TKeyXML

class TKeyXML : public TKey

    protected:

                    TKeyXML()
      virtual Int_t Read(const char* name)
               void StoreKeyAttributes()
               void StoreObject(const void* obj, const TClass* cl)
        TXMLEngine* XMLEngine()
              void* XmlReadAny(void* obj, const TClass* expectedClass)

    public:

                       TKeyXML(TDirectory* mother, Long64_t keyid, const TObject* obj, const char* name = "0", const char* title = "0")
                       TKeyXML(TDirectory* mother, Long64_t keyid, const void* obj, const TClass* cl, const char* name, const char* title = "0")
                       TKeyXML(TDirectory* mother, Long64_t keyid, XMLNodePointer_t keynode)
                       TKeyXML(const TKeyXML&)
               virtual ~TKeyXML()
        static TClass* Class()
          virtual void Delete(Option_t* option = "")
          virtual void DeleteBuffer()
          virtual void FillBuffer(char*&)
         virtual char* GetBuffer() const
              Long64_t GetKeyId() const
      virtual Long64_t GetSeekKey() const
      virtual Long64_t GetSeekPdir() const
       virtual TClass* IsA() const
                Bool_t IsSubdir() const
          virtual void Keep()
      XMLNodePointer_t KeyNode() const
         virtual Int_t Read(TObject* tobj)
          virtual void ReadBuffer(char*&)
          virtual void ReadFile()
      virtual TObject* ReadObj()
         virtual void* ReadObjectAny(const TClass* expectedClass)
          virtual void SetBuffer()
                  void SetSubir()
          virtual void ShowMembers(TMemberInspector& insp, char* parent)
          virtual void Streamer(TBuffer& b)
                  void StreamerNVirtual(TBuffer& b)
                  void UpdateAttributes()
                  void UpdateObject(TObject* obj)
         virtual Int_t WriteFile(Int_t = 1, TFile* = 0)

Data Members

    protected:

      XMLNodePointer_t fKeyNode  ! node with stored object
              Long64_t fKeyId    ! unique identifier of key for search methods
                Bool_t fSubdir   ! indicates that key contains subdirectory

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 TKeyXML is represents one block of data in TXMLFile
 Normally this block corresponds to data of single object like histogram,
 TObjArray and so on.
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 default constructor

 Creates TKeyXML and convert obj data to xml structures

 Creates TKeyXML and convert obj data to xml structures

 Creates TKeyXML and takes ownership over xml node, from which object can be restored

 TKeyXML destructor

 Stores keys attributes in key node

  convert object to xml structure and keep this structure in key

 update key attributes in key node

 updates object, stored in the node
 Used for TDirectory data update

 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, from key
 if it is not TObject or in case of error, return 0

 read object of any type

 read object from key and cast to expected class

 return pointer on TXMLEngine object, used for xml conversion

 redefined TKey Methods

virtual ULong_t   Hash() const { return 0; }