[u/mrichter/AliRoot.git] / 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 "AliLog.h"
#include "AliRunLoader.h"


ClassImp(AliTreeLoader)

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

//______________________________________________________________________________
AliTreeLoader::AliTreeLoader(const AliTreeLoader& source):
  AliObjectLoader(source) 
{
  //
  // copy constructor
  //
  AliFatal("Copy constructor not implemented");
}

//______________________________________________________________________________
AliTreeLoader& AliTreeLoader::operator=(const AliTreeLoader& /*source*/) 
{
  //
  // Assignment operator
  //
  AliFatal("Assignment operator not implemented");
  return *this;
}

//______________________________________________________________________________
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"
	32	#include "AliLog.h"
	33	#include "AliRunLoader.h"
	34
	35
	36	ClassImp(AliTreeLoader)
	37
	38	//______________________________________________________________________________
	39	AliTreeLoader::AliTreeLoader(const TString& name, AliDataLoader* dl,Bool_t storeontop):
	40	AliObjectLoader(name,dl,storeontop)
	41	{
	42	//
	43	// Constructor
	44	//
	45	}
	46
	47	//______________________________________________________________________________
	48	AliTreeLoader::AliTreeLoader(const AliTreeLoader& source):
	49	AliObjectLoader(source)
	50	{
	51	//
	52	// copy constructor
	53	//
	54	AliFatal("Copy constructor not implemented");
	55	}
	56
	57	//______________________________________________________________________________
	58	AliTreeLoader& AliTreeLoader::operator=(const AliTreeLoader& /source/)
	59	{
	60	//
	61	// Assignment operator
	62	//
	63	AliFatal("Assignment operator not implemented");
	64	return *this;
65	}
66
67	//______________________________________________________________________________
68	Int_t AliTreeLoader::WriteData(Option_t* opt)
69	{
70	//
71	// Writes data defined by di object
72	// opt might be "OVERWRITE" in case of forcing overwriting
73	//
74	AliDebug(1, Form("Writing %s container for %s data. Option is %s.",
75	GetName(),GetDataLoader()->GetName(),opt));
76
77	TObject *data = Get();
78	if(data == 0x0)
79	{//did not get, nothing to write
80	AliWarning(Form("Tree named %s not found in folder. Nothing to write.",GetName()));
81	return 0;
82	}
83
84	//check if file is opened
85	if (GetDirectory() == 0x0)
86	{
87	//if not try to open
88	GetDataLoader()->SetFileOption("UPDATE");
89	if (GetDataLoader()->OpenFile("UPDATE"))
90	{
91	//oops, can not open the file, give an error message and return error code
92	AliError(Form("Can not open hits file. %s ARE NOT WRITTEN",GetName()));
93	return 1;
94	}
95	}
96
97	if (GetDataLoader()->IsFileWritable() == kFALSE)
98	{
99	AliError(Form("File %s is not writable",GetDataLoader()->GetFileName().Data()));
100	return 2;
101	}
102
103	GetDirectory()->cd(); //set the proper directory active
104
105	//see if hits container already exists in this (root) directory
106	TObject* obj = GetFromDirectory(GetName());
107	if (obj)
108	{ //if they exist, see if option OVERWRITE is used
109	const char *oOverWrite = strstr(opt,"OVERWRITE");
110	if(!oOverWrite)
111	{//if it is not used - give an error message and return an error code
112	AliError("Tree already exisists. Use option \"OVERWRITE\" to overwrite previous data");
113	return 3;
114	}
115	}
116
117	AliDebug(1, Form("DataName = %s, opt = %s, data object name = %s",
118	GetName(),opt,data->GetName()));
119	AliDebug(1, Form("File Name = %s, Directory Name = %s Directory's File Name = %s",
120	GetDataLoader()->GetFile()->GetName(),GetDirectory()->GetName(),
121	GetDirectory()->GetFile()->GetName()));
122
123	//if a data object is a tree set the directory
124	TTree* tree = dynamic_cast<TTree*>(data);
125	if (tree) tree->SetDirectory(GetDirectory()); //forces setting the directory to this directory (we changed dir few lines above)
126
127	AliDebug(1, "Writing tree");
128	data->Write(0,TObject::kOverwrite);
129
130	fIsLoaded = kTRUE; // Just to ensure flag is on. Object can be posted manually to folder structure, not using loader.
131
132	return 0;
133
134	}
135
136	//______________________________________________________________________________
137	void AliTreeLoader::MakeTree()
138	{
139	//
140	// This virtual method creates the tree in the file
141	//
142	if (Tree())
143	{
144	AliDebug(1, Form("name = %s, Data Name = %s Tree already exists.",
145	GetName(),GetDataLoader()->GetName()));
146	return;//tree already made
147	}
148	AliDebug(1, Form("Making Tree named %s.",GetName()));
149
150	TString dtypename(GetDataLoader()->GetName());
151	TTree* tree = new TTree(GetName(), dtypename + " Container"); //make a tree
152	if (tree == 0x0)
153	{
154	AliError(Form("Can not create %s tree.",GetName()));
155	return;
156	}
157	tree->SetAutoSave(1000000000); //no autosave
158	GetFolder()->Add(tree);
159	WriteData("OVERWRITE");//write tree to the file
160	}
161
162