Hi,
I’ve been playing with the having multiple embedded custom classes. I originally wanted vectors of vectors of objects, but that seems too many variable arrays. So I tried having a vector of an object that holds an array of another object.
class SecondEmbeddedClass : public TObject {
public:
SecondEmbeddedClass() { variable2=2; variable3 = 3;}
virtual ~SecondEmbeddedClass() {;}
double variable2;
int variable3;
ClassDef(SecondEmbeddedClass, 1)
};
class FirstEmbeddedClass : public TObject {
public:
FirstEmbeddedClass() { variable1=1; }
virtual ~FirstEmbeddedClass() {;}
double variable1;
SecondEmbeddedClass secondvector[10]; //[10] tired //-> with the same results
ClassDef(FirstEmbeddedClass, 1)
};
class MainClass : public TObject {
public:
MainClass() { variable0=0; firstvector.resize(5); }
virtual ~MainClass() {;}
double variable0;
std::vector<FirstEmbeddedClass> firstvector;
ClassDef(MainClass, 1)
};#include "MyClasses.h"
#include "TFile.h"
#include "TTree.h"
using namespace std;
void Test(int argc, char *argv[]) {
MainClass *myclass = new MainClass();
TFile f("MyClasses.root", "recreate");
TTree *tree = new TTree("tree", "Testing");
tree->Branch("main", "MainClass", &myclass, 32000, 99);
tree->Fill();
tree->Write();
delete tree;
delete myclass;
}
#ifndef __MAKECINT__
int main(int argc, char *argv[]) {
Test(argc, argv);
return 0;
}
#endifThe code compiled and ran without warnings or errors. When I opened up the root file, the TTree viewer had a leaf with no name attached to it.
I check the Streamer info, which looked fine.
root [2] f.ShowStreamerInfo()
OBJ: TList TList Doubly linked list : 0
StreamerInfo for class: MainClass, version=1, checksum=0xf9da1a25
TObject BASE offset= 0 type=66 Basic ROOT object
double variable0 offset= 0 type= 8
vector<FirstEmbeddedClass> firstvector offset= 0 type=300 ,stl=1, ctype=61, (FirstEmbeddedClass)
StreamerInfo for class: TObject, version=1, checksum=0x52d96731
UInt_t fUniqueID offset= 0 type=13 object unique identifier
UInt_t fBits offset= 0 type=15 bit field status word
StreamerInfo for class: FirstEmbeddedClass, version=1, checksum=0xcf97857f
TObject BASE offset= 0 type=66 Basic ROOT object
double variable1 offset= 0 type= 8
SecondEmbeddedClass secondvector[10] offset= 0 type=81 [10]
StreamerInfo for class: SecondEmbeddedClass, version=1, checksum=0x6d31c85e
TObject BASE offset= 0 type=66 Basic ROOT object
double variable2 offset= 0 type= 8
int variable3 offset= 0 type= 3 When I do MakeClass(), it comments out the SecondEmbeddedClass array.
class test {
public :
TTree *fChain; //!pointer to the analyzed TTree or TChain
Int_t fCurrent; //!current Tree number in a TChain
// Declaration of leaf types
//MainClass *main;
UInt_t fUniqueID;
UInt_t fBits;
Double_t variable0;
Int_t firstvector_;
UInt_t firstvector_fUniqueID[kMaxfirstvector]; //[firstvector_]
UInt_t firstvector_fBits[kMaxfirstvector]; //[firstvector_]
Double_t firstvector_variable1[kMaxfirstvector]; //[firstvector_]
//SecondEmbeddedClass firstvector_secondvector[10][kMaxfirstvector];
// List of branches
TBranch *b_main_fUniqueID; //!
TBranch *b_main_fBits; //!
TBranch *b_main_variable0; //!
TBranch *b_main_firstvector_; //!
TBranch *b_firstvector_fUniqueID; //!
TBranch *b_firstvector_fBits; //!
TBranch *b_firstvector_variable1; //!
test(TTree *tree=0);
virtual ~test();
virtual Int_t Cut(Long64_t entry);
virtual Int_t GetEntry(Long64_t entry);
virtual Long64_t LoadTree(Long64_t entry);
virtual void Init(TTree *tree);
virtual void Loop();
virtual Bool_t Notify();
virtual void Show(Long64_t entry = -1);
};
#endifI noticed if i just declare std::vector secondvector instead of SecondEmbeddedClass secondvector[10], this blank tag and behavior doesn’t occur. The secondvector will not be splite because of “too many variable arrays.” So when I try to circumvent the too many variable arrays with a set size array, this happens. Why is this happening? And how can I get the SecondEmbeddedClass to be split?
I attached the program below.
MyClasses.tar.gz (1.21 KB)