assignment_cpp.cpp

//paste this into a ROOT macro, or the interpreter directly

gSystem.Load("libkds")
KHLAEvent *ehla = KEventFactory::NewHLAEvent()
KAmpEvent *eamp = KEventFactory::NewAmpEvent()

eamp->SetEventTriggerStamp(100)
eamp->AddBolo()
// (class KAmpBolometerRecord*)0x7fbbeacd1ee0

ehla->GetNumBolos()
// (const Int_t)0
ehla->GetEventTriggerStamp()
// (const Long64_t)(-99)

eamp->GetNumBolos()
// (const Int_t)1
eamp->GetEventTriggerStamp()
// (const Long64_t)100


//The assignment operator in C++ figures out these are different types, but inherit from the same base class
//so only the base class members are assigned
*ehla = *eamp


ehla->GetNumBolos()
// (const Int_t)0
ehla->GetEventTriggerStamp()
// (const Long64_t)100


//in ROOT, you can use the Dump method to inspect an object's content

eamp.Dump()
//==> Dumping object at: 0x00007fbbeacf6c50, name=KAmpEvent, class=KAmpEvent
//
//fMuonSystem                   ->7fbbeacf6c70      Muon Veto System Record
//fMuonSystem.fRunNumber        -99                 run number of the Muon Veto system
//fMuonSystem.fMultiADC         -99                 the number of PMTs in the MuVeto system with an ADC value  
//fMuonSystem.fDistanceEst      -99                 laser distance from the East wall to the MuVeto System
//fMuonSystem.fDistanceNemo     -99                 laser distance from the Nemo wall to the MuVeto System
//fMuonSystem.fEventNumber      0                   the event number returned by IRQ. Note, this can be reset in the middle of a run and there are a number of jumps to very high values
//fMuonSystem.fFileNumber       -99                 there are up to 99 files per Run in the MuVeto System
//fMuonSystem.fMultiTDC         -99                 the number of PMTs with a TDC value 
//fMuonSystem.fPcTimeSec        -99                 the time in seconds (presumably since Jan 1, 1970) returned by the DAQ PC
//fMuonSystem.fPcTimeMuSec      -99                 the microseconds elaspsed within the PC time
//fMuonSystem.fCommonStopTime   -99                 the TDC value of the common stop signal for Muon Veto Events. 
//fMuonSystem.fRunStartTime     -99                 start time, in unix time, for the beginning of the current system run
//fMuonSystem.fRunEndTime       -99                 end time, in unix time, for the beginning of the current system run
//fMuonSystem.fFileStartTime    -99                 start time, in unix time, for the beginning of the current "file"
//fMuonSystem.fFileEndTime      -99                 end time, in unix time, for the beginning of the current "file"
//fMuonSystem.fEventQuality     ->7fbbeacf6cc8      || //the Event Quality bits. But don't split them! Otherwise, they won't be accessible from TTree::Draw
//fMuonSystem.fEventQuality.fNbi0s                  Highest bit set + 1
//fMuonSystem.fEventQuality.fNby0es                 Number of UChars in fAllBits
//fMuonSystem.fEventQuality.*fAl->0 s               [fNbytes] array of UChars
//fMuonSystem.fEventQuality.fUni0ueID               object unique identifier
//fMuonSystem.fEventQuality.fBit0x03000000          bit field status word
//fMuonSystem.fSystemOn         false               
//*fSamba                       ->7fbbeacf70d0      ->  an array of samba records
//*fBolo                        ->7fbbeacf7420      -> an array of bolometer records
//*fBoloPulse                   ->7fbbeacf7a40      -> an array of pulse record
//*fMuonModule                  ->7fbbeacf8150      -> an array of muon module records
//*fPulseAna                    ->7fbbeacf8770      -> an array of pulse analysis, each calculated by a different method
//fEventTriggerStamp            100                 the Opera clock value for this event.
//fTriggerType                  1                   0x1 for Bolo event, 0x2 for Muon System, 0x4 if NC counter, 0x8 for next system, etc... 
//fUniqueID                     0                   object unique identifier
//fBits                         0x03000000          bit field status word

ehla.Dump()
//==> Dumping object at: 0x00007fbbeace3d30, name=KHLAEvent, class=KHLAEvent
//
//fMuonSystem                   ->7fbbeace3d50      Muon Veto System Record
//fMuonSystem.fRunNumber        -99                 run number of the Muon Veto system
//fMuonSystem.fMultiADC         -99                 the number of PMTs in the MuVeto system with an ADC value  
//fMuonSystem.fDistanceEst      -99                 laser distance from the East wall to the MuVeto System
//fMuonSystem.fDistanceNemo     -99                 laser distance from the Nemo wall to the MuVeto System
//fMuonSystem.fEventNumber      0                   the event number returned by IRQ. Note, this can be reset in the middle of a run and there are a number of jumps to very high values
//fMuonSystem.fFileNumber       -99                 there are up to 99 files per Run in the MuVeto System
//fMuonSystem.fMultiTDC         -99                 the number of PMTs with a TDC value 
//fMuonSystem.fPcTimeSec        -99                 the time in seconds (presumably since Jan 1, 1970) returned by the DAQ PC
//fMuonSystem.fPcTimeMuSec      -99                 the microseconds elaspsed within the PC time
//fMuonSystem.fCommonStopTime   -99                 the TDC value of the common stop signal for Muon Veto Events. 
//fMuonSystem.fRunStartTime     -99                 start time, in unix time, for the beginning of the current system run
//fMuonSystem.fRunEndTime       -99                 end time, in unix time, for the beginning of the current system run
//fMuonSystem.fFileStartTime    -99                 start time, in unix time, for the beginning of the current "file"
//fMuonSystem.fFileEndTime      -99                 end time, in unix time, for the beginning of the current "file"
//fMuonSystem.fEventQuality     ->7fbbeace3da8      || //the Event Quality bits. But don't split them! Otherwise, they won't be accessible from TTree::Draw
//fMuonSystem.fEventQuality.fNbi0s                  Highest bit set + 1
//fMuonSystem.fEventQuality.fNby0es                 Number of UChars in fAllBits
//fMuonSystem.fEventQuality.*fAl->0 s               [fNbytes] array of UChars
//fMuonSystem.fEventQuality.fUni0ueID               object unique identifier
//fMuonSystem.fEventQuality.fBit0x03000000          bit field status word
//fMuonSystem.fSystemOn         false               
//*fSamba                       ->7fbbeace3c40      ->  pointer to the array of Samba Sub Records
//*fBolo                        ->7fbbeace93b0      ->  pointer to the array of Single Bolo Sub Records
//*fBoloPulse                   ->7fbbeacec090      -> pointer to the array of Bolo Pulse Sub Records
//*fMuonModule                  ->7fbbeacf2670      -> pointer to the array of Muon Module Sub Records
//fRunNumber                    -99                 big Run number. the small run number is found in the Bolometer data record
//fRunStartTime                 -99                 begining of the Big Run 
//fRunEndTime                   -99                 end of the Big Run
//fGSEventNumber                0                   Global Software Event Number. starts from 1 with each new Run
//fEventTriggerStamp            100                 the Opera clock value for this event.
//fTriggerType                  1                   0x1 for Bolo event, 0x2 for Muon System, 0x4 if NC counter, 0x8 for next system, etc... 
//fUniqueID                     0                   object unique identifier
//fBits                         0x03000000          bit field status word

assignment_python.py

import ROOT

ROOT.gSystem.Load('libkds')
eamp = ROOT.KEventFactory.NewAmpEvent()
ehla = ROOT.KEventFactory.NewHLAEvent()

eamp.SetEventTriggerStamp(100) #EventTriggerTimeStamp is a base class member
eamp.AddBolo() #add a bolo amp record

#check contents 
ehla.GetNumBolos()  
# 0
ehla.GetEventTriggerStamp()
# -99L

eamp.GetNumBolos()  
# 1
eamp.GetEventTriggerStamp()  
# 100L


#call the base class assignment operator
ehla.__class__.__base__.__assign__(ehla, eamp)

#re-check contents 
ehla.GetNumBolos()  
# 0
ehla.GetEventTriggerStamp() #base class information was copied
# 100L