gis::Functor< T > Class Template Reference

The base class of all functors that takes two geometry arguments. More...

#include <functor.h>

Public Member Functions
virtual T	operator() (const Geometry *g1, const Geometry *g2) const =0
virtual	~Functor ()=default

Static Protected Member Functions
template<typename F >
static T	apply (F &f, const Geometry *g1, const Geometry *g2)

Detailed Description

template<typename T>
class gis::Functor< T >

The base class of all functors that takes two geometry arguments.

Subclasses of this functor base class will implement operator() and call apply() to do type combination dispatching. The actual body of the functor is in the eval() member function, which must be implemented for each different parameter type combination.

The functor may throw exceptions.

Template Parameters

T	The return type of the functor.

Constructor & Destructor Documentation

~Functor()

template<typename T >

virtual gis::Functor< T >::~Functor ( )

virtualdefault

Member Function Documentation

apply()

template<typename T >

template<typename F >

static T gis::Functor< T >::apply ( F &  f, const Geometry *  g1, const Geometry *  g2  )

inlinestaticprotected

operator()()

template<typename T >

virtual T gis::Functor< T >::operator() ( const Geometry *  g1, const Geometry *  g2  ) const

pure virtual

Implemented in gis::Covered_by, gis::Crosses, gis::Difference, gis::Disjoint, gis::Distance, gis::Distance_sphere, gis::Equals, gis::Frechet_distance, gis::Hausdorff_distance, gis::Intersection, gis::Intersects, gis::Overlaps, gis::SymDifference, gis::Touches, gis::Union, and gis::Within.

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

• sql/gis/functor.h