FieldList &operator <<(FieldList &f,int  i);
    friend FieldList &operator <<(FieldList &f,long long int  i);
    friend FieldList &operator <<(FieldList &f,double  d);
    //friend FieldList &operator <<(FieldList &f,long double  d);
    friend FieldList &operator <<(FieldList &f,const FieldListIndex &idx);
public:

    FieldList(FBwDb *pdb) :
            fields(0)
    {
        nullSize=-1;
        db=pdb;
        aFldIdx=0;
    }
    void Add(FBwField *pfld);                   
    FBwField *FindField(int idx) const;         
    FBwField *FindField(string fname) const;    
    FBwField *operator[](int idx) const;        
    FBwField *operator[](string fldname) const; 
    void DestroyFields();               
    void CreateFrom(XSQLDA *xsql);      

    void CreateFrom(const FieldList &fl, int from=0, int to=-1);    
    void BindParams(XSQLDA *xsql);
    FBwField *CreateField(XSQLVAR &xv, int i);  
    void ConvertStoV();
    void ConvertVtoS();
    ~FieldList()
    {
        DestroyFields();
    }
    // state methods
    //
    bool IsEmpty()              
    {
        return fields.size()==0;
    }
    int Count() const           
    {
        return fields.size();
    }
    void SetDb(FBwDb *pdb)      
    {
        db=pdb;
    }
    FieldList &operator=(const FieldList &f);   
    void CopyByName(const FieldList &p);        

    void CopyByIdx(const FieldList &p,int tfrom, int sfrom, int to);
    void SetAllNull();                          
    void SetUnasigned();                        
    int ByteLen();                              
    void Write(char *p);                        
    void Read(char *p);                         
};
FieldList &operator ,(FieldList &List,FBwField *fld);
FieldList &operator +(FieldList &List,FBwField *fld);

//-------------------------------------------------------------------------
}
#endif

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