TDbiValRecSet.hxx

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00001 #ifndef DBIVALRECSET
00002 #define DBIVALRECSET
00003 
00004 /**
00005  *
00006  * $Id: TDbiValRecSet.hxx,v 1.1 2011/01/18 05:49:20 finch Exp $
00007  *
00008  * \class TDbiValRecSet
00009  *
00010  *
00011  * \brief
00012  * <b>Concept</b>  A set of TDbiValidityRecs
00013  *
00014  * \brief
00015  * <b>Purpose</b> Provides a sequential access mechanism for an entire
00016  *   table via its auxillary Validity Range table
00017  *
00018  * Contact: A.Finch@lancaster.ac.uk
00019  *
00020  *
00021  */
00022 
00023 #include <map>
00024 #include <string>
00025 
00026 
00027 class TDbiResultSet;
00028 class TDbiValidityRec;
00029 
00030 class TDbiValRecSet
00031 {
00032 
00033 public:
00034 
00035 // Constructors and destructors.
00036            TDbiValRecSet(const string& tableName,UInt_t dbNo,UInt_t seqNo=0);
00037   virtual ~TDbiValRecSet();
00038 
00039 // State testing member functions
00040                UInt_t GetDbNo() const { return fDbNo; }
00041                UInt_t GetNumRows() const;
00042          const string GetTableName() const;
00043 const TDbiValidityRec* GetTableRow(UInt_t rowNum) const;
00044 const TDbiValidityRec* GetTableRowBySeqNo(UInt_t seqNo) const;
00045 
00046 // State changing member functions
00047 
00048 private:
00049 
00050 // Data members
00051 
00052 //// Database number used to fill
00053   UInt_t fDbNo;
00054 
00055 /// Result holding table of TDbiValidityRec
00056   TDbiResultSet* fResult;
00057 
00058 /// Lookup SeqNo -> TDbiValidityRec
00059 /// lazy creation - see GetTableRowBySeqNo
00060   mutable map<UInt_t,const TDbiValidityRec*>fSeqNoToRec;
00061 
00062  ClassDef(TDbiValRecSet,0)     //  A set of TDbiValidityRecs
00063 
00064 };
00065 
00066 
00067 
00068 #endif  // DBIVALRECSET
00069