ArtServicePointer.h File Reference

#include <iostream>
#include "art/Framework/Services/Registry/ServiceHandle.h"

Go to the source code of this file.

Functions
template<class T >
T *	ArtServicePointer ()
template<class T >
T *	GenericArtServicePointer ()

Function Documentation

template<class T >

T * ArtServicePointer

(

)

Definition at line 62 of file ArtServicePointer.h.

                       {
  return GenericArtServicePointer<T>();
}

template<class T >

T* GenericArtServicePointer

(

)

Definition at line 37 of file ArtServicePointer.h.

                              {
  try {
    if ( art::ServiceRegistry::isAvailable<T>() ) {
      return art::ServiceHandle<T>().get();
    }
/*
    art::ServiceRegistry& reg = art::ServiceRegistry::instance();
    if ( ! reg.isAvailable<T>() ) return nullptr;
    return &reg.get<T>();
*/
  } catch(const art::Exception& exc) {
    std::string msg = exc.explain_self();
    if ( msg.find("no ServiceRegistry has been set") != std::string::npos ) {
      std::cout << "WARNING: ArtServicePointer: ServiceRegistry not found. Instantiate with" << std::endl;
      std::cout << "           ArtServiceHelper::load(\"myfcl.fcl\")" << std::endl;
    } else {
      std::cout << "WARNING: Art exception: \n" << msg;
    }
  } catch(...) {
    std::cout << "ERROR: ArtServicePointer: Unexpected exception." << std::endl;
  }
  return nullptr;
}