util::details::ArtHandleTracker< T, Event > Class Template Reference

Tracks art handle objects. More...

#include <ArtHandleTrackerManager.h>

Inheritance diagram for util::details::ArtHandleTracker< T, Event >:

Public Member Functions
	ArtHandleTracker (Event const &event, Handle handle)
	Constructor: records all the needed information. More...
Handle const &	handle () const
	Returns the tracked handle. More...
art::Provenance const *	provenance () const
	Returns the provenance information of the handle. More...
Public Member Functions inherited from util::ArtHandleTrackerInterface< Event >
virtual	~ArtHandleTrackerInterface ()=default
	Virtual destructor (does nothing). More...
bool	removeCachedProduct ()
std::any	handlePtr () const
	Returns a container for a pointer to the managed handle. Caveat emptor. More...
std::string	productClass () const
	Returns the name of the class of handled data product. More...
std::type_info const *	productType () const
	Returns the name of the class of handled data product. More...
art::InputTag	inputTag () const
	Returns the tag of handled data product. More...
bool	hasSameDataProduct (util::ArtHandleTrackerInterface< Event > const &other) const
	Returns whether this and the other objects handle the same data product. More...

Private Member Functions
Virtual method implementation
virtual bool	doRemoveCachedProduct () override
	Actually removes the cache. More...
virtual std::any	doHandlePtr () const override
	Returns a pointer to the managed handle, wrapped in std::any. More...
virtual std::string	doProductClass () const override
	Returns the name of the class pointed by the handle. More...
virtual std::type_info const *	doProductType () const override
	Returns the C++ type of the handled data product. More...
virtual art::InputTag	doInputTag () const override

Private Attributes
Event const *	fEvent = nullptr
Handle	fHandle

Additional Inherited Members

Detailed Description

template<typename T, typename Event>
class util::details::ArtHandleTracker< T, Event >

Tracks art handle objects.

Template Parameters

Handle

type of handle being tracked

Note

Due to my limited expertise with metaprogramming (and/or for C++ limitations?) I need one tracker per data type. The util::ArtHandleTrackerManager class should mitigate the hassle deriving from this limitation.

Definition at line 650 of file ArtHandleTrackerManager.h.

Constructor & Destructor Documentation

template<typename T , typename Event >

util::details::ArtHandleTracker< T, Event >::ArtHandleTracker ( Event const &  event, Handle  handle  )

inline

Constructor: records all the needed information.

Definition at line 766 of file ArtHandleTrackerManager.h.

    : fEvent(&event), fHandle(std::move(handle)) {}

Member Function Documentation

template<typename T , typename Event >

virtual std::any util::details::ArtHandleTracker< T, Event >::doHandlePtr ( ) const

inlineoverrideprivatevirtual

Returns a pointer to the managed handle, wrapped in std::any.

Implements util::ArtHandleTrackerInterface< Event >.

Definition at line 744 of file ArtHandleTrackerManager.h.

    { return { &handle() }; }

template<typename T , typename Event >

virtual art::InputTag util::details::ArtHandleTracker< T, Event >::doInputTag ( ) const

inlineoverrideprivatevirtual

Returns the input tag of the handled data product. Deferred implementation of inputTag().

Implements util::ArtHandleTrackerInterface< Event >.

Definition at line 757 of file ArtHandleTrackerManager.h.

    { return inputTagOf(fHandle); }

template<typename T , typename Event >

virtual std::string util::details::ArtHandleTracker< T, Event >::doProductClass ( ) const

inlineoverrideprivatevirtual

Returns the name of the class pointed by the handle.

Implements util::ArtHandleTrackerInterface< Event >.

Definition at line 748 of file ArtHandleTrackerManager.h.

    { return productClassOf(fHandle); }

template<typename T , typename Event >

virtual std::type_info const* util::details::ArtHandleTracker< T, Event >::doProductType ( ) const

inlineoverrideprivatevirtual

Returns the C++ type of the handled data product.

Implements util::ArtHandleTrackerInterface< Event >.

Definition at line 752 of file ArtHandleTrackerManager.h.

    { return ProvenanceGetter<Handle>::productType(); }

template<typename T , typename Event >

virtual bool util::details::ArtHandleTracker< T, Event >::doRemoveCachedProduct ( )

inlineoverrideprivatevirtual

Actually removes the cache.

Implements util::ArtHandleTrackerInterface< Event >.

Definition at line 735 of file ArtHandleTrackerManager.h.

    {
      mf::LogDebug{ "ArtHandleTracker" } << "Removing cache for handle<"
        << fHandle.provenance()->producedClassName()
        << ">(" << fHandle.provenance()->inputTag().encode() << ").";
      return fEvent->removeCachedProduct(fHandle);
    }

template<typename T , typename Event >

Handle const& util::details::ArtHandleTracker< T, Event >::handle ( ) const

inline

Returns the tracked handle.

Definition at line 770 of file ArtHandleTrackerManager.h.

{ return fHandle; }

template<typename T , typename Event >

art::Provenance const* util::details::ArtHandleTracker< T, Event >::provenance ( ) const

inline

Returns the provenance information of the handle.

Definition at line 773 of file ArtHandleTrackerManager.h.

{ return fHandle.provenance(); }

Member Data Documentation

template<typename T , typename Event >

Event const* util::details::ArtHandleTracker< T, Event >::fEvent = nullptr

private

Definition at line 726 of file ArtHandleTrackerManager.h.

template<typename T , typename Event >

Handle util::details::ArtHandleTracker< T, Event >::fHandle

private

Definition at line 728 of file ArtHandleTrackerManager.h.

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The documentation for this class was generated from the following file:

• ArtHandleTrackerManager.h