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RooProdGenContext.h
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1 /*****************************************************************************
2  * Project: RooFit *
3  * Package: RooFitCore *
4  * File: $Id: RooProdGenContext.h,v 1.15 2007/05/11 09:11:30 verkerke Exp $
5  * Authors: *
6  * WV, Wouter Verkerke, UC Santa Barbara, verkerke@slac.stanford.edu *
7  * DK, David Kirkby, UC Irvine, dkirkby@uci.edu *
8  * *
9  * Copyright (c) 2000-2005, Regents of the University of California *
10  * and Stanford University. All rights reserved. *
11  * *
12  * Redistribution and use in source and binary forms, *
13  * with or without modification, are permitted according to the terms *
14  * listed in LICENSE (http://roofit.sourceforge.net/license.txt) *
15  *****************************************************************************/
16 #ifndef ROO_PROD_GEN_CONTEXT
17 #define ROO_PROD_GEN_CONTEXT
18 
19 #include "RooAbsGenContext.h"
20 #include "RooArgSet.h"
21 
22 class RooProdPdf;
23 class RooDataSet;
24 class RooRealIntegral;
25 class RooAcceptReject;
26 class TRandom;
27 class TIterator;
28 class RooSuperCategory ;
29 
31 public:
32  RooProdGenContext(const RooProdPdf &model, const RooArgSet &vars, const RooDataSet *prototype= 0,
33  const RooArgSet* auxProto=0, Bool_t _verbose= kFALSE);
34  virtual ~RooProdGenContext();
35 
36  virtual void setProtoDataOrder(Int_t* lut) ;
37  virtual void printMultiline(std::ostream &os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const ;
38 
39  virtual void attach(const RooArgSet& params) ;
40 
41 protected:
42 
43  virtual void initGenerator(const RooArgSet &theEvent);
44  virtual void generateEvent(RooArgSet &theEvent, Int_t remaining);
45 
46  void updateCCDTable() ;
47 
48 
49  RooProdGenContext(const RooProdGenContext& other) ;
50 
51  RooArgSet _commonCats ; // Common category dependents
53  RooSuperCategory* _ccdSuper ; // SuperCategory of Common category dependents
57  RooArgSet _uniObs ; // Observable to be generated with flat distribution
58  TIterator* _uniIter ; // Iterator over uniform observables
61  const RooProdPdf *_pdf ; // Original PDF
62  std::list<RooAbsGenContext*> _gcList ; // List of component generator contexts
63  RooArgSet _ownedMultiProds ; // Owned auxilary multi-term product PDFs
64 
65  ClassDef(RooProdGenContext,0) // Context for efficient generation of a a dataset from a RooProdPdf
66 };
67 
68 #endif
const RooProdPdf * _pdf
RooArgSet is a container object that can hold multiple RooAbsArg objects.
Definition: RooArgSet.h:28
RooProdPdf is an efficient implementation of a product of PDFs of the form .
Definition: RooProdPdf.h:31
Basic string class.
Definition: TString.h:131
RooArgSet * _ccdCloneSet
virtual void attach(const RooArgSet &params)
Attach generator to given event buffer.
Iterator abstract base class.
Definition: TIterator.h:30
RooArgSet _ownedMultiProds
virtual void printMultiline(std::ostream &os, Int_t content, Bool_t verbose=kFALSE, TString indent="") const
Detailed printing interface.
RooRealIntegral performs hybrid numerical/analytical integrals of RooAbsReal objects.
#define ClassDef(name, id)
Definition: Rtypes.h:322
virtual ~RooProdGenContext()
Destructor. Delete all owned subgenerator contexts.
This is the base class for the ROOT Random number generators.
Definition: TRandom.h:27
std::list< RooAbsGenContext * > _gcList
RooAbsGenContext is the abstract base class for generator contexts of RooAbsPdf objects.
virtual void setProtoDataOrder(Int_t *lut)
Set the traversal order of the prototype dataset by the given lookup table.
Class RooAcceptReject is a generic toy monte carlo generator implement the accept/reject sampling tec...
static void indent(ostringstream &buf, int indent_level)
RooDataSet is a container class to hold unbinned data.
Definition: RooDataSet.h:33
RooSuperCategory * _ccdSuper
const Bool_t kFALSE
Definition: RtypesCore.h:90
virtual void generateEvent(RooArgSet &theEvent, Int_t remaining)
Generate a single event of the product by generating the components of the products sequentially...
virtual void initGenerator(const RooArgSet &theEvent)
One-time initialization of generator context, forward to component generators.
RooArgSet * _pdfCloneSet
RooProdGenContext(const RooProdPdf &model, const RooArgSet &vars, const RooDataSet *prototype=0, const RooArgSet *auxProto=0, Bool_t _verbose=kFALSE)
RooAbsPdf, the base class of all PDFs
Definition: RooAbsPdf.h:40
RooProdGenContext is an efficient implementation of the generator context specific for RooProdPdf PDF...
RooRealIntegral * _pdfCcdInt
The RooSuperCategory can join several RooAbsCategoryLValue objects into a single category.