* provided "as is" without express or implied warranty. *
**************************************************************************/
-/*
-$Log$
-Revision 1.2 2001/10/04 15:58:52 jchudoba
-Option to open the stream in READ or UPDATE mode
-
-Revision 1.1 2001/09/19 06:20:50 jchudoba
-Class to manage input filenames, used by AliRunDigitizer
-
-*/
+/* $Id$ */
////////////////////////////////////////////////////////////////////////
//
//
////////////////////////////////////////////////////////////////////////
-#include <iostream.h>
+#include <Riostream.h>
#include "TTree.h"
+#include "TROOT.h"
#include "AliStream.h"
-
#include "AliRun.h"
+#include "TObjString.h"
+#include "TArrayI.h"
+#include "TClonesArray.h"
+#include "TFile.h"
+#include "AliLoader.h"
+
ClassImp(AliStream)
-AliStream::AliStream()
+AliStream::AliStream():
+ fLastEventSerialNr(-1),
+ fLastEventNr(0),
+ fCurrentFileIndex(-1),
+ fEvents(0),
+ fMode(0),
+ fFileNames(0x0),
+ fEventFolderName(0)
{
-// default ctor
- fLastEventSerialNr = -1;
- fLastEventNr = 0;
- fCurrentFileIndex = -1;
- fCurrentFile = 0;
- fEvents = 0;
- fFileNames = new TObjArray(1);
- fMode = "READ";
+// root requires default ctor, where no new objects can be created
+// do not use this ctor, it is supplied only for root needs
}
-
-////////////////////////////////////////////////////////////////////////
-AliStream::AliStream(Option_t *option)
+//_______________________________________________________________________
+
+AliStream::AliStream(const char* foldername,Option_t *option):
+ fLastEventSerialNr(-1),
+ fLastEventNr(0),
+ fCurrentFileIndex(-1),
+ fEvents(0),
+ fMode(option),
+ fFileNames(new TObjArray(1)),
+ fEventFolderName(foldername)
{
// ctor
- fLastEventSerialNr = -1;
- fLastEventNr = 0;
- fCurrentFileIndex = -1;
- fCurrentFile = 0;
- fEvents = 0;
- fFileNames = new TObjArray(1);
- fMode = option;
}
+//_______________________________________________________________________
-////////////////////////////////////////////////////////////////////////
AliStream::~AliStream()
{
// default dtor
+ delete AliRunLoader::GetRunLoader(fEventFolderName); //clear the eventuall session
if (fFileNames) delete fFileNames;
}
+//_______________________________________________________________________
-////////////////////////////////////////////////////////////////////////
-void AliStream::AddFile(char *fileName)
+void AliStream::AddFile(const char *fileName)
{
// stores the name of the file
TObjString *name = new TObjString(fileName);
fFileNames->Add(name);
}
+//_______________________________________________________________________
-////////////////////////////////////////////////////////////////////////
-Bool_t AliStream::NextEventInStream(Int_t &serialNr)
+Bool_t AliStream::NextEventInStream()
{
// returns kFALSE if no more events
// returns kTRUE and the serial nr of the next event
// no files given:
if (fFileNames->GetLast() < 0) return kFALSE;
-
- if (!fCurrentFile) {
- if (!OpenNextFile()) return kFALSE;
- }
- if (fLastEventSerialNr+1 >= fEvents) {
+ AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName);
+ if (currentloader == 0x0)
+ {
+ Info("NextEventInStream",
+ "Can not get RL from folder named %s. Attempting to open next file",
+ fEventFolderName.Data());
+ Int_t res = OpenNextFile();
+ if ( res == 0) return kFALSE;
+ currentloader = AliRunLoader::GetRunLoader(fEventFolderName);
+ }
+
+ if (fLastEventSerialNr+1 >= fEvents)
+ {
if (!OpenNextFile()) return kFALSE;
- }
- serialNr = ++fLastEventSerialNr;
+ }
+ Info("NextEventInStream","Trying to get event ",fLastEventSerialNr+1);
+ currentloader->GetEvent(++fLastEventSerialNr);
return kTRUE;
}
+//_______________________________________________________________________
-////////////////////////////////////////////////////////////////////////
void AliStream::ChangeMode(Option_t* option)
// set the mode to READ or UPDATE, reopen file with the new mode
// only change from UPDATE to READ have sense in the current scheme,
// other changes are possible but not usefull
{
+
fMode = option;
- if (fCurrentFile) {
- fCurrentFile->Close();
+ AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName);
+ if (currentloader) {
+ delete currentloader;
fCurrentFileIndex--;
OpenNextFile();
}
}
+//_______________________________________________________________________
-////////////////////////////////////////////////////////////////////////
Bool_t AliStream::OpenNextFile()
{
if (++fCurrentFileIndex > fFileNames->GetLast()) {
return kFALSE;
}
- if (fCurrentFile) {
- if (fCurrentFile->IsOpen()) {
- fCurrentFile->Close();
- }
- }
+ const char* filename = static_cast<TObjString*>(fFileNames->At(fCurrentFileIndex))->GetName();
+
+// check if the file was already opened by some other code
+ TFile *f = (TFile *)(gROOT->GetListOfFiles()->FindObject(filename));
+ if (f) f->Close();
+
+ AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName);
+
+ if (currentloader)
+ {
+ delete currentloader;
+ }
+
+ currentloader = AliRunLoader::Open(filename,fEventFolderName,fMode);
+
- const char * filename =
- static_cast<TObjString*>(fFileNames->At(fCurrentFileIndex))->GetName();
- fCurrentFile = TFile::Open(filename,fMode.Data());
- if (!fCurrentFile) {
+ if (currentloader == 0x0)
+ {
// cannot open file specified on input. Do not skip it silently.
- cerr<<"Cannot open file "<<filename<<endl;
+ cerr<<"Cannot open session "<<filename<<endl;
return kFALSE;
- }
+ }
+
// find nr of events in the given file
- TTree * te = (TTree *) fCurrentFile->Get("TE") ;
- if (!te) {
- Error("OpenNextFile", "input file does not contain TE");
- return kFALSE;
- }
- fEvents = static_cast<Int_t>(te->GetEntries());
+
+ if ( AliLoader::TestFileOption(fMode) )//tests if file is opened in read or update mode
+ {
+ Int_t res = currentloader->LoadHeader();
+ if (res)
+ {
+ Error("OpenNextFile","Problems with loading header");
+ return kFALSE;
+ }
+ fEvents = static_cast<Int_t>(currentloader->TreeE()->GetEntries());
+ }
+ else
+ {
+ //if it is new, create or recreate there is no chance to find header in file
+ fEvents = 0;
+ }
+
fLastEventSerialNr = -1;
return kTRUE;
}
+//_______________________________________________________________________
-////////////////////////////////////////////////////////////////////////
Bool_t AliStream::ImportgAlice()
{
if (fFileNames->GetLast() < 0) return kFALSE;
- if (!fCurrentFile) {
+
+ AliRunLoader* currentloader = AliRunLoader::GetRunLoader(fEventFolderName);
+ if (!currentloader)
+ {
if (!OpenNextFile()) return kFALSE;
- }
- gAlice = (AliRun*)fCurrentFile->Get("gAlice");
+ currentloader = AliRunLoader::GetRunLoader(fEventFolderName);
+ }
+ currentloader->LoadgAlice();
+ gAlice = currentloader->GetAliRun();
if (!gAlice) return kFALSE;
return kTRUE;
}
+
+//_______________________________________________________________________
+TString AliStream::GetFileName(const Int_t order) const
+// returns name of the order-th file
+// returns empty string if such file does not exist
+// first file in the input stream is 0
+{
+ TString fileName("");
+ if (order > fFileNames->GetLast()) return fileName;
+ TObjString *fileNameStored = dynamic_cast<TObjString*>(fFileNames->At(order));
+ if (fileNameStored) fileName = fileNameStored->GetString();
+ return fileName;
+}
+
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff