#ifndef DBIBINARYFILE_H #define DBIBINARYFILE_H /** * * \class COMET::IDbiBinaryFile * * * \brief * Concept Binary file for reading/writing IDbi related objects. * * \brief * Purpose To save/restore cache to speed up startup when running * in the same context. * * Contact: A.Finch@lancaster.ac.uk * * */ #include using std::fstream; using std::ios_base; #include using std::string; #include using std::vector; #ifndef ROOT_Rtypes #if !defined(__CINT__) || defined(__MAKECINT__) #include "Rtypes.h" #endif #endif namespace COMET { class IDbiTableRow; } namespace COMET { class IVldTimeStamp; }; namespace COMET { class IVldRange; }; namespace COMET { class IDbiBinaryFile { public: /// ///\verbatim /// Purpose: Default Constructor. /// /// Arguments: /// fileName in File name (default: "" => file is a dummy) /// input in true if reading (default = kTRUE) /// /// Specification:- /// ============= /// /// If file name or fgWorkDir is dummy, or the appropriate access is not set ///\endverbatim 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/ then name is set to dummy otherwise fgWorkDir is prepended to the name. IDbiBinaryFile(const char* fileName= "", Bool_t input = kTRUE); ~IDbiBinaryFile(); // State testing. string GetFileName() const { return fFileName; } Bool_t IsOK() const { return ! fHasErrors;} Bool_t IsReading() const { return this->IsOK() && fReading; } Bool_t IsWriting() const { return this->IsOK() && ! fReading; } // State changing. void Close(); /// Builtin data type I/O. COMET::IDbiBinaryFile& operator >> (Bool_t& num); COMET::IDbiBinaryFile& operator << (const Bool_t& num); COMET::IDbiBinaryFile& operator >> (Int_t& num); COMET::IDbiBinaryFile& operator << (const Int_t& num); COMET::IDbiBinaryFile& operator >> (UInt_t& num); COMET::IDbiBinaryFile& operator << (const UInt_t& num); COMET::IDbiBinaryFile& operator >> (Double_t& num); COMET::IDbiBinaryFile& operator << (const Double_t& num); /// Simple Virtual object I/O. /// (i.e. object with vptr but only built-in data types) COMET::IDbiBinaryFile& operator >> (COMET::IVldTimeStamp& ts); COMET::IDbiBinaryFile& operator << (const COMET::IVldTimeStamp& ts); /// String I/O. /// Warning: Implimentation assumes that string does not contain /// a null character. COMET::IDbiBinaryFile& operator >> (string& str); COMET::IDbiBinaryFile& operator << (const string& str); /// Compound object I/O. COMET::IDbiBinaryFile& operator >> (COMET::IVldRange& vr); COMET::IDbiBinaryFile& operator << (const COMET::IVldRange& vr); /// Vector I/O. COMET::IDbiBinaryFile& operator >> (vector& arr); COMET::IDbiBinaryFile& operator << (vector& arr); char* ReleaseArrayBuffer() { char* buff = fArrayBuffer; fArrayBuffer = 0; return buff; } /// Global control of all created IDbiBinaryFile objects. static Bool_t CanReadL2Cache() { return fgWorkDir.size() && fgReadAccess; } static Bool_t CanWriteL2Cache() { return fgWorkDir.size() && fgWriteAccess; } static void SetWorkDir(const string& dir) { fgWorkDir = dir; if ( fgWorkDir[fgWorkDir.size()-1] != '/' ) fgWorkDir += '/'; } static void SetReadAccess(Bool_t access = kTRUE) { fgReadAccess = access; } static void SetWriteAccess(Bool_t access = kTRUE) { fgWriteAccess = access; } private: /// The functions that do the low-level I/O. Bool_t CanRead(); Bool_t CanWrite(); void CheckFileStatus(); Bool_t Read(char* bytes, UInt_t numBytes); Bool_t Write(const char* bytes, UInt_t numBytes); // CINT does not recognise fstream; only ifstream and ofstream. #if !defined(__CINT__) /// Associated file, may be null. fstream* fFile; #endif Bool_t fReading; Bool_t fHasErrors; char* fArrayBuffer; string fFileName; static string fgWorkDir; //Level 2 Cache directory or null if none. static Bool_t fgReadAccess; //Have read access if true. static Bool_t fgWriteAccess;//Have write access if true. }; }; #endif // DBIBINARYFILE_HfArrayBuffer