TTableDescriptor

class description - source file - inheritance tree

class TTableDescriptor : public TTable


    protected:

      virtual TTableDescriptor* GetDescriptorPointer() const
                   virtual void Init(TClass* classPtr)
                   virtual void SetDescriptorPointer(TTableDescriptor* list) const

    public:

               TTableDescriptor TTableDescriptor(const TTable* parentTable)
               TTableDescriptor TTableDescriptor(TClass* classPtr)
               TTableDescriptor TTableDescriptor()
               TTableDescriptor TTableDescriptor(const Text_t* name)
               TTableDescriptor TTableDescriptor(Int_t n)
               TTableDescriptor TTableDescriptor(const Text_t* name, Int_t n)
               TTableDescriptor TTableDescriptor(TTableDescriptor&)
                   virtual void ~TTableDescriptor()
            tableDescriptor_st* begin() const
                 static TClass* Class()
                    const Int_t ColumnByName(const Char_t* columnName = 0) const
                  const Char_t* ColumnName(Int_t columnIndex) const
                         UInt_t ColumnSize(Int_t columnIndex) const
                          Int_t ColumnSize(const Char_t* columnName = 0) const
            TTable::EColumnType ColumnType(Int_t columnIndex) const
            TTable::EColumnType ColumnType(const Char_t* columnName = 0) const
                        TString CreateLeafList() const
                         UInt_t Dimensions(Int_t columnIndex) const
                          Int_t Dimensions(const Char_t* columnName = 0) const
            tableDescriptor_st* end() const
            tableDescriptor_st* GetTable(Int_t i = 0) const
                  const UInt_t* IndexArray(Int_t columnIndex) const
                virtual TClass* IsA() const
                           void LearnTable(const TTable* parentTable)
                           void LearnTable(TClass* classPtr)
                         UInt_t NumberOfColumns() const
                         UInt_t Offset(Int_t columnIndex) const
                          Int_t Offset(const Char_t* columnName = 0) const
            tableDescriptor_st& operator[](Int_t i)
      const tableDescriptor_st& operator[](Int_t i) const
                        TClass* RowClass() const
                           void SetColumnType(TTable::EColumnType type, Int_t column)
                           void SetDimensions(UInt_t dim, Int_t column)
                           void SetOffset(UInt_t offset, Int_t column)
                           void SetSize(UInt_t size, Int_t column)
                           void SetTypeSize(UInt_t size, Int_t column)
                   virtual void ShowMembers(TMemberInspector& insp, char* parent)
                   virtual void Streamer(TBuffer& b)
                         UInt_t TypeSize(Int_t columnIndex) const
                          Int_t TypeSize(const Char_t* columnName = 0) const
                  virtual Int_t UpdateOffsets(const TTableDescriptor* newDesciptor)

  Data Members

    protected:

                       TClass* fRowClass         TClass defining the table row C-structure
      static TTableDescriptor* fgColDescriptors

Class Description

void Streamer(TBuffer &R__b)

 The custom Streamer for this table

TTableDescriptor(const TTable *parentTable) : TTable("tableDescriptor",sizeof(tableDescriptor_st)), fRowClass(0)

TTableDescriptor(TClass *classPtr) : TTable("tableDescriptor",sizeof(tableDescriptor_st)),fRowClass(0)

 Create a descriptor of the C-structure defined by TClass
 TClass *classPtr must be a valid pointer to TClass object for
 "plain" C_struture only !!!

void Init(TClass *classPtr)

 Create a descriptor of the C-structure defined by TClass
 TClass *classPtr must be a valid pointer to TClass object for
 "plain" C_struture only !!!

~TTableDescriptor()

TString CreateLeafList() const

 Create a list of leaf to be useful for TBranch::TBranch ctor

void LearnTable(const TTable *parentTable)

void LearnTable(TClass *classPtr)

  LearnTable() creates an array of the descriptors for elements of the row

 It creates a descriptor of the C-structure defined by TClass
 TClass *classPtr must be a valid pointer to TClass object for
 "plain" C_struture only !!!

  This is to introduce an artificial restriction demanded by STAR database group

    1. the name may be 31 symbols at most
    2. the number the dimension is 3 at most

  To lift this restriction one has to provide -DNORESTRICTIONS CPP symbol and
  recompile code (and debug code NOW!)

Int_t UpdateOffsets(const TTableDescriptor *newDescriptor)

                  "Schema evolution"
 Method updates the offsets with a new ones from another descritor

const Int_t ColumnByName(const Char_t *columnName) const

 Find the column index but the column name

Int_t Offset(const Char_t *columnName) const

 Return offset of the column defined by "columnName"
 Take in account index if provided
 Can not handle multidimensional indeces yet.

Int_t ColumnSize(const Char_t *columnName) const

Int_t TypeSize(const Char_t *columnName) const

Int_t Dimensions(const Char_t *columnName) const

Inline Functions

                    const Char_t* ColumnName(Int_t columnIndex) const
                           UInt_t NumberOfColumns() const
                    const UInt_t* IndexArray(Int_t columnIndex) const
                            Int_t Offset(const Char_t* columnName = 0) const
                            Int_t ColumnSize(const Char_t* columnName = 0) const
                            Int_t TypeSize(const Char_t* columnName = 0) const
                            Int_t Dimensions(const Char_t* columnName = 0) const
              TTable::EColumnType ColumnType(Int_t columnIndex) const
              TTable::EColumnType ColumnType(const Char_t* columnName = 0) const
                          TClass* RowClass() const
                             void SetOffset(UInt_t offset, Int_t column)
                             void SetSize(UInt_t size, Int_t column)
                             void SetTypeSize(UInt_t size, Int_t column)
                             void SetDimensions(UInt_t dim, Int_t column)
                             void SetColumnType(TTable::EColumnType type, Int_t column)
                TTableDescriptor* GetDescriptorPointer() const
                             void SetDescriptorPointer(TTableDescriptor* list) const
                 TTableDescriptor TTableDescriptor()
                 TTableDescriptor TTableDescriptor(const Text_t* name)
                 TTableDescriptor TTableDescriptor(Int_t n)
                 TTableDescriptor TTableDescriptor(const Text_t* name, Int_t n)
              tableDescriptor_st* GetTable(Int_t i = 0) const
              tableDescriptor_st& operator[](Int_t i)
        const tableDescriptor_st& operator[](Int_t i) const
              tableDescriptor_st* begin() const
              tableDescriptor_st* end() const
                          TClass* Class()
                          TClass* IsA() const
                             void ShowMembers(TMemberInspector& insp, char* parent)
                 TTableDescriptor TTableDescriptor(TTableDescriptor&)

Author: Valery Fine 09/08/99 (E-mail: fine@bnl.gov)
Last update: root/star:$Name: $:$Id: TTableDescriptor.cxx,v 1.2 2000/06/05 08:01:03 brun Exp $

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