Srs_fetcher Class Reference

#include <srs_fetcher.h>

Public Member Functions
	Srs_fetcher (THD *thd)
bool	acquire (gis::srid_t srid, const dd::Spatial_reference_system **srs)
	Acquire an SRS from the data dictionary. More...
bool	acquire_for_modification (gis::srid_t srid, dd::Spatial_reference_system **srs)
	Acquire an SRS from the data dictionary with the intent of modifying it. More...

Static Public Member Functions
static bool	srs_exists (THD *thd, gis::srid_t srid, bool *exists)

Private Member Functions
bool	lock (gis::srid_t srid, enum_mdl_type lock_type)
	Take an MDL lock on an SRID. More...

Private Attributes
THD *	m_thd

Constructor & Destructor Documentation

Srs_fetcher()

Srs_fetcher::Srs_fetcher ( THD *  thd )

inline

Member Function Documentation

acquire()

bool Srs_fetcher::acquire	(	gis::srid_t	srid,
		const dd::Spatial_reference_system **	srs
	)

Acquire an SRS from the data dictionary.

Take a shared read lock on the SRID.

Parameters

[in]	srid	Spatial reference system ID
[out]	srs	The spatial reference system

Return values

false	Success.
true	Locking failed. An error has already been flagged.

acquire_for_modification()

bool Srs_fetcher::acquire_for_modification	(	gis::srid_t	srid,
		dd::Spatial_reference_system **	srs
	)

Acquire an SRS from the data dictionary with the intent of modifying it.

Take an exclusive lock on the SRID.

Parameters

[in]	srid	Spatial reference system ID
[out]	srs	The spatial reference system

Return values

false	Success.
true	Locking failed. An error has already been flagged.

lock()

bool Srs_fetcher::lock ( gis::srid_t  srid, enum_mdl_type  lock_type  )

private

Take an MDL lock on an SRID.

Parameters

[in]	srid	Spatial reference system ID
[in]	lock_type	Type of lock to take

Return values

false	Success.
true	Locking failed. An error has already been flagged.

srs_exists()

bool Srs_fetcher::srs_exists ( THD *  thd, gis::srid_t  srid, bool *  exists  )

static

Member Data Documentation

m_thd

THD* Srs_fetcher::m_thd

private

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

• sql/srs_fetcher.h
• sql/item_geofunc_internal.cc