edm::root::FWLiteDelayedReader Class Reference

Inheritance diagram for edm::root::FWLiteDelayedReader:

Public Member Functions
	FWLiteDelayedReader ()
void	set (std::shared_ptr< ProductRegistry const > iReg)
void	setEntry (Long64_t iEntry)
void	setTree (TTree *iTree)
Public Member Functions inherited from edm::DelayedReader
std::unique_ptr< WrapperBase >	getProduct (BranchKey const &k, EDProductGetter const *ep, ModuleCallingContext const *mcc=nullptr)
void	mergeReaders (DelayedReader *other)
void	reset ()
std::pair< SharedResourcesAcquirer *, std::recursive_mutex * >	sharedResources () const
virtual	~DelayedReader ()

Private Member Functions
virtual std::unique_ptr< WrapperBase >	getProduct_ (BranchKey const &k, EDProductGetter const *ep) override
virtual std::unique_ptr< EventEntryDescription >	getProvenance_ (BranchKey const &) const
std::unique_ptr< WrapperBase >	getTheProduct (BranchKey const &k) const
virtual void	mergeReaders_ (DelayedReader *) override
virtual signalslot::Signal< void(StreamContext const &, ModuleCallingContext const &)> const *	postEventReadFromSourceSignal () const override
virtual signalslot::Signal< void(StreamContext const &, ModuleCallingContext const &)> const *	preEventReadFromSourceSignal () const override
virtual void	reset_ () override
	std::shared_ptr (reg_)

Private Attributes
Long64_t	entry_
TTree *	eventTree_

Detailed Description

Definition at line 63 of file TFWLiteSelectorBasic.cc.

Constructor & Destructor Documentation

edm::root::FWLiteDelayedReader::FWLiteDelayedReader ( )

inline

Definition at line 65 of file TFWLiteSelectorBasic.cc.

: entry_(-1), eventTree_(nullptr), reg_() {}

Member Function Documentation

std::unique_ptr< WrapperBase > edm::root::FWLiteDelayedReader::getProduct_ ( BranchKey const &  k, EDProductGetter const *  ep  )

overrideprivatevirtual

Implements edm::DelayedReader.

Definition at line 91 of file TFWLiteSelectorBasic.cc.

References getTheProduct().

Referenced by set().

                                                                                 {
      return getTheProduct(k);
    }

virtual std::unique_ptr<EventEntryDescription> edm::root::FWLiteDelayedReader::getProvenance_ ( BranchKey const &  ) const

inlineprivatevirtual

Definition at line 72 of file TFWLiteSelectorBasic.cc.

                                                                                          {
        return std::unique_ptr<EventEntryDescription>();
      }

std::unique_ptr< WrapperBase > edm::root::FWLiteDelayedReader::getTheProduct ( BranchKey const &  k ) const

private

Definition at line 96 of file TFWLiteSelectorBasic.cc.

References edm::ObjectWithDict::address(), edm::BranchDescription::branchName(), edm::TypeWithDict::byName(), edm::ObjectWithDict::castObject(), edm::BranchDescription::className(), entry_, eventTree_, Exception, gen::k, parseEventContent::prod, edm::errors::ProductNotFound, AlCaHLTBitMon_QueryRunRegistry::string, and edm::wrappedClassName().

Referenced by getProduct_(), and set().

                                                               {
      ProductRegistry::ProductList::const_iterator itFind= reg_->productList().find(k);
      if(itFind == reg_->productList().end()) {
        throw Exception(errors::ProductNotFound) << "could not find entry for product " << k;
      }
      BranchDescription const& bDesc = itFind->second;

      TBranch* branch= eventTree_->GetBranch(bDesc.branchName().c_str());
      if(nullptr == branch) {
        throw cms::Exception("MissingBranch")
        << "could not find branch named '" << bDesc.branchName() << "'"
        << "\n Perhaps the data being requested was not saved in this file?";
      }
      //find the class type
      std::string const fullName = wrappedClassName(bDesc.className());
      TypeWithDict classType = TypeWithDict::byName(fullName);
      if(!bool(classType)) {
        throw cms::Exception("MissingDictionary")
        << "could not find dictionary for type '" << fullName << "'"
        << "\n Please make sure all the necessary libraries are available.";
      }

      //create an instance of it
      ObjectWithDict wrapperObj = classType.construct();
      if(nullptr == wrapperObj.address()) {
        throw cms::Exception("FailedToCreate") << "could not create an instance of '" << fullName << "'";
      }
      void* address = wrapperObj.address();
      branch->SetAddress(&address);
      ObjectWithDict edProdObj = wrapperObj.castObject(TypeWithDict::byName("edm::WrapperBase"));

      WrapperBase* prod = reinterpret_cast<WrapperBase*>(edProdObj.address());   
         
      if(nullptr == prod) {      
        throw cms::Exception("FailedConversion")     
          << "failed to convert a '" << fullName     
          << "' to a edm::WrapperBase."      
          << "Please contact developers since something is very wrong.";     
      }
      branch->GetEntry(entry_);
      return std::unique_ptr<WrapperBase>(prod);
    }

virtual void edm::root::FWLiteDelayedReader::mergeReaders_ ( DelayedReader *  )

inlineoverrideprivatevirtual

Implements edm::DelayedReader.

Definition at line 75 of file TFWLiteSelectorBasic.cc.

{}

virtual signalslot::Signal<void(StreamContext const&, ModuleCallingContext const&)> const* edm::root::FWLiteDelayedReader::postEventReadFromSourceSignal ( ) const

inlineoverrideprivatevirtual

Implements edm::DelayedReader.

Definition at line 81 of file TFWLiteSelectorBasic.cc.

                                                                                                                                              {
        return nullptr;
      };

virtual signalslot::Signal<void(StreamContext const&, ModuleCallingContext const&)> const* edm::root::FWLiteDelayedReader::preEventReadFromSourceSignal ( ) const

inlineoverrideprivatevirtual

Implements edm::DelayedReader.

Definition at line 78 of file TFWLiteSelectorBasic.cc.

                                                                                                                                             {
        return nullptr;
      }

virtual void edm::root::FWLiteDelayedReader::reset_ ( )

inlineoverrideprivatevirtual

Implements edm::DelayedReader.

Definition at line 76 of file TFWLiteSelectorBasic.cc.

{}

void edm::root::FWLiteDelayedReader::set ( std::shared_ptr< ProductRegistry const >  iReg )

inline

Definition at line 68 of file TFWLiteSelectorBasic.cc.

References getProduct_(), getTheProduct(), and gen::k.

{ reg_ = iReg;}

void edm::root::FWLiteDelayedReader::setEntry ( Long64_t  iEntry )

inline

Definition at line 66 of file TFWLiteSelectorBasic.cc.

References entry_.

{ entry_ = iEntry; }

void edm::root::FWLiteDelayedReader::setTree ( TTree *  iTree )

inline

Definition at line 67 of file TFWLiteSelectorBasic.cc.

References eventTree_.

{eventTree_ = iTree;}

edm::root::FWLiteDelayedReader::std::shared_ptr ( reg_  )

private

Member Data Documentation

Long64_t edm::root::FWLiteDelayedReader::entry_

private

Definition at line 83 of file TFWLiteSelectorBasic.cc.

Referenced by getTheProduct(), and setEntry().

TTree* edm::root::FWLiteDelayedReader::eventTree_

private

Definition at line 86 of file TFWLiteSelectorBasic.cc.

Referenced by getTheProduct(), and setTree().