Changes between Initial Version and Version 1 of OutDated/FrameworkWishList

Timestamp:

Jun 22, 2012, 11:58:31 PM (12 years ago)

Author:

Pavel Demin

Comment:

--

OutDated/FrameworkWishList

@@ +1 @@
+Here is a wish list for a common !FastSim framework: 
+
+1. (optional, lowest priority) ROOT independance
+   (for example, using some classes from CLHEP and Boost.Python for factories, config. file, etc)
+
+2. (optional) config. file independence (specifying only in-memory representation and access methods)
+
+3. Module factory that creates modules instances at runtime '''by name'''
+   
+   With ROOT it's just {{{gROOT->GetClass(moduleClassName)->New()}}}
+
+   http://root.cern.ch/root/html/TClass.html
+   
+   The simplest solution without ROOT would be
+{{{
+  BaseModuleClass* moduleFactory(string const &name)
+  {
+    if(name == "Module1")
+    {
+      return new Module1;
+    }
+    else if(name == "Module2")
+    {
+      return new Module2;
+    }
+    return NULL;
+  }
+}}}
+
+4. Memory manager that minimizes the amount of memory allocations and
+   that creates/destroys/clears all data collections used by other services and modules.
+   It also clears all data collections produce by other services and modules between
+   events in the event loop.  
+   (see ROOT {{{TClonesArray}}}, {{{ExRootFactory}}})
+   
+   http://root.cern.ch/root/html/TClonesArray.html
+
+   https://server06.fynu.ucl.ac.be/projects/ExRootAnalysis/browser/trunk/ExRootAnalysis/ExRootFactory.h
+
+5. Central configuration manager that stores all parameters for all modules and
+   that provides access '''by name''' to these parameters
+   ({{{getDouble(name, defaultValue)}}}, {{{getDouble("JetFinder/MinPT", 10.0)}}})
+
+6. Data manager that provides access '''by name''' to all data collections created by other services and modules
+   (see {{{fwlite::Handle<T>::getByLabel(event, label)}}} in CMSSW or {{{TFolder}}} in ROOT)
+
+   https://twiki.cern.ch/twiki/bin/view/CMSPublic/WorkBookFWLiteEventLoop
+
+   http://cmssdt.cern.ch/SDT/doxygen/CMSSW_5_3_2/doc/html/d1/dd2/classfwlite_1_1Handle.html
+
+   http://root.cern.ch/download/doc/ROOTUsersGuideHTML/ch10.html
+   
+7. Universal object that could represent all physics objects (particles, tracks,
+   calorimeter towers, jets) with possibility to add user defined information
+   (see !FastJet {{{PseudoJet}}} & {{{UserInfoBase}}} classes, CMS PAT {{{UserData}}}, {{{ExRootCandidate}}})
+   
+   With ROOT, user defined information can be implemented quite easily
+{{{
+  class ExRootCandidate
+  {
+  ...
+  private:
+    map< const TClass*, TObject* > fInfoMap
+  };
+  
+   //------------------------------------------------------------------------------
+
+  TObject *ExRootCandidate::GetInfo(const TClass *cl)
+  {
+    map<const TClass *, TObject *>::const_iterator it = fInfoMap.find(cl);
+
+    return (it != fInfoMap.end() ? it->second : 0);
+  }
+
+  //------------------------------------------------------------------------------
+
+  void ExRootCandidate::SetInfo(TObject *info)
+  {
+    fInfoMap[info->IsA()] = info;
+  }
+}}}
+   
+   https://twiki.cern.ch/twiki/bin/view/CMSPublic/SWGuidePATUserData
+   
+   http://fastjet.fr/repo/doxygen-3.0.2/classfastjet_1_1PseudoJet.html
+
+   http://fastjet.fr/repo/doxygen-3.0.2/classfastjet_1_1PseudoJet_1_1UserInfoBase.html
+   
+   https://server06.fynu.ucl.ac.be/projects/ExRootAnalysis/browser/trunk/ExRootAnalysis/ExRootCandidate.h
+
+   http://isscvs.cern.ch/cgi-bin/viewcvs-all.cgi/ORCA/Examples/ExRootAnalysis/UserRootAnalysis.cc?root=orca&view=markup
+
+8. Modules that consume and produce collections of universal objects