MySQL  8.0.28
Source Code Documentation
length_functor.h
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1 #ifndef GIS__LENGTH_FUNCTOR_H_INCLUDED
2 #define GIS__LENGTH_FUNCTOR_H_INCLUDED
3 
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25 
26 /// @file
27 ///
28 /// This file declares the length functor interface.
29 ///
30 /// The functor is not intended for use directly by MySQL code. It should be
31 /// used indirectly through the gis::length() function.
32 ///
33 /// @see gis::length
34 
35 #include <memory> // std::unique_ptr
36 
37 #include <boost/geometry.hpp>
38 #include "sql/gis/functor.h"
39 #include "sql/gis/geometries.h"
40 
41 namespace gis {
42 
43 /// Length functor that calls Boost.Geometry with the correct parameter types.
44 ///
45 /// The functor throws exceptions and is therefore only intended used to
46 /// implement length or other geographic functions. It should not be used
47 /// directly by other MySQL code.
48 class Length : public Unary_functor<double> {
49  private:
50  std::unique_ptr<boost::geometry::strategy::distance::andoyer<
51  boost::geometry::srs::spheroid<double>>>
53 
54  public:
55  Length(double major, double minor);
56  double operator()(const Geometry &g1) const override;
57 
58  double eval(const Geometry &g1) const;
59 
60  double eval(const Geographic_linestring &g1) const;
61  double eval(const Cartesian_linestring &g1) const;
62 
63  double eval(const Geographic_multilinestring &g1) const;
64  double eval(const Cartesian_multilinestring &g1) const;
65 };
66 
67 } // namespace gis
68 
69 #endif // GIS__LENGTH_FUNCTOR_H_INCLUDED
A Cartesian 2d linestring.
Definition: geometries_cs.h:70
A Cartesian 2d multilinestring.
Definition: geometries_cs.h:601
A geographic (ellipsoidal) 2d linestring.
Definition: geometries_cs.h:124
A geographic (ellipsoidal) 2d multilinestring.
Definition: geometries_cs.h:660
Abstract superclass for all geometric objects.
Definition: geometries.h:99
Length functor that calls Boost.Geometry with the correct parameter types.
Definition: length_functor.h:48
std::unique_ptr< boost::geometry::strategy::distance::andoyer< boost::geometry::srs::spheroid< double > > > m_geographic_strategy
Definition: length_functor.h:52
Length(double major, double minor)
Definition: length.cc:45
double eval(const Geometry &g1) const
Definition: length.cc:51
double operator()(const Geometry &g1) const override
Definition: length.cc:49
The base class of all functors that take one geometry argument.
Definition: functor.h:614
This file contains the superclasses for GIS functors.
This file declares the geometry class hierarchy used by the server as the internal representation of ...
Definition: area.cc:46
std::conditional_t< !std::is_array< T >::value, std::unique_ptr< T, detail::Deleter< T > >, std::conditional_t< detail::is_unbounded_array_v< T >, std::unique_ptr< T, detail::Array_deleter< std::remove_extent_t< T > >>, void > > unique_ptr
The following is a common type that is returned by all the ut::make_unique (non-aligned) specializati...
Definition: ut0new.h:2430