Converter from std::vector<T,ALLOC> to SG::PackedContainer<U,ALLOC>. More...

Inheritance diagram for DataModelAthenaPool::PackedContainerConverter< T, U, ALLOC >:

Collaboration diagram for DataModelAthenaPool::PackedContainerConverter< T, U, ALLOC >:

Public Member Functions
	PackedContainerConverter (const char tname, const char allocName=nullptr)
	Constructor. More...

virtual void	operator() (TBuffer &b, void *pmember, Int_t size=0)
	Run the streamer. More...

Private Attributes
TClass *	m_cl
	Hold the source class. More...

Detailed Description

template<class T, class U = T, class ALLOC = std::allocator<T>>
class DataModelAthenaPool::PackedContainerConverter< T, U, ALLOC >

Converter from std::vector<T,ALLOC> to SG::PackedContainer<U,ALLOC>.

Definition at line 50 of file PackedContainerConverter.cxx.

Constructor & Destructor Documentation

◆ PackedContainerConverter()

template<class T , class U , class ALLOC >

DataModelAthenaPool::PackedContainerConverter< T, U, ALLOC >::PackedContainerConverter	(	const char *	tname,
		const char *	allocName = `nullptr`
	)

Constructor.

Parameters

tname	The name of the vector element type T.
allocName	The name of the allocator class, or null to assume std::allocator.

Definition at line 86 of file PackedContainerConverter.cxx.

 {
   std::string vname = "vector<";
   vname += tname;
   if (allocName != nullptr) {
     vname += ",";
     vname += allocName;
   }
   if (vname[vname.size()-1] == '>')
     vname += ' ';
   vname += '>';
   m_cl = gROOT->GetClass (vname.c_str());
 }

Member Function Documentation

◆ operator()()

template<class T , class U , class ALLOC >

void DataModelAthenaPool::PackedContainerConverter< T, U, ALLOC >::operator()	(	TBuffer &	b,
		void *	pmember,
		Int_t	size = `0`
	)

virtual

Run the streamer.

Parameters

b	Buffer from which to read.
pmember	Pointer to the object into which to read.
size	Number of instances to read.

Definition at line 109 of file PackedContainerConverter.cxx.

 {
   // This only works for reading!
   assert (b.IsReading());
  
   // The transient object.
   SG::PackedContainer<U, ALLOC>* obj =
     reinterpret_cast<SG::PackedContainer<U, ALLOC>*> (pmember);
  
   // We'll read into this object.
   std::vector<T, ALLOC> tmp;
  
   while (size-- > 0) {
     // Read into tmp and move data to *obj.
     tmp.clear();
     m_cl->Streamer (&tmp, b);
     vectorMove (tmp, *obj);
     ++obj;
   }
 }