[u/mrichter/AliRoot.git] / STEER / STEER / AliTreeLoader.cxx

/////////////////////////////////////////////////////////////////////////////////////////////
//                                                                                         //
//  class AliTreeLoader                                                                    //
//                                                                                         //
//  Container of all data needed for full                                                  //
//  description of each data type                                                          //
//  (Hits, Kine, ...)                                                                      //
//                                                                                         //
//  Each data loader has a basic standard setup of BaseLoaders                             //
//  which can be identuified by indexes (defined by EStdBasicLoaders)                      //
//  Data managed by these standard base loaders has fixed naming convention                //
//  e.g. - tree with hits is always named TreeH                                            //
//                     (defined in AliLoader::fgkDefaultHitsContainerName)                 //
//       - task DtectorName+Name defined                                                   //
//                                                                                         //
//  EStdBasicLoaders   idx     Object Type        Description                              //
//      kData           0    TTree or TObject     main data itself (hits,digits,...)       //
//      kTask           1        TTask            object producing main data               //
//      kQA             2        TTree                quality assurance tree               //
//      kQATask         3        TTask            task producing QA object                 //
//                                                                                         //
//                                                                                         //
//  User can define and add more basic loaders even Run Time.                              //
//  Caution: in order to save information about added base loader                          //
//  user must rewrite Run Loader to galice.file, overwriting old setup                     //
//                                                                                         //
/////////////////////////////////////////////////////////////////////////////////////////////

/* $Id$ */

#include "AliTreeLoader.h"
#include "AliRunLoader.h"
#include "AliLog.h"

#include <TFile.h>
#include <TFolder.h>

ClassImp(AliTreeLoader)

//______________________________________________________________________________
AliTreeLoader::AliTreeLoader(const TString& name, AliDataLoader* dl,Bool_t storeontop):
 AliObjectLoader(name,dl,storeontop)
{
  //
  // Constructor
  //
}

//______________________________________________________________________________
Int_t AliTreeLoader::WriteData(Option_t* opt)
{
  //
  // Writes data defined by di object
  // opt might be "OVERWRITE" in case of forcing overwriting
  //
  AliDebug(1, Form("Writing %s container for %s data. Option is %s.",
		   GetName(),GetDataLoader()->GetName(),opt));
  
  TObject *data = Get();
  if(data == 0x0)
    {//did not get, nothing to write
      AliWarning(Form("Tree named %s not found in folder. Nothing to write.",GetName()));
      return 0;
    }
  
  //check if file is opened
  if (GetDirectory() == 0x0)
    { 
      //if not try to open
      GetDataLoader()->SetFileOption("UPDATE");
      if (GetDataLoader()->OpenFile("UPDATE"))
	{  
	  //oops, can not open the file, give an error message and return error code
	  AliError(Form("Can not open hits file. %s ARE NOT WRITTEN",GetName()));
	  return 1;
	}
    }
  
  if (GetDataLoader()->IsFileWritable() == kFALSE)
    {
      AliError(Form("File %s is not writable",GetDataLoader()->GetFileName().Data()));
      return 2;
    }
  
  GetDirectory()->cd(); //set the proper directory active
  
  //see if hits container already exists in this (root) directory
  TObject* obj = GetFromDirectory(GetName());
  if (obj)
    { //if they exist, see if option OVERWRITE is used
      const char *oOverWrite = strstr(opt,"OVERWRITE");
      if(!oOverWrite)
	{//if it is not used -  give an error message and return an error code
	  AliError("Tree already exisists. Use option \"OVERWRITE\" to overwrite previous data");
	  return 3;
	}
    }
  
  AliDebug(1, Form("DataName = %s, opt = %s, data object name = %s",
                   GetName(),opt,data->GetName()));
  AliDebug(1, Form("File Name = %s, Directory Name = %s Directory's File Name = %s",
                   GetDataLoader()->GetFile()->GetName(),GetDirectory()->GetName(),
                   GetDirectory()->GetFile()->GetName()));
  
  //if a data object is a tree set the directory
  TTree* tree = dynamic_cast<TTree*>(data);
  if (tree) tree->SetDirectory(GetDirectory()); //forces setting the directory to this directory (we changed dir few lines above)
  
  AliDebug(1, "Writing tree");
  data->Write(0,TObject::kOverwrite);
  
  fIsLoaded = kTRUE;  // Just to ensure flag is on. Object can be posted manually to folder structure, not using loader.
  
  return 0;
  
}

//______________________________________________________________________________
void AliTreeLoader::MakeTree()
{
  //
  // This virtual method creates the tree in the file
  //
  if (Tree()) 
    {
      AliDebug(1, Form("name = %s, Data Name = %s Tree already exists.",
		       GetName(),GetDataLoader()->GetName()));
      return;//tree already made 
    }
  AliDebug(1, Form("Making Tree named %s.",GetName()));
  
  TString dtypename(GetDataLoader()->GetName());
  TTree* tree = new TTree(GetName(), dtypename + " Container"); //make a tree
  if (tree == 0x0)
    {
      AliError(Form("Can not create %s tree.",GetName()));
      return;
   }
  tree->SetAutoSave(1000000000); //no autosave
  GetFolder()->Add(tree);
  WriteData("OVERWRITE");//write tree to the file
}
Commit	Line	Data
a9bbb414	1	/////////////////////////////////////////////////////////////////////////////////////////////
	2	// //
	3	// class AliTreeLoader //
	4	// //
	5	// Container of all data needed for full //
	6	// description of each data type //
	7	// (Hits, Kine, ...) //
	8	// //
	9	// Each data loader has a basic standard setup of BaseLoaders //
	10	// which can be identuified by indexes (defined by EStdBasicLoaders) //
	11	// Data managed by these standard base loaders has fixed naming convention //
	12	// e.g. - tree with hits is always named TreeH //
	13	// (defined in AliLoader::fgkDefaultHitsContainerName) //
	14	// - task DtectorName+Name defined //
	15	// //
	16	// EStdBasicLoaders idx Object Type Description //
	17	// kData 0 TTree or TObject main data itself (hits,digits,...) //
	18	// kTask 1 TTask object producing main data //
	19	// kQA 2 TTree quality assurance tree //
	20	// kQATask 3 TTask task producing QA object //
	21	// //
	22	// //
	23	// User can define and add more basic loaders even Run Time. //
	24	// Caution: in order to save information about added base loader //
	25	// user must rewrite Run Loader to galice.file, overwriting old setup //
	26	// //
	27	/////////////////////////////////////////////////////////////////////////////////////////////
	28
	29	/* $Id$ */
	30
	31	#include "AliTreeLoader.h"
a9bbb414	32	#include "AliRunLoader.h"
c93255fe	33	#include "AliLog.h"
a9bbb414	34
c93255fe	35	#include <TFile.h>
c93255fe	36	#include <TFolder.h>
a9bbb414	37
	38	ClassImp(AliTreeLoader)
	39
	40	//______________________________________________________________________________
	41	AliTreeLoader::AliTreeLoader(const TString& name, AliDataLoader* dl,Bool_t storeontop):
	42	AliObjectLoader(name,dl,storeontop)
	43	{
	44	//
	45	// Constructor
	46	//
	47	}
	48
a9bbb414	49	//______________________________________________________________________________
	50	Int_t AliTreeLoader::WriteData(Option_t* opt)
	51	{
	52	//
	53	// Writes data defined by di object
	54	// opt might be "OVERWRITE" in case of forcing overwriting
	55	//
	56	AliDebug(1, Form("Writing %s container for %s data. Option is %s.",
	57	GetName(),GetDataLoader()->GetName(),opt));
	58
	59	TObject *data = Get();
	60	if(data == 0x0)
	61	{//did not get, nothing to write
	62	AliWarning(Form("Tree named %s not found in folder. Nothing to write.",GetName()));
	63	return 0;
	64	}
	65
	66	//check if file is opened
	67	if (GetDirectory() == 0x0)
	68	{
	69	//if not try to open
	70	GetDataLoader()->SetFileOption("UPDATE");
	71	if (GetDataLoader()->OpenFile("UPDATE"))
	72	{
	73	//oops, can not open the file, give an error message and return error code
	74	AliError(Form("Can not open hits file. %s ARE NOT WRITTEN",GetName()));
	75	return 1;
	76	}
	77	}
	78
	79	if (GetDataLoader()->IsFileWritable() == kFALSE)
	80	{
	81	AliError(Form("File %s is not writable",GetDataLoader()->GetFileName().Data()));
	82	return 2;
	83	}
	84
	85	GetDirectory()->cd(); //set the proper directory active
	86
	87	//see if hits container already exists in this (root) directory
	88	TObject* obj = GetFromDirectory(GetName());
	89	if (obj)
	90	{ //if they exist, see if option OVERWRITE is used
	91	const char *oOverWrite = strstr(opt,"OVERWRITE");
	92	if(!oOverWrite)
	93	{//if it is not used - give an error message and return an error code
	94	AliError("Tree already exisists. Use option \"OVERWRITE\" to overwrite previous data");
	95	return 3;
	96	}
	97	}
	98
	99	AliDebug(1, Form("DataName = %s, opt = %s, data object name = %s",
	100	GetName(),opt,data->GetName()));
	101	AliDebug(1, Form("File Name = %s, Directory Name = %s Directory's File Name = %s",
	102	GetDataLoader()->GetFile()->GetName(),GetDirectory()->GetName(),
	103	GetDirectory()->GetFile()->GetName()));
	104
	105	//if a data object is a tree set the directory
	106	TTree* tree = dynamic_cast<TTree*>(data);
	107	if (tree) tree->SetDirectory(GetDirectory()); //forces setting the directory to this directory (we changed dir few lines above)
	108
	109	AliDebug(1, "Writing tree");
	110	data->Write(0,TObject::kOverwrite);
	111
	112	fIsLoaded = kTRUE; // Just to ensure flag is on. Object can be posted manually to folder structure, not using loader.
113
114	return 0;
115
116	}
117
118	//______________________________________________________________________________
119	void AliTreeLoader::MakeTree()
120	{
121	//
122	// This virtual method creates the tree in the file
123	//
124	if (Tree())
125	{
126	AliDebug(1, Form("name = %s, Data Name = %s Tree already exists.",
127	GetName(),GetDataLoader()->GetName()));
128	return;//tree already made
129	}
130	AliDebug(1, Form("Making Tree named %s.",GetName()));
131
132	TString dtypename(GetDataLoader()->GetName());
133	TTree* tree = new TTree(GetName(), dtypename + " Container"); //make a tree
134	if (tree == 0x0)
135	{
136	AliError(Form("Can not create %s tree.",GetName()));
137	return;
138	}
139	tree->SetAutoSave(1000000000); //no autosave
140	GetFolder()->Add(tree);
141	WriteData("OVERWRITE");//write tree to the file
142	}
143
144