edm::HandleExceptionFactory Class Reference

#include "DataFormats/Common/interface/HandleExceptionFactory.h"

Inheritance diagram for edm::HandleExceptionFactory:

Public Member Functions
	HandleExceptionFactory ()
virtual std::shared_ptr< cms::Exception >	make () const =0
virtual	~HandleExceptionFactory ()

Detailed Description

Description: Creates an cms::Exception for an edm::Handle

Usage: When a data product is requested which is not available, the edm::Handle<> will hold an edm::HandleExceptionFactory which is used to manufacture the exception which will be thrown if the Handle is dereferenced. Using a factory over having the cms::Exception already in the Handle is faster for the case where code calls Handle::isValid before dereferencing.

Definition at line 40 of file HandleExceptionFactory.h.

Constructor & Destructor Documentation

edm::HandleExceptionFactory::HandleExceptionFactory

(

)

Definition at line 29 of file HandleExceptionFactory.cc.

{}

edm::HandleExceptionFactory::~HandleExceptionFactory ( )

virtual

Definition at line 36 of file HandleExceptionFactory.cc.

{}

Member Function Documentation

virtual std::shared_ptr<cms::Exception> edm::HandleExceptionFactory::make ( ) const

pure virtual

Implemented in edm::FunctorHandleExceptionFactory< T >.