LCTypedVector.h

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#ifndef LCTypedVector_h
#define LCTypedVector_h 1

#include <vector>

#include "EVENT/LCObject.h"
#include "EVENT/LCCollection.h"
#include "Exceptions.h"

#include <sstream>
#include <typeinfo>


namespace UTIL{


  template <class T> 
  class LCTypedVector : public  std::vector<T*> {
    
  public:  
    LCTypedVector() = default ;
    LCTypedVector(const LCTypedVector& ) = delete ;
    LCTypedVector& operator=(const LCTypedVector& ) = delete ;
  
    LCTypedVector( EVENT::LCCollection* collection ) : _col( collection) {
      
      this->resize( _col->getNumberOfElements() ) ;
      
      for(int i=0;i<_col->getNumberOfElements();i++ ) {
    
    (*this)[i] = dynamic_cast<T*>( _col->getElementAt(i) ) ;
    
    // check the first element for the proper type
    if( i == 0 && (*this)[i] == 0  ){

      std::stringstream str ;
      str << "LCTypedVector: cannot convert " << _col->getTypeName() << " to " 
          << typeid(T).name()  ;

      throw EVENT::Exception(  str.str().c_str() ) ; 
    }
      }
    }
    
    EVENT::LCCollection* col() { return _col ; }
    
  protected:
    EVENT::LCCollection* _col ;
  } ; 
  
} // namespace
#endif