+ TNamed::Copy(a);
+
+ fSegment->Copy(*((AliTRDsegmentArray &) a).fSegment);
+ fTreeIndex->Copy(*((AliTRDsegmentArray &) a).fTreeIndex);
+ fClass->Copy(*((AliTRDsegmentArray &) a).fClass);
+
+ ((AliTRDsegmentArray &) a).fNSegment = fNSegment;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDsegmentArray::SetClass(const Char_t *classname)
+{
+ //
+ // Sets the classname of the stored object
+ //
+
+ if (fTree != 0) {
+ delete fTree;
+ fTree = 0;
+ fBranch = 0;
+ delete fTreeIndex;
+ fTreeIndex = 0;
+ }
+ if (fSegment != 0) {
+ fSegment->Delete();
+ delete fSegment;
+ fSegment = 0;
+ }
+
+ if (!gROOT) {
+ AliFatal("ROOT system not initialized");
+ exit(1);
+ }
+
+ fClass = gROOT->GetClass(classname);
+ if (!fClass) {
+ AliError(Form("%s is not a valid class name",classname));
+ return kFALSE;
+ }
+ if (!fClass->InheritsFrom(AliTRDsegmentID::Class())) {
+ AliError(Form("%s does not inherit from AliTRDsegmentID",classname));
+ return kFALSE;
+ }
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+AliTRDsegmentID *AliTRDsegmentArray::NewSegment()
+{
+ //
+ // Create a new object according to the class information
+ //
+
+ if (fClass == 0) {
+ return 0;
+ }
+
+ AliTRDsegmentID *segment = (AliTRDsegmentID *) fClass->New();
+
+ if (segment == 0) {
+ return 0;
+ }
+ else {
+ return segment;
+ }
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDsegmentArray::AddSegment(AliTRDsegmentID *segment)
+{
+ //
+ // Add a segment to the array
+ //
+
+ if (segment == 0) {
+ return kFALSE;
+ }
+ if (fSegment == 0) {
+ return kFALSE;
+ }
+ if (fClass == 0) {
+ return kFALSE;
+ }
+
+ if (!(segment->IsA()->InheritsFrom(fClass))) {
+ AliError(Form("added class %s is not of proper type"
+ ,segment->IsA()->GetName()));
+ return kFALSE;
+ }
+
+ fSegment->AddAt(segment,segment->GetID());
+ fNSegment = fSegment->GetLast() + 1;
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+AliTRDsegmentID *AliTRDsegmentArray::AddSegment(Int_t index)
+{
+ //
+ // Add a segment to the array
+ //
+
+ if (fSegment == 0) {
+ return 0;
+ }
+ if (fClass == 0) {
+ return 0;
+ }
+
+ AliTRDsegmentID *segment = NewSegment();
+ if (segment == 0) {
+ return 0;
+ }
+
+ fSegment->AddAt(segment,index);
+ segment->SetID(index);
+ fNSegment = fSegment->GetLast() + 1;
+
+ return segment;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDsegmentArray::MakeArray(Int_t n)
+{
+ //
+ // Create an array of pointers to the segments
+ //
+
+ if (fSegment) {
+ fSegment->Delete();
+ delete fSegment;
+ }
+ if (fTreeIndex) delete fTreeIndex;
+
+ fSegment = new TObjArray(n);
+ fTreeIndex = new AliTRDarrayI();
+ fTreeIndex->Set(n);
+ fNSegment = n;
+ if ((fSegment) && (fTreeIndex)) {
+ return kTRUE;
+ }
+ else {
+ return kFALSE;
+ }
+
+}
+
+//_____________________________________________________________________________
+void AliTRDsegmentArray::ClearSegment(Int_t index)
+{
+ //
+ // Remove a segment from the active memory
+ //
+
+ if (fSegment->At(index)) {
+ fClass->Destructor(fSegment->RemoveAt(index));
+ }
+
+}
+
+//_____________________________________________________________________________
+void AliTRDsegmentArray::MakeTree(char *file)
+{
+ //
+ // Create a tree for the segment
+ //
+
+ AliTRDsegmentID *psegment = NewSegment();
+
+ if (fTree) {
+ delete fTree;
+ }
+
+ fTree = new TTree("Segment Tree","Tree with segments");
+ fBranch = fTree->Branch("Segment",psegment->IsA()->GetName(),&psegment,64000);
+
+ if (file) {
+ fBranch->SetFile(file);
+ }
+
+ delete psegment;
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDsegmentArray::ConnectTree(const char *treeName)
+{
+ //
+ // Connect a tree from current directory
+ //
+
+ if (fTree) {
+ delete fTree;
+ fTree = 0;
+ fBranch = 0;
+ }
+
+ fTree = (TTree *) gDirectory->Get(treeName);
+ if (fTree == 0) {
+ return kFALSE;
+ }
+ fBranch = fTree->GetBranch("Segment");
+ if (fBranch == 0) {
+ return kFALSE;
+ }
+
+ MakeDictionary(TMath::Max(fNSegment,Int_t(fTree->GetEntries())));
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+AliTRDsegmentID *AliTRDsegmentArray::LoadSegment(Int_t index)
+{
+ //
+ // Load a segment with index <index> into the memory
+ //
+
+ if (fTreeIndex == 0) {
+ MakeDictionary(3000);
+ }
+
+ // First try to load dictionary
+ if (fTreeIndex == 0) {
+ return 0;
+ }
+ if (fBranch == 0) {
+ return 0;
+ }
+ if (index > fTreeIndex->fN) {
+ return 0;
+ }
+
+ AliTRDsegmentID *s = (AliTRDsegmentID *) fSegment->At(index);
+ if (s == 0) {
+ s = NewSegment();
+ }
+ s->SetID(index);
+
+ if (s != 0) {
+ Int_t treeIndex = (*fTreeIndex)[index];
+ if (treeIndex < 1) {
+ return 0;
+ }
+ else {
+ treeIndex--;
+ }
+ fBranch->SetAddress(&s);
+ fTree->GetEvent(treeIndex);
+ fSegment->AddAt((TObject*) s, index);
+ }
+ else {
+ return 0;
+ }
+
+ return s;
+
+}
+
+//_____________________________________________________________________________
+AliTRDsegmentID *AliTRDsegmentArray::LoadEntry(Int_t index)
+{
+ //
+ // Load a segment at position <index> in the tree into the memory
+ //
+
+ if (fBranch == 0) {
+ return 0;
+ }
+ if (index > fTree->GetEntries()) {
+ return 0;
+ }
+
+ AliTRDsegmentID *s = NewSegment();
+ if (s) {
+ fBranch->SetAddress(&s);
+ fTree->GetEvent(index);
+ }
+ else {
+ return 0;
+ }
+
+ Int_t nindex = s->GetID();
+ ClearSegment(nindex);
+ fSegment->AddAt((TObject *) s, nindex);
+
+ return s;
+
+}
+
+//_____________________________________________________________________________
+void AliTRDsegmentArray::StoreSegment(Int_t index)
+{
+ //
+ // Make a segment persistent
+ //
+
+ const AliTRDsegmentID *kSegment = (*this)[index];
+ if (kSegment == 0) {
+ return;
+ }
+ if (fTree == 0) {
+ MakeTree();
+ }
+ fBranch->SetAddress(&kSegment);
+ fTree->Fill();
+
+}
+
+//_____________________________________________________________________________
+Bool_t AliTRDsegmentArray::MakeDictionary(Int_t size)
+{
+ //
+ // Create an index table for the tree
+ //
+
+ if (size < 1) {
+ return kFALSE;
+ }
+ if (fTreeIndex) {
+ delete fTreeIndex;
+ }
+
+ fTreeIndex = new AliTRDarrayI();
+ fTreeIndex->Set(size);
+
+ AliTRDsegmentID segment;
+ AliTRDsegmentID *psegment = &segment;
+
+ fBranch->SetAddress(&psegment);
+ TBranch *brindix = fTree->GetBranch("fSegmentID");
+
+ Int_t nevent = (Int_t) fTree->GetEntries();
+ for (Int_t i = 0; i < nevent; i++) {
+ brindix->GetEvent(i);
+ Int_t treeIndex = segment.GetID();
+ if (fTreeIndex->fN < treeIndex) {
+ fTreeIndex->Expand(Int_t (Float_t(treeIndex) * 1.5) + 1);
+ }
+ (*fTreeIndex)[treeIndex] = i + 1;
+ }
+
+ return kTRUE;
+
+}
+
+//_____________________________________________________________________________
+const AliTRDsegmentID * AliTRDsegmentArray::operator[](Int_t i) const
+{
+ //
+ // Returns a segment with the given index <i>
+ //
+
+ if ((i < 0) ||
+ (i >= fNSegment)) {
+ return 0;
+ }
+
+ return (AliTRDsegmentID *) fSegment->At(i);
+
+}
+
+//_____________________________________________________________________________
+const AliTRDsegmentID *AliTRDsegmentArray::At(Int_t i) const
+{
+ //
+ // Returns a segment with the given index <i>
+ //
+
+ if ((i < 0) ||
+ (i >= fNSegment)) {
+ return 0;
+ }
+
+ return (AliTRDsegmentID *) fSegment->At(i);