smtk::resource::query::DerivedFrom< SelfType, ParentType > Class Template Reference

Query functors can be registered to Resources as the implementation of a base (and often abstract) Query. More...

#include <DerivedFrom.h>

Inheritance diagram for smtk::resource::query::DerivedFrom< SelfType, ParentType >:

Collaboration diagram for smtk::resource::query::DerivedFrom< SelfType, ParentType >:

Static Public Member Functions
static std::size_t	typeIndex ()

Protected Types
typedef ParentType	Parent

Static Protected Member Functions
static int	numberOfGenerationsFromType (const std::size_t index)
	Return the number of generations from this instance to the type index of a parent, or return a large negative number if the two types are unrelated.

Friends
class	Metadata

Detailed Description

template<typename SelfType, typename ParentType>
class smtk::resource::query::DerivedFrom< SelfType, ParentType >

Query functors can be registered to Resources as the implementation of a base (and often abstract) Query.

The default priority functor for a Query type is related to its hierarchical relationship to the base Query type (the most derived registered class is returned); a different priority functor can be assigned at registration time. CRTP is used to ensure that Query classes all have an associated type_index and to facilitate type walking for the default priority algorithm.

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

• /home/docs/checkouts/readthedocs.org/user_builds/smtk/checkouts/latest/smtk/resource/query/DerivedFrom.h