TKeySQL

class TKeySQL : public TKey

    protected:

                    TKeySQL()
      virtual Int_t Read(const char* name)
              void* ReadKeyObject(void* obj, const TClass* expectedClass)
               void StoreKeyObject(const void* obj, const TClass* cl)

    public:

                       TKeySQL(TDirectory* mother, const TObject* obj, const char* name, const char* title = "0")
                       TKeySQL(TDirectory* mother, const void* obj, const TClass* cl, const char* name, const char* title = "0")
                       TKeySQL(TDirectory* mother, Long64_t keyid, Long64_t objid, const char* name, const char* title, const char* keydatetime, Int_t cycle, const char* classname)
                       TKeySQL(const TKeySQL&)
               virtual ~TKeySQL()
        static TClass* Class()
          virtual void Delete(Option_t* option = "")
          virtual void DeleteBuffer()
          virtual void FillBuffer(char*&)
         virtual char* GetBuffer() const
              Long64_t GetDBDirId() const
              Long64_t GetDBKeyId() const
              Long64_t GetDBObjId() const
      virtual Long64_t GetSeekKey() const
      virtual Long64_t GetSeekPdir() const
       virtual TClass* IsA() const
                Bool_t IsKeyModified(const char* keyname, const char* keytitle, const char* keydatime, Int_t cycle, const char* classname)
          virtual void Keep()
              TKeySQL& operator=(const TKeySQL&)
         virtual Int_t Read(TObject* obj)
          virtual void ReadBuffer(char*&)
          virtual void ReadFile()
      virtual TObject* ReadObj()
         virtual void* ReadObjectAny(const TClass* expectedClass)
          virtual void SetBuffer()
          virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)
         virtual Int_t WriteFile(Int_t = 1, TFile* = 0)

Data Members

    protected:

      Long64_t fKeyId  !  key identifier in KeysTables
      Long64_t fObjId  !  stored object identifer

Class Description

 TKeySQL is represents a metainforamtion about object, which was written to
 SQL database. It keeps object id, which used to locate object data
 from database tables.
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 default constructor

 Creates TKeySQL and convert obj data to TSQLStructure via TBufferSQL2

 Creates TKeySQL and convert obj data to TSQLStructure via TBufferSQL2

 Create TKeySQL object, which correponds to single entry in keys table

 TKeySQL destructor

 Compares keydata with provided and return kTRUE if key was modified
 Used in TFile::StreamKeysForDirectory() method to verify data for that keys
 should be updated

 Removes key from current directory
 Note: TKeySQL object is not deleted. You still have to call "delete key"

 return sql id of parent directory

 To read an object from the file.
 The object associated to this key is read from the file into memory.
 Before invoking this function, obj has been created via the
 default constructor.

 Read object derived from TObject class
 If it is not TObject or in case of error, return 0

 read object of any type from SQL database

Inline Functions

           Long64_t GetDBKeyId() const
           Long64_t GetDBObjId() const
               void DeleteBuffer()
               void FillBuffer(char*&)
              char* GetBuffer() const
           Long64_t GetSeekKey() const
           Long64_t GetSeekPdir() const
               void Keep()
              Int_t Read(TObject* obj)
               void ReadBuffer(char*&)
               void ReadFile()
               void SetBuffer()
              Int_t WriteFile(Int_t = 1, TFile* = 0)
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)
            TKeySQL TKeySQL(const TKeySQL&)
           TKeySQL& operator=(const TKeySQL&)