STreeType Namespace Reference

Namespace holding the constants describing SFrame TTree types. More...

Variables
static const Int_t	InputSimpleTree = 0
	Event-wise TTree that needs no "decoding".
static const Int_t	InputMetaTree = 1
	Metadata TTree that the user has to handle by hand.
static const Int_t	OutputSimpleTree = 100
	Event-wise output TTree.
static const Int_t	OutputMetaTree = 101
	Output TTree that doesn't describe event-level information.

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Detailed Description

Namespace holding the constants describing SFrame TTree types.

SInputData can now describe an arbitrary number of types of TTree-s. This is needed to make it possible for the base SFrame package to be unaware of what extensions other packages (e.g. SFrameARA) add to the base functionality.

While this is not the most elegant solution, I can't just use a C++ enumeration to describe the TTree types, as that wouldn't be extendible either. On the other hand adding a new Int_t constant in one of the extension packages is pretty easy.

Version:

$Revision$

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Variable Documentation

const Int_t STreeType::InputMetaTree = 1 [static]

Metadata TTree that the user has to handle by hand.

This type describes a TTree that does not describe event-level information. For instance ATLAS saves some configuration information into metadata TTree-s in some file formats. The handling of these trees is much more up to the user than for "simple" TTree-s.

Definition at line 51 of file STreeType.h.

Referenced by SCycleBaseNTuple::LoadInputTrees().

const Int_t STreeType::InputSimpleTree = 0 [static]

Event-wise TTree that needs no "decoding".

This constant describes the most common input TTree type. TTree-s that contain one entry per HEP event, are put into this category. SFrame takes care of handling these TTree-s fully.

Definition at line 43 of file STreeType.h.

Referenced by SCycleBaseNTuple::LoadInputTrees().

const Int_t STreeType::OutputMetaTree = 101 [static]

Output TTree that doesn't describe event-level information.

In some cases it's beneficial to write out TTree-s that don't describe one event per entry, but for instance one particle per entry. Since many applications can be imagines, it's up to the user to take care of filling such TTree-s. SFrame only takes care of creating them, and handling them over a PROOF farm.

Definition at line 67 of file STreeType.h.

Referenced by SCycleBaseNTuple::CreateOutputTrees(), and SCycleBaseExec::SlaveBegin().

const Int_t STreeType::OutputSimpleTree = 100 [static]

Event-wise output TTree.

This type describes the most common output TTree type. SFrame takes care of writing one entry to these TTree-s for each accepted event, and provides the user with easy-to-use functions for filling these TTree-s.

Definition at line 59 of file STreeType.h.

Referenced by SCycleBaseNTuple::CreateOutputTrees(), and SCycleBaseExec::SlaveBegin().