TGenericTable
class description - source file - inheritance tree
protected:
virtual TTableDescriptor* GetDescriptorPointer() const
virtual void SetDescriptorPointer(TTableDescriptor* list)
void SetGenericType()
public:
TGenericTable TGenericTable()
TGenericTable TGenericTable(const char* structName, const Text_t* name)
TGenericTable TGenericTable(const char* structName, Int_t n)
TGenericTable TGenericTable(const char* structName, const Text_t* name, Int_t n)
TGenericTable TGenericTable(const TTableDescriptor& dsc, const Text_t* name)
TGenericTable TGenericTable(const TTableDescriptor& dsc, Int_t n)
TGenericTable TGenericTable(const TTableDescriptor& dsc, const Text_t* name, Int_t n)
TGenericTable TGenericTable(const TGenericTable&)
virtual void ~TGenericTable()
TGenericTable::iterator begin()
TGenericTable::iterator begin() const
static TClass* Class()
TGenericTable::iterator end()
TGenericTable::iterator end() const
virtual TTableDescriptor* GetRowDescriptors() const
char* GetTable(Int_t i = 0) const
virtual TTableDescriptor* GetTableDescriptors() const
virtual TClass* IsA() const
char& operator[](Int_t i)
const char& operator[](Int_t i) const
virtual void ShowMembers(TMemberInspector& insp, char* parent)
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
protected:
TTableDescriptor* fColDescriptors
See also
-
TResponseTable
TGenericTable
This is the class to represent the array of C-struct
defined at run-time
Example: see $ROOTSYS/star/demo/staff.C
-------
!{
!// example of macro to read data from an ascii file and
!// create a root file with an histogram and an ntuple.
!// A'la the famous ROOT/PAW staff data example
!// ( see PAW - Long write up, CERN, page33. )
!
! gROOT->Reset();
! gSystem->Load("libRootKernel");
!
! struct staff_t {
! Int_t cat;
! Int_t division;
! Int_t flag;
! Int_t age;
! Int_t service;
! Int_t children;
! Int_t grade;
! Int_t step;
! Int_t nation;
! Int_t hrweek;
! Int_t cost;
! };
!
! staff_t staff;
!
! // open ASCII data file
! FILE *fp = fopen("staff.dat","r");
!
! char line[81];
!
! // Create the generic table for 1000 rows (it may grow then)
! TGenericTable *allStaff = new TGenericTable("staff_t","Staff-data",1000);
!
! // Fill the memory resident table
! while (fgets(&line,80,fp)) {
! sscanf(&line[0] ,"%d%d%d%d", &staff.cat,&staff.division,&staff.flag,&staff.age);
! sscanf(&line[13],"%d%d%d%d", &staff.service,&staff.children,&staff.grade,&staff.step);
! sscanf(&line[24],"%d%d%d", &staff.nation,&staff.hrweek,&staff.cost);
! allStaff->AddAt(&staff);
! }
! fclose(fp);
! // Delete unused space;
! allStaff->Purge();
!
! allStaff->Print(0,10);
!
!// Create ROOT file
! TFile *f = new TFile("aptuple.root","RECREATE");
! allStaff->Write();
! f->Write();
!
! // We should close TFile otherwise all histograms we create below
! // may be written to the file too occasionaly
! f->Close();
!
!// Create ROOT Browser
! new TBrowser("staff",allStaff);
!
!// Create couple of the histograms
! TCanvas *canva = new TCanvas("Staff","CERN Population",600,600);
! canva->Divide(1,2);
!
!
!// one can use 2 meta variable:
!// n$ - the total number of the rows in the table
!// i$ - stands for the current row index i = [0 -> (n$-1)]
!
! gStyle->SetHistFillColor(10);
! gStyle->SetHistFillStyle(3013);
! canva->cd(1);
! allStaff->Draw("age");
! canva->Update();
! canva->cd(2);
! allStaff->Draw("cost");
! canva->Update();
!}
TGenericTable(const TTableDescriptor &dsc, const Text_t *name) : TTable(name,dsc.Sizeof()),fColDescriptors(0)
Create TGenericTable by TTableDescriptor pointer:
dsc - Pointer to the table descriptor
name - The name of this object
TGenericTable(const TTableDescriptor &dsc, Int_t n) : TTable("TGenericTable",n,dsc.Sizeof()),fColDescriptors(0)
Create TGenericTable by TTableDescriptor pointer:
dsc - Pointer to the table descriptor
name - "TGenericTable"
n - The initial number of allocated rows
TGenericTable(const TTableDescriptor &dsc,const Text_t *name,Int_t n) : TTable(name,n,dsc.Sizeof()),fColDescriptors(0)
Create TGenericTable by TTableDescriptor pointer:
dsc - Pointer to the table descriptor
name - The name of this object
n - The initial number of allocated rows
TGenericTable(const char *structName, const Text_t *name) : TTable(name,-1),fColDescriptors(0)
Create TGenericTable by C structure name provided:
dsc - Pointer to the table descriptor
name - The name of this object
n - The initial number of allocated rows
TGenericTable(const char *structName, Int_t n) : TTable("TGenericTable",-1),fColDescriptors(0)
Create TGenericTable by C structure name provided:
dsc - Pointer to the table descriptor
name - The name of this object
n - The initial number of allocated rows
TGenericTable(const char *structName, const Text_t *name,Int_t n) : TTable(name,-1),fColDescriptors(0)
Create TGenericTable by C structure name provided:
dsc - Pointer to the table descriptor
name - The name of this object
n - The initial number of allocated rows
~TGenericTable()
Inline Functions
TTableDescriptor* GetDescriptorPointer() const
void SetDescriptorPointer(TTableDescriptor* list)
void SetGenericType()
TGenericTable TGenericTable(const TTableDescriptor& dsc, const Text_t* name, Int_t n)
char* GetTable(Int_t i = 0) const
TTableDescriptor* GetTableDescriptors() const
TTableDescriptor* GetRowDescriptors() const
char& operator[](Int_t i)
const char& operator[](Int_t i) const
TGenericTable::iterator begin()
TGenericTable::iterator begin() const
TGenericTable::iterator end()
TGenericTable::iterator end() const
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
TGenericTable TGenericTable(const TGenericTable&)
Author: Valery Fine(fine@bnl.gov) 30/06/2001
Last update: root/star:$Name: $Id: TGenericTable.cxx,v 1.3 2003/01/27 20:41:36 brun Exp $
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