Helper class to ease TTree (MUON) branches manipulations. More...

#include <AliMUONTreeManager.h>

Inheritance diagram for AliMUONTreeManager:

Public Member Functions
	AliMUONTreeManager ()

virtual	~AliMUONTreeManager ()

void	AddClassName (TTree &tree, const char pattern, const char className) const

Bool_t	MakeBranch (TTree &tree, const char storeClassName, const char branchClassName, const char branchName, void address, Int_t bufferSize=4000, Int_t splitLevel=99) const

Bool_t	SetAddress (TTree &tree, const char branchName, void address) const

TObject *	CreateObject (const TTree &tree, const char *detail) const

void	UpdateBranchStatuses (TTree &tree, const char *pattern) const

void	GetEvent (TTree &tree, Int_t event) const

void	ShowStatus (TTree &tree) const
	Debug method to show the tree branch statuses and addresses. More...

Private Member Functions
TString	GetClassName (const TTree &tree, const char *pattern, Bool_t makeDefault) const

TString	DefaultClassName (const char treename, const char pattern) const

Detailed Description

Helper class to ease TTree (MUON) branches manipulations.

Helper class to handle the relationships TTree<->MUON data containers

The general way of dealing with I/O for MUON is a two stage process :

1) first get a TTree pointer using the AliLoader mechanism (this is AliRoot general)

2) connect that TTree to a MUON (virtual) data container using the container's Connect(TTree&) method (this is MUON specific)

This class helps implementing stage 2 in the relevant store implementations

See also: AliMUONVStore

Basically, the relationship Tree<->Store is possible because the TreeManager, when creating branches, uses the UserInfo part of the TTree to store the relationship branch -> MUON store classname.

Author: Laurent Aphecetche, Subatech

Definition at line 23 of file AliMUONTreeManager.h.

Constructor & Destructor Documentation

AliMUONTreeManager::AliMUONTreeManager ( )

Default ctor

Definition at line 59 of file AliMUONTreeManager.cxx.

AliMUONTreeManager::~AliMUONTreeManager ( )

virtual

Dtor

Definition at line 65 of file AliMUONTreeManager.cxx.

Member Function Documentation

void AliMUONTreeManager::AddClassName	(	TTree &	tree,
		const char *	pattern,
		const char *	className
	)		const

Adds a association (pattern,className) to the UserInfo() of tree It is mandatory to use this method in MakeBranches(), as this is the key to get an automatic container creation from a tree.

Definition at line 124 of file AliMUONTreeManager.cxx.

Referenced by MakeBranch().

TObject * AliMUONTreeManager::CreateObject	(	const TTree &	tree,
		const char *	detail
	)		const

Object creation from tree, using the (pattern,className) pairs stored in the UserInfo() of TTree.

Definition at line 174 of file AliMUONTreeManager.cxx.

Referenced by AliMUONVStore::Create().

TString AliMUONTreeManager::DefaultClassName	(	const char *	treename,
		const char *	pattern
	)		const

private

For backward compatibility only. Decides, based on the tree name and a pattern, which store class should be used.

Definition at line 260 of file AliMUONTreeManager.cxx.

Referenced by GetClassName().

TString AliMUONTreeManager::GetClassName	(	const TTree &	tree,
		const char *	pattern,
		Bool_t	makeDefault
	)		const

private

Find out, using the TTree::UserInfo, the classname corresponding to pattern. If makeDefault=true and we cannot find the pattern in the UserInfo, we return DefaultClassName(pattern)

Definition at line 227 of file AliMUONTreeManager.cxx.

Referenced by AddClassName(), and CreateObject().

void AliMUONTreeManager::GetEvent	(	TTree &	tree,
		Int_t	event
	)		const

Debug method to get an event, but checking beforehand that all selected branches do have a non-zero address set (otherwise we leak memory).

Equivalent to tree.GetEvent(event) is NDEBUG is not defined, otherwise insure that selected branches have a non-zero address (the contrary indicating we'll get a memory leak when reading the tree).

Definition at line 72 of file AliMUONTreeManager.cxx.

Bool_t AliMUONTreeManager::MakeBranch	(	TTree &	tree,
		const char *	storeClassName,
		const char *	branchClassName,
		const char *	branchName,
		void *	address,
		Int_t	bufferSize = `4000`,
		Int_t	splitLevel = `99`
	)		const

Create a branch in the tree

Definition at line 144 of file AliMUONTreeManager.cxx.

Referenced by AliMUONDigitStoreVImpl::Connect(), AliMUONTriggerTrackStoreV1::Connect(), AliMUONClusterStoreV2::Connect(), AliMUONHitStoreV1::Connect(), AliMUONTrackStoreV1::Connect(), AliMUONDigitStoreV1::Connect(), AliMUONClusterStoreV1::Connect(), and AliMUONTriggerStoreV1::Connect().

Bool_t AliMUONTreeManager::SetAddress	(	TTree &	tree,
		const char *	branchName,
		void *	address
	)		const

Set the address for one branch

Definition at line 158 of file AliMUONTreeManager.cxx.

Referenced by AliMUONDigitStoreVImpl::Connect(), AliMUONTriggerTrackStoreV1::Connect(), AliMUONClusterStoreV2::Connect(), AliMUONHitStoreV1::Connect(), AliMUONTrackStoreV1::Connect(), AliMUONDigitStoreV1::Connect(), AliMUONClusterStoreV1::Connect(), and AliMUONTriggerStoreV1::Connect().

void AliMUONTreeManager::ShowStatus ( TTree & tree ) const

Debug method to show the tree branch statuses and addresses.

Show main branches status and address

Definition at line 107 of file AliMUONTreeManager.cxx.

Referenced by GetEvent().

void AliMUONTreeManager::UpdateBranchStatuses	(	TTree &	tree,
		const char *	pattern
	)		const

Loop over tree branches and set their status if their name matches the pattern :

zero if branch address is null and
one otherwise This will avoid memory leak, if we set the address to only part of the branches before doing a tree.GetEvent(i)

WARNING : this is a time consuming operation, as we loop over branches at least twice (one here, and the TTree::SetBranchStatus is itself a loop). So use only when necessary.

Definition at line 190 of file AliMUONTreeManager.cxx.

Referenced by AliMUONDigitStoreVImpl::Connect(), AliMUONTriggerTrackStoreV1::Connect(), AliMUONClusterStoreV2::Connect(), AliMUONTrackStoreV1::Connect(), AliMUONDigitStoreV1::Connect(), AliMUONClusterStoreV1::Connect(), and AliMUONTriggerStoreV1::Connect().

The documentation for this class was generated from the following files:

MUON/MUONcore/AliMUONTreeManager.h
MUON/MUONcore/AliMUONTreeManager.cxx

Public Member Functions

Private Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation