geometry_extraction.h File Reference

This file contains a few convenience functions for working with Geometries, to avoid boilerplate and mishandling of Geometries. More...

#include "my_sys.h"
#include "sql/dd/cache/dictionary_client.h"
#include "sql/gis/geometries.h"
#include "sql/sql_class.h"
#include <algorithm>
#include <memory>

Go to the source code of this file.

Classes
class	GeometryExtractionResult
	Type used to handle both the result of the decoding of a geometry and the geometry in the case of success. More...

Enumerations
enum class	ResultType { Error , NullValue , Value }
	Type used to differentiate the three cases that can happen when parsing a geometry. More...

Functions
template<typename FieldOrItem >
GeometryExtractionResult	ExtractGeometry (FieldOrItem *fieldOrItem, THD *thd, const char *func_name)
	ExtractGeometry takes an Item or a Field, attempts to parse a geometry out of it and returns a value combining the result of the parsing process with the geometry in case it is a success. More...

Detailed Description

This file contains a few convenience functions for working with Geometries, to avoid boilerplate and mishandling of Geometries.

Enumeration Type Documentation

ResultType

enum class ResultType

strong

Type used to differentiate the three cases that can happen when parsing a geometry.

Enumerator
Error
NullValue
Value

Function Documentation

ExtractGeometry()

template<typename FieldOrItem >

GeometryExtractionResult ExtractGeometry	(	FieldOrItem *	fieldOrItem,
		THD *	thd,
		const char *	func_name
	)

ExtractGeometry takes an Item or a Field, attempts to parse a geometry out of it and returns a value combining the result of the parsing process with the geometry in case it is a success.

Parameters

[in]	fieldOrItem	The Field or Item we want a geometry from.
[in]	thd	THD* to report errors on
[in]	func_name	C-string to report errors as.

Returns

GeometryExtractionResult which holds a result and an optional Geometry