DbiTableMetaData.h

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#ifndef DBITABLEMETADATA_H
#define DBITABLEMETADATA_H



#include <string>
using std::string;
#include <vector>

#include "DatabaseInterface/DbiFieldType.h"

class DbiTableMetaData
{

  friend class DbiDBProxy;  //See ctor program notes.

public:

// Constructors and destructors.
           DbiTableMetaData(const string& tableName = "Unknown");
  virtual ~DbiTableMetaData();

// State testing member functions

  string Sql(Dbi::DbTypes dbType = Dbi::kMySQL) const;

  string TableName() const { return fTableName; }
  Bool_t HasRowCounter() const {return  this->NumCols() >=2 && this->ColName(2) == "ROW_COUNTER"; }
  UInt_t NumCols() const { return fNumCols;}
 
// Column attribute getters (columns number starts from 1 NOT zero)

 const DbiFieldType& ColFieldType(Int_t colNum) const    { return GetAttributes(colNum).Type;}
              UInt_t ColFieldConcept(Int_t colNum) const { return GetAttributes(colNum).Concept;} 
              Bool_t ColIsNullable(Int_t colNum) const   { return GetAttributes(colNum).IsNullable;} 
              Bool_t ColMustDelimit(Int_t colNum) const  { return GetAttributes(colNum).MustDelimit;} 
              string ColName(Int_t colNum) const         { return GetAttributes(colNum).Name;} 

// State changing member functions

      void SetFromSql(const string& sql);

protected:  

      void Clear();

// Column attribute setters (columns number starts from 1 NOT zero)

      void SetColIsNullable(Int_t colNum, Bool_t isNullable = true) { SetAttributes(colNum).IsNullable = isNullable;}
      void SetColName(const string& name, Int_t colNum)             { SetAttributes(colNum).Name = name;}
      void SetColFieldType(const DbiFieldType& type, Int_t colNum);

 private:

  static string GetToken(const char*& strPtr);

  enum { MAXCOL = 1000};

  void ExpandTo(UInt_t colNum);

 struct ColumnAttributes {
   ColumnAttributes() { this->SetDefault(); }
   void SetDefault() {
     Name        = "Unknown";
     Concept     = Dbi::kUnknown;
     MustDelimit = false;
     IsNullable  = false;
     Type        = Dbi::kUnknown;
   }
   string Name;
   Int_t Concept;
   Bool_t MustDelimit;
   Bool_t IsNullable;
   DbiFieldType Type;
 }; 

  static ColumnAttributes fgDummy;


  const ColumnAttributes& GetAttributes(Int_t colNum) const;

  ColumnAttributes& SetAttributes(Int_t colNum);

// Data members

  std::vector<ColumnAttributes> fColAttr; 

  UInt_t fNumCols;         

  string fTableName;

ClassDef(DbiTableMetaData,0)     //TableMetaData for database table 

};


#endif  // DBITABLEMETADATA_H

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