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Reference Guide
RooAbsGenContext Class Referenceabstract

RooAbsGenContext is the abstract base class for generator contexts of RooAbsPdf objects.

A generator context is an object that controls the generation of events from a given p.d.f in one or more sessions. This class defines the common interface for all such contexts and organizes storage of common components, such as the observables definition, the prototype data etc..

Definition at line 26 of file RooAbsGenContext.h.

Public Member Functions

 RooAbsGenContext (const RooAbsPdf &model, const RooArgSet &vars, const RooDataSet *prototype=0, const RooArgSet *auxProto=0, Bool_t _verbose=kFALSE)
 Constructor. More...
 
virtual ~RooAbsGenContext ()
 Destructor. More...
 
virtual void attach (const RooArgSet &params)
 Interface to attach given parameters to object in this context. More...
 
virtual Int_t defaultPrintContents (Option_t *opt) const
 Define default contents when printing. More...
 
virtual StyleOption defaultPrintStyle (Option_t *opt) const
 Define default print style. More...
 
virtual RooDataSetgenerate (Double_t nEvents=0, Bool_t skipInit=kFALSE, Bool_t extendedMode=kFALSE)
 Generate the specified number of events with nEvents>0 and and return a dataset containing the generated events. More...
 
virtual void generateEvent (RooArgSet &theEvent, Int_t remaining)=0
 
virtual void initGenerator (const RooArgSet &theEvent)
 Interface function to initialize context for generation for given set of observables. More...
 
Bool_t isValid () const
 
Bool_t isVerbose () const
 
virtual void Print (Option_t *options=0) const
 Print TNamed name and title. More...
 
virtual void printArgs (std::ostream &os) const
 Print arguments of context, i.e. the observables being generated in this context. More...
 
virtual void printClassName (std::ostream &os) const
 Print class name of context. More...
 
virtual void printMultiline (std::ostream &os, Int_t contents, Bool_t verbose=kFALSE, TString indent="") const
 Interface for multi-line printing. More...
 
virtual void printName (std::ostream &os) const
 Print name of context. More...
 
virtual void printTitle (std::ostream &os) const
 Print title of context. More...
 
virtual void setExpectedData (Bool_t)
 
virtual void setProtoDataOrder (Int_t *lut)
 Set the traversal order of prototype data to that in the lookup tables passed as argument. More...
 
void setVerbose (Bool_t verbose=kTRUE)
 
- Public Member Functions inherited from TNamed
 TNamed ()
 
 TNamed (const char *name, const char *title)
 
 TNamed (const TString &name, const TString &title)
 
 TNamed (const TNamed &named)
 TNamed copy ctor. More...
 
virtual ~TNamed ()
 TNamed destructor. More...
 
virtual void Clear (Option_t *option="")
 Set name and title to empty strings (""). More...
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare two TNamed objects. More...
 
virtual void Copy (TObject &named) const
 Copy this to obj. More...
 
virtual void FillBuffer (char *&buffer)
 Encode TNamed into output buffer. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
virtual Bool_t IsSortable () const
 
virtual void ls (Option_t *option="") const
 List TNamed name and title. More...
 
TNamedoperator= (const TNamed &rhs)
 TNamed assignment operator. More...
 
virtual void SetName (const char *name)
 Set the name of the TNamed. More...
 
virtual void SetNameTitle (const char *name, const char *title)
 Set all the TNamed parameters (name and title). More...
 
virtual void SetTitle (const char *title="")
 Set the title of the TNamed. More...
 
virtual Int_t Sizeof () const
 Return size of the TNamed part of the TObject. More...
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
virtual void Browse (TBrowser *b)
 Browse object. May be overridden for another default action. More...
 
ULong_t CheckedHash ()
 Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
virtual void Execute (const char *method, const char *params, Int_t *error=0)
 Execute method on this object with the given parameter string, e.g. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
Bool_t HasInconsistentHash () const
 Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
void InvertBit (UInt_t f)
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
R__ALWAYS_INLINE Bool_t IsOnHeap () const
 
R__ALWAYS_INLINE Bool_t IsZombie () const
 
void MayNotUse (const char *method) const
 Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
void SetBit (UInt_t f)
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
R__ALWAYS_INLINE Bool_t TestBit (UInt_t f) const
 
Int_t TestBits (UInt_t f) const
 
virtual void UseCurrentStyle ()
 Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 
- Public Member Functions inherited from RooPrintable
 RooPrintable ()
 
virtual ~RooPrintable ()
 
virtual void printAddress (std::ostream &os) const
 Print class name of object. More...
 
virtual void printExtras (std::ostream &os) const
 Interface to print extras of object. More...
 
virtual void printStream (std::ostream &os, Int_t contents, StyleOption style, TString indent="") const
 Print description of object on ostream, printing contents set by contents integer, which is interpreted as an OR of 'enum ContentsOptions' values and in the style given by 'enum StyleOption'. More...
 
virtual void printTree (std::ostream &os, TString indent="") const
 Interface for tree structure printing of object. More...
 
virtual void printValue (std::ostream &os) const
 Interface to print value of object. More...
 

Protected Member Functions

virtual RooDataSetcreateDataSet (const char *name, const char *title, const RooArgSet &obs)
 Create an empty dataset to hold the events that will be generated. More...
 
void resampleData (Double_t &ratio)
 Rescale existing output buffer with given ratio. More...
 
- Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
 Interface to ErrorHandler (protected). More...
 
void MakeZombie ()
 

Protected Attributes

UInt_t _expectedEvents
 
RooAbsPdf::ExtendMode _extendMode
 
RooDataSet_genData
 
Bool_t _isValid
 
Int_t _nextProtoIndex
 
TString _normRange
 
Int_t_protoOrder
 
const RooDataSet_prototype
 
RooArgSet _protoVars
 
RooArgSet_theEvent
 
Bool_t _verbose
 
- Protected Attributes inherited from TNamed
TString fName
 
TString fTitle
 

Additional Inherited Members

- Public Types inherited from TObject
enum  {
  kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kInconsistent = 0x08000000,
  kBitMask = 0x00ffffff
}
 
enum  { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }
 
enum  EDeprecatedStatusBits { kObjInCanvas = BIT(3) }
 
enum  EStatusBits {
  kCanDelete = BIT(0), kMustCleanup = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5),
  kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}
 
- Public Types inherited from RooPrintable
enum  ContentsOption {
  kName =1, kClassName =2, kValue =4, kArgs =8,
  kExtras =16, kAddress =32, kTitle =64, kCollectionHeader =128
}
 
enum  StyleOption {
  kInline =1, kSingleLine =2, kStandard =3, kVerbose =4,
  kTreeStructure =5
}
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 
- Static Public Member Functions inherited from RooPrintable
static std::ostream & defaultPrintStream (std::ostream *os=0)
 Return a reference to the current default stream to use in Print(). More...
 
static void nameFieldLength (Int_t newLen)
 Set length of field reserved from printing name of RooAbsArgs in multi-line collection printing to given amount. More...
 
- Static Protected Attributes inherited from RooPrintable
static Int_t _nameLength
 

#include <RooAbsGenContext.h>

Inheritance diagram for RooAbsGenContext:
[legend]

Constructor & Destructor Documentation

◆ RooAbsGenContext()

RooAbsGenContext::RooAbsGenContext ( const RooAbsPdf model,
const RooArgSet vars,
const RooDataSet prototype = 0,
const RooArgSet auxProto = 0,
Bool_t  _verbose = kFALSE 
)

Constructor.

Definition at line 53 of file RooAbsGenContext.cxx.

◆ ~RooAbsGenContext()

RooAbsGenContext::~RooAbsGenContext ( )
virtual

Destructor.

Definition at line 113 of file RooAbsGenContext.cxx.

Member Function Documentation

◆ attach()

void RooAbsGenContext::attach ( const RooArgSet params)
virtual

Interface to attach given parameters to object in this context.

Reimplemented in RooConvGenContext, RooAddGenContext, RooBinnedGenContext, RooProdGenContext, RooGenContext, RooSimGenContext, and RooSimSplitGenContext.

Definition at line 124 of file RooAbsGenContext.cxx.

◆ createDataSet()

RooDataSet * RooAbsGenContext::createDataSet ( const char *  name,
const char *  title,
const RooArgSet obs 
)
protectedvirtual

Create an empty dataset to hold the events that will be generated.

Reimplemented in RooSimSplitGenContext, and RooSimGenContext.

Definition at line 133 of file RooAbsGenContext.cxx.

◆ defaultPrintContents()

Int_t RooAbsGenContext::defaultPrintContents ( Option_t opt) const
virtual

Define default contents when printing.

Reimplemented from RooPrintable.

Definition at line 402 of file RooAbsGenContext.cxx.

◆ defaultPrintStyle()

RooPrintable::StyleOption RooAbsGenContext::defaultPrintStyle ( Option_t opt) const
virtual

Define default print style.

Reimplemented from RooPrintable.

Definition at line 412 of file RooAbsGenContext.cxx.

◆ generate()

RooDataSet * RooAbsGenContext::generate ( Double_t  nEvents = 0,
Bool_t  skipInit = kFALSE,
Bool_t  extendedMode = kFALSE 
)
virtual

Generate the specified number of events with nEvents>0 and and return a dataset containing the generated events.

With nEvents<=0, generate the number of events in the prototype dataset, if available, or else the expected number of events, if non-zero. If extendedMode = true generate according to a Poisson(nEvents) The returned dataset belongs to the caller. Return zero in case of an error. Generation of individual events is delegated to a virtual generateEvent() method. A virtual initGenerator() method is also called just before the first call to generateEvent().

Reimplemented in RooSimSplitGenContext, and RooBinnedGenContext.

Definition at line 152 of file RooAbsGenContext.cxx.

◆ generateEvent()

virtual void RooAbsGenContext::generateEvent ( RooArgSet theEvent,
Int_t  remaining 
)
pure virtual

◆ initGenerator()

void RooAbsGenContext::initGenerator ( const RooArgSet theEvent)
virtual

Interface function to initialize context for generation for given set of observables.

Reimplemented in RooAddGenContext, RooBinnedGenContext, RooConvGenContext, RooProdGenContext, RooSimSplitGenContext, RooGenContext, RooSimGenContext, and RooEffGenContext.

Definition at line 273 of file RooAbsGenContext.cxx.

◆ isValid()

Bool_t RooAbsGenContext::isValid ( ) const
inline

Definition at line 34 of file RooAbsGenContext.h.

◆ isVerbose()

Bool_t RooAbsGenContext::isVerbose ( ) const
inline

Definition at line 43 of file RooAbsGenContext.h.

◆ Print()

virtual void RooAbsGenContext::Print ( Option_t option = 0) const
inlinevirtual

Print TNamed name and title.

Reimplemented from TNamed.

Definition at line 50 of file RooAbsGenContext.h.

◆ printArgs()

void RooAbsGenContext::printArgs ( std::ostream &  os) const
virtual

Print arguments of context, i.e. the observables being generated in this context.

Reimplemented from RooPrintable.

Definition at line 312 of file RooAbsGenContext.cxx.

◆ printClassName()

void RooAbsGenContext::printClassName ( std::ostream &  os) const
virtual

Print class name of context.

Reimplemented from RooPrintable.

Definition at line 302 of file RooAbsGenContext.cxx.

◆ printMultiline()

void RooAbsGenContext::printMultiline ( std::ostream &  os,
Int_t  contents,
Bool_t  verbose = kFALSE,
TString  indent = "" 
) const
virtual

Interface for multi-line printing.

Reimplemented from RooPrintable.

Reimplemented in RooConvGenContext, RooAddGenContext, RooBinnedGenContext, RooProdGenContext, RooGenContext, RooSimGenContext, and RooSimSplitGenContext.

Definition at line 335 of file RooAbsGenContext.cxx.

◆ printName()

void RooAbsGenContext::printName ( std::ostream &  os) const
virtual

Print name of context.

Reimplemented from RooPrintable.

Definition at line 282 of file RooAbsGenContext.cxx.

◆ printTitle()

void RooAbsGenContext::printTitle ( std::ostream &  os) const
virtual

Print title of context.

Reimplemented from RooPrintable.

Definition at line 292 of file RooAbsGenContext.cxx.

◆ resampleData()

void RooAbsGenContext::resampleData ( Double_t ratio)
protected

Rescale existing output buffer with given ratio.

Definition at line 373 of file RooAbsGenContext.cxx.

◆ setExpectedData()

virtual void RooAbsGenContext::setExpectedData ( Bool_t  )
inlinevirtual

Reimplemented in RooBinnedGenContext, and RooSimSplitGenContext.

Definition at line 66 of file RooAbsGenContext.h.

◆ setProtoDataOrder()

void RooAbsGenContext::setProtoDataOrder ( Int_t lut)
virtual

Set the traversal order of prototype data to that in the lookup tables passed as argument.

The LUT must be an array of integers with the same size as the number of entries in the prototype dataset and must contain integer values in the range [0,Nevt-1]

Reimplemented in RooConvGenContext, RooAddGenContext, RooBinnedGenContext, RooProdGenContext, RooSimGenContext, and RooSimSplitGenContext.

Definition at line 348 of file RooAbsGenContext.cxx.

◆ setVerbose()

void RooAbsGenContext::setVerbose ( Bool_t  verbose = kTRUE)
inline

Definition at line 39 of file RooAbsGenContext.h.

Member Data Documentation

◆ _expectedEvents

UInt_t RooAbsGenContext::_expectedEvents
protected

Definition at line 81 of file RooAbsGenContext.h.

◆ _extendMode

RooAbsPdf::ExtendMode RooAbsGenContext::_extendMode
protected

Definition at line 84 of file RooAbsGenContext.h.

◆ _genData

RooDataSet* RooAbsGenContext::_genData
protected

Definition at line 88 of file RooAbsGenContext.h.

◆ _isValid

Bool_t RooAbsGenContext::_isValid
protected

Definition at line 79 of file RooAbsGenContext.h.

◆ _nextProtoIndex

Int_t RooAbsGenContext::_nextProtoIndex
protected

Definition at line 83 of file RooAbsGenContext.h.

◆ _normRange

TString RooAbsGenContext::_normRange
protected

Definition at line 86 of file RooAbsGenContext.h.

◆ _protoOrder

Int_t* RooAbsGenContext::_protoOrder
protected

Definition at line 85 of file RooAbsGenContext.h.

◆ _prototype

const RooDataSet* RooAbsGenContext::_prototype
protected

Definition at line 77 of file RooAbsGenContext.h.

◆ _protoVars

RooArgSet RooAbsGenContext::_protoVars
protected

Definition at line 82 of file RooAbsGenContext.h.

◆ _theEvent

RooArgSet* RooAbsGenContext::_theEvent
protected

Definition at line 78 of file RooAbsGenContext.h.

◆ _verbose

Bool_t RooAbsGenContext::_verbose
protected

Definition at line 80 of file RooAbsGenContext.h.

Libraries for RooAbsGenContext:
[legend]

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