Go4Event
Class TGo4EventElement

Direct Known Subclasses:

TGo4ClonesElement, TGo4CompositeEvent, TGo4MbsEvent, TGo4MbsSubEvent, TGo4SimpleEvent, TGo4SimpleSubEvent, TXXXEvent, TXXXAnlEvent, TXXXUnpackEvent, TMeshB12OutputEvent, TMeshB1InputEvent, TMeshB1OutputEvent, TMeshB2InputEvent, TMeshB2OutputEvent, TMeshB3InputEvent, TMeshB3OutputEvent, TMeshDummyEvent, TMeshFinalEvent, TMeshRawEvent, TYYYRawEvent, TYYYUnpackEvent

class TGo4EventElement

derived from TNamed

The abstract base class for the data elements of which the
unpacked events (or detector structure data, resp) are composed.
Any event structure consists of eventelements that are linked back to
their parent element.
The user event class is the top parent level event element;
unlimited levels of event elements as subevents might be
managed by this user event.
The way of subelement organization (e.g.
user event class members, TObjArray,...) is not restricted here.

Author:

J. Adamczewski

Since: 12/2000

interface

Constructor Summary

TGo4EventElement()

TGo4EventElement(const char * name)

TGo4EventElement(const char * aName, const char * aTitle, Short_t aBaseCat)

Destructor Summary
synchronized	~TGo4EventElement()

Method Summary
void	activate()
Int_t	activateBranch(TBranch* branch, Int_t splitLevel, Int_t init)
Bool_t	CheckEventSource(const char * classname)           Check if event source is valid.
void	Clear(Option_t* t)
void	clearAll(Int_t )
void	deactivate()
Int_t	Fill()           Method called by the event owner (analysis step) to fill the event element from the set event source.
Char_t	GetDataChar(TGo4EventDataIndex* index)           Get char (1 byte) data value by user specified index.
Double_t	GetDataDouble(TGo4EventDataIndex* index)           Get double data value by user specified index.
Float_t	GetDataFloat(TGo4EventDataIndex* index)           Get float data value by user specified index.
Int_t	GetDataInt(TGo4EventDataIndex* index)           Get integer (4 byte) data value by user specified index.
Long_t	GetDataLong(TGo4EventDataIndex* index)           Get long (4 or 8 bytes) integer data value by user specified index.
Short_t	GetDataShort(TGo4EventDataIndex* index)           Get short (2 byte) data value by user specified index.
const TGo4EventSource*	GetEventSource()
Short_t	getId()
const TGo4EventElement*	GetParent()
TGo4CompositeEvent*	getSubEventElement()
Int_t	Init()           Method called on initialization of event classes.
Bool_t	isComposed()
const Bool_t	IsValid()           Returns the valid state of this event.
void	makeBranch(TBranch* parent)
synchronized TGo4EventElement&	operator[](Int_t )
void	PrintEvent()           Method called by the event owner (analysis step) to clear the event element.
void	setDebug(Bool_t debug)
void	SetEventSource(TGo4EventSource* src)           Setter for the event source that is currently used by the Fill method.
void	SetParent(TGo4EventElement* par)           Setter for the parent event structure reference.
void	SetValid(Bool_t on)           Switches the valid state of this event.

Methods inherited from class TNamed

operator=, Clone, Compare, Copy, FillBuffer, GetName, GetTitle, Hash, IsSortable, SetName, SetNameTitle, SetTitle, ls, Print, Sizeof, Class, Class_Name, Class_Version, Dictionary, IsA, ShowMembers, Streamer, StreamerNVirtual, DeclFileName, ImplFileLine, ImplFileName, DeclFileLine

Field Detail

fbIsValid

private Bool_t fbIsValid

Indicates if this event is valid or not. If false, the event store
will not write the event.

protected Bool_t fDebug

protected Short_t fIdentifier

private TGo4EventSource* fxEventSource

The external event source instance which is used to fill this event structure
from the raw event. Lazy initialization as zero; the pointer is set by
analysis only for top level Event Elements with subevents. Might be exchanged
on the fly to switch the unpack of different subevents into the same
event structure.

supplierCardinality 0..1

private TGo4EventElement* fxParent

The higher level event element that owns this instance

supplierCardinality 1

protected Bool_t isActivated

protected Bool_t isComposite

public TGo4EventElement()

public TGo4EventElement(const char * name)

public TGo4EventElement(const char * aName, const char * aTitle, Short_t aBaseCat)

public synchronized ~TGo4EventElement()

public void activate()

public Int_t activateBranch(TBranch* branch, Int_t splitLevel, Int_t init)

public Bool_t CheckEventSource(const char * classname)

Check if event source is valid. Tests the pointer for
zero, and if not zero, compares classname of the
event source with given string. To be used from the
Fill method and from the analysis method init event classes.

public void Clear(Option_t* t)

public void clearAll(Int_t )

public void deactivate()

public Int_t Fill()

Method called by the event owner (analysis step) to fill the
event element from the set event source. Event source can
be the source of the analysis step (if this is a raw event) or the event processor (if this is a reduced event).
Fill method has to specify how the event source writes to the
members of this event structure. Either by calling methods of
the source (like myevent.a=fxEventSource->GetA(); etc ), or by
direct copy to the member (like fxEventSource->FillMemoryAt(&myevent.a);)

public Char_t GetDataChar(TGo4EventDataIndex* index)

Get char (1 byte) data value by user specified index.
Must be re-implemented by subclass to work.

public Double_t GetDataDouble(TGo4EventDataIndex* index)

Get double data value by user specified index.
Must be re-implemented by subclass to work.

public Float_t GetDataFloat(TGo4EventDataIndex* index)

Get float data value by user specified index.
Must be re-implemented by subclass to work.

public Int_t GetDataInt(TGo4EventDataIndex* index)

Get integer (4 byte) data value by user specified index.
Must be re-implemented by subclass to work.

public Long_t GetDataLong(TGo4EventDataIndex* index)

Get long (4 or 8 bytes) integer data value by user specified index.
Must be re-implemented by subclass to work.

public Short_t GetDataShort(TGo4EventDataIndex* index)

Get short (2 byte) data value by user specified index.
Must be re-implemented by subclass to work.

public const TGo4EventSource* GetEventSource()

public Short_t getId()

public const TGo4EventElement* GetParent()

public TGo4CompositeEvent* getSubEventElement()

public Int_t Init()

Method called on initialization of event classes.
User might check the correct type of the eventsource here and assign this
to a subclass pointer.

public Bool_t isComposed()

public const Bool_t IsValid()

Returns the valid state of this event.

public void makeBranch(TBranch* parent)

public synchronized TGo4EventElement& operator[](Int_t )

public void PrintEvent()

Method called by the event owner (analysis step) to clear the
event element.

public void setDebug(Bool_t debug)

public void SetEventSource(TGo4EventSource* src)

Setter for the event source that is currently used by the Fill method.

public void SetParent(TGo4EventElement* par)

Setter for the parent event structure reference.

public void SetValid(Bool_t on)

Switches the valid state of this event.

Association Links

to Class TGo4EventElement

The higher level event element that owns this instance

Supplier Cardinality 1

to Class TGo4EventSource

The external event source instance which is used to fill this event structure
from the raw event. Lazy initialization as zero; the pointer is set by
analysis only for top level Event Elements with subevents. Might be exchanged
on the fly to switch the unpack of different subevents into the same
event structure.

Supplier Cardinality 0..1