fwlite::EventSetup Class Reference

#include <EventSetup.h>

Public Member Functions
	EventSetup (TFile *)
bool	exists (const char *iRecordName) const
const Record &	get (const RecordID &) const
std::vector< std::string >	namesOfAvailableRecords () const
RecordID	recordID (const char *iRecordName) const
void	syncTo (const edm::EventID &, const edm::Timestamp &)
virtual	~EventSetup ()

Private Member Functions
	EventSetup (const EventSetup &)
const EventSetup &	operator= (const EventSetup &)

Private Attributes
TFile *	m_file
std::vector< Record * >	m_records
edm::EventID	m_syncedEvent
edm::Timestamp	m_syncedTimestamp

Detailed Description

Definition at line 67 of file EventSetup.h.

Constructor & Destructor Documentation

EventSetup::EventSetup

(

TFile *

iFile

)

Definition at line 38 of file EventSetup.cc.

                                  :
m_file(iFile)
{
}

EventSetup::~EventSetup ( )

virtual

Definition at line 48 of file EventSetup.cc.

References m_records, and record.

{
   for(auto const& record : m_records) {
       delete record;
   }
}

fwlite::EventSetup::EventSetup ( const EventSetup &  )

private

Member Function Documentation

bool EventSetup::exists

(

const char *

iRecordName

)

const

Returns true if a record with the name iRecordName is available in the file

Definition at line 82 of file EventSetup.cc.

References kRecordAuxiliaryBranchName, m_file, getGTfromDQMFile::obj, AlCaHLTBitMon_QueryRunRegistry::string, MainPageGenerator::tree, and fwlite::unformat_mangled_to_type().

Referenced by main().

{
   std::string realName = unformat_mangled_to_type(iRecordName);
   TObject* obj = m_file->Get(realName.c_str());
   if(nullptr == obj) {
      return false;
   }
   TTree* tree = dynamic_cast<TTree*>(obj);
   if(nullptr == tree) {
      return false;
   }
   return nullptr != tree->FindBranch(kRecordAuxiliaryBranchName);
}

const Record & EventSetup::get

(

const RecordID &

iID

)

const

Definition at line 126 of file EventSetup.cc.

References assert(), and m_records.

Referenced by Options.Options::__getitem__(), and main().

{
   assert(iID<m_records.size());
   return *(m_records[iID]);
}

std::vector< std::string > EventSetup::namesOfAvailableRecords

(

)

const

Definition at line 133 of file EventSetup.cc.

References relval_steps::key, relativeConstraints::keys, m_file, GetRecoTauVFromDQM_MC_cff::next, getGTfromDQMFile::obj, and fwlite::unformat_mangled_to_type().

{
   std::vector<std::string> returnValue;
   
   TList* keys = m_file->GetListOfKeys();
   //this is ROOT's recommended way to iterate
   TIter next(keys);
   while(TObject* obj = next() ) {
      TKey* key = static_cast<TKey*> (obj);
      if(0==strcmp(key->GetClassName(),"TTree")) {
         returnValue.push_back(unformat_mangled_to_type(key->GetName()));
      }
   }
   return returnValue;
}

const EventSetup& fwlite::EventSetup::operator= ( const EventSetup &  )

private

RecordID EventSetup::recordID

(

const char *

iRecordName

)

const

Returns the lookup id of the record whose name is iRecordName. The returned id is only valid for the instance of an EventSetup object to which the recordID call was made. If you later create a new EventSetup instance even for the same file the RecordIDs can be different.

Definition at line 97 of file EventSetup.cc.

References Exception, fwlite::format_type_to_mangled(), kRecordAuxiliaryBranchName, m_file, m_records, mergeVDriftHistosByStation::name, getGTfromDQMFile::obj, SiStripGain_Fake_cff::Record, AlCaHLTBitMon_QueryRunRegistry::string, and MainPageGenerator::tree.

Referenced by main().

{
   std::string treeName = format_type_to_mangled(iRecordName);
   TObject* obj = m_file->Get(treeName.c_str());
   if(nullptr == obj) {
      throw cms::Exception("UnknownRecord")<<"The TTree for the record "<<iRecordName<<" does not exist "<<m_file->GetName();
   }
   TTree* tree = dynamic_cast<TTree*>(obj);
   if(nullptr == tree) {
      throw cms::Exception("UnknownRecord")<<"The object corresponding to "<<iRecordName<<" in file "<<m_file->GetName()<<" is not a TTree and therefore is not a Record";   
   }
   if(nullptr == tree->FindBranch(kRecordAuxiliaryBranchName)) {
      throw cms::Exception("UnknownRecord")<<"The TTree corresponding to "<<iRecordName<<" in file "<<m_file->GetName()<<" does not have the proper structure to be a Record";
   }
   //do we already have this Record?
   std::string name(iRecordName);
   for(std::vector<Record*>::const_iterator it = m_records.begin(), itEnd=m_records.end(); it!=itEnd;++it){
      if((*it)->name()==name) {
         return it - m_records.begin();
      }
   }
   
   //Not found so need to make a new one
   Record* rec = new Record(iRecordName, tree);
   m_records.push_back(rec);
   return m_records.size()-1;
}

void EventSetup::syncTo	(	const edm::EventID &	iID,
		const edm::Timestamp &	iTime
	)

Ensures that all Records will access the appropriate data for this instant in time

Definition at line 71 of file EventSetup.cc.

References m_records, and fwlite::Record::syncTo().

Referenced by main().

                                                                   {
   using std::placeholders::_1;
   std::for_each(m_records.begin(),
                 m_records.end(),
                 std::bind(&Record::syncTo,_1,iID,iTime));
}

Member Data Documentation

TFile* fwlite::EventSetup::m_file

mutableprivate

Definition at line 109 of file EventSetup.h.

Referenced by exists(), namesOfAvailableRecords(), and recordID().

std::vector<Record*> fwlite::EventSetup::m_records

mutableprivate

Definition at line 111 of file EventSetup.h.

Referenced by get(), recordID(), syncTo(), and ~EventSetup().

edm::EventID fwlite::EventSetup::m_syncedEvent

private

Definition at line 106 of file EventSetup.h.

edm::Timestamp fwlite::EventSetup::m_syncedTimestamp

private

Definition at line 107 of file EventSetup.h.