//*-- Author : Valeriy Onuchin 11/09/2000 
//
//
////////////////////////////////////////////////////////////////////////////////
//
// rooVArrayRefType corresponds to VArray_Ref_Type Class
//
// The class rooVArrayRefType represents descriptors for object-reference VArray
// types. An instance of this class is called an object-reference-VArray type 
// descriptor.
//
// An instance of this class provides information about a particular 
// object-reference VArray type, called its described type. An object-reference
// VArray type is a variable-size array type whose elements are 
// object-references to instances of a particular persistence-capable referenced
// class.
//
// You should never instantiate this class directly. Instead, you can obtain an
// object-reference-VArray type descriptor either from the module descriptor 
// for the top-level module or from an attribute descriptor for an 
// object-reference VArray attribute. Typically, you obtain an instance by 
// calling the inherited type_of member function of an attribute descriptor.

#include "rooObjy.h"
#include <ooas.h>
#include <oo.h>

ClassImp(rooVArrayRefType)

////////////////////////////////////////////////////////////////////////////////
//______________________________________________________________________________
 rooVArrayRefType::rooVArrayRefType()
{
   // default ctor., for internal use only

   fImp = 0;
}

//______________________________________________________________________________
 rooVArrayRefType::~rooVArrayRefType()
{
   // dtor., for internal use only
   
   fImp = 0; 
}

//______________________________________________________________________________
const rooRefType & rooVArrayRefType::element_ref_type()
{
   // Returns a reference-type descriptor for the object-reference element type.

   if(!fImp) return 0;
   d_Ref_Type& rtp = ((VArray_Ref_Type*)fImp)->element_ref_type();
   if(!rtp) return 0;

   if(!fElementRefType) fElementRefType = new rooRefType((void*)&rtp);      
   fElementRefType->setImp((void*)&rtp);
   return *fElementRefType;
}