A Simplified Way of Defining Analysis Trains
	============================================

Introduction:
-------------

    The code in this directory presents a simplified way of defining
    an analysis train.  The idea is that the user defines a class that
    derives from TrainSetup:
    
        #include "TrainSetup.C"
        
        class MyTrain : public TrainSetup
        {
        public:
          MyTrain(const char* name="myTest") : TrainSetup(name) 
          { 
          }
          void CreateTasks(AliAnalysisManager* mgr)
          {
            LoadLibrary("MyAnalysis");
            
            gROOT->Macro("AddTaskMyAnalysis.C");
          }
          const char* ClassName() const { return "MyTrain"; }
        };
        
    which then can be executed using either the program "runTrain":
    
        runTrain --class=MyTrain --name=myTrain --url=URL [OPTIONS]
    
    or the script "RunTrain.C": 
    
        > aliroot
        Root> .L $ALICE_ROOT/PWGLF/FORWARD/trains/RunTrain.C
        Root> RunTrain("myTrain", "MyTrain", URL, OPTIONS)
    
    The execution environment and input is specified in the URL
    string, while general parameters for the job (including the
    task(s)) can be specified in OPTIONS.
    
Code Organization:
-------------------


    TrainSetup		      - Base class
    Helper		      - Base class for URL
        LocalHelper	      - Local analysis URLs
    	ProofHelper	      - Proof URLs
    	    LiteHelper	      - Proof-lite URLs
    	    AAFHelper	      - AAF URLs (no AliEn)
        PluginHelper	      - Base class for URLs
     	    AAFPluginHelper   - AAF URLs (w/AliEn)
    	    GridHelper        - Grid URLs
    Option  		      - Option handling
    AvailableSoftware	      - Find SW on AAF/Grid
    ChainBuilder	      - Build local/lite chain
    OutputUtilities	      - Special output
    ParUtilities	      - PAR utilities
    RunTrain		      - Script to run train
    MyAnalysis		      - Example task
    MyTrain		      - Example train
    QATrain		      - Full QA train example
    CreateFileCollection      - Utility
    trainMain		      - The runTrain utility
    
Local Variables:
  mode: text
End:

LocalWords:  TrainSetup RunTrain MyTrain myTrain PWGLF aliroot url QA
LocalWords:  runTrain AddTaskMyAnalysis AliAnalysisManager gROOT AAF
LocalWords:  CreateTasks LoadLibrary MyAnalysis const ClassName AliEn
LocalWords:  LocalHelper ProofHelper LiteHelper AAFHelper GridHelper
LocalWords:  PluginHelper AAFPluginHelper AvailableSoftware QATrain
LocalWords:  ChainBuilder OutputUtilities ParUtilities trainMain
LocalWords:  CreateFileCollection