Hypertable::NameIdMapper Class Reference

Easy mapping between a Table/Namespace name string to ids and vice versa. More...

#include <NameIdMapper.h>

Collaboration diagram for Hypertable::NameIdMapper:

Public Types
enum	Flag { IS_NAMESPACE =0x0001, CREATE_INTERMEDIATE =0x0002 }

Public Member Functions
	NameIdMapper (Hyperspace::SessionPtr &hyperspace, const std::string &toplevel_dir)
bool	name_to_id (const std::string &name, std::string &id, bool *is_namespacep=0)
bool	id_to_name (const std::string &id, std::string &name, bool *is_namespacep=0)
void	id_to_sublisting (const std::string &id, bool include_sub_entries, std::vector< NamespaceListing > &listing)
void	add_mapping (const std::string &name, std::string &id, int flags=0, bool ignore_exists=false)
	Adds a new mapping. More...
void	drop_mapping (const std::string &name)
	Drops a mapping. More...
bool	exists_mapping (const std::string &name, bool *is_namespace)
void	rename (const std::string &old_name, const std::string &new_name)
	Rename one entity, it doesn't recursively rename all entities under the path specified by old_name. More...
void	add_entry (const std::string &names_parent, const std::string &names_entry, std::vector< uint64_t > &ids, bool is_namespace)

Protected Member Functions
bool	do_mapping (const std::string &input, bool id_in, std::string &output, bool *is_namespacep)

Static Protected Member Functions
static void	get_namespace_listing (const std::vector< Hyperspace::DirEntryAttr > &dir_listing, std::vector< NamespaceListing > &listing)

Protected Attributes
std::mutex	m_mutex
Hyperspace::SessionPtr	m_hyperspace
std::string	m_toplevel_dir
std::string	m_names_dir
std::string	m_ids_dir
size_t	m_prefix_components

Detailed Description

Easy mapping between a Table/Namespace name string to ids and vice versa.

Definition at line 45 of file NameIdMapper.h.

Member Enumeration Documentation

enum Hypertable::NameIdMapper::Flag

Enumerator
IS_NAMESPACE
CREATE_INTERMEDIATE

Definition at line 49 of file NameIdMapper.h.

Constructor & Destructor Documentation

Hypertable::NameIdMapper::NameIdMapper	(	Hyperspace::SessionPtr &	hyperspace,
		const std::string &	toplevel_dir
	)

Definition at line 40 of file NameIdMapper.cc.

Member Function Documentation

void Hypertable::NameIdMapper::add_entry	(	const std::string &	names_parent,
		const std::string &	names_entry,
		std::vector< uint64_t > &	ids,
		bool	is_namespace
	)

Definition at line 74 of file NameIdMapper.cc.

void Hypertable::NameIdMapper::add_mapping	(	const std::string &	name,
		std::string &	id,
		int	flags = 0,
		bool	ignore_exists = false
	)

Adds a new mapping.

Parameters

name	name to map
id	output parameter to hold newly mapped ID
flags	control falgs (IS_NAMESPACE and/or CREATE_INTERMEDIATE)
ignore_exists	Don't throw an exception if mapping already exists

Definition at line 146 of file NameIdMapper.cc.

bool Hypertable::NameIdMapper::do_mapping ( const std::string &  input, bool  id_in, std::string &  output, bool *  is_namespacep  )

protected

Definition at line 289 of file NameIdMapper.cc.

void Hypertable::NameIdMapper::drop_mapping

(

const std::string &

name

)

Drops a mapping.

Parameters

name	name to map

Definition at line 254 of file NameIdMapper.cc.

bool Hypertable::NameIdMapper::exists_mapping	(	const std::string &	name,
		bool *	is_namespace
	)

Parameters

name	name to check for mapping
is_namespace	if mapping exists set to true if is namespace

Returns

true if mapping exists, false otherwise

Definition at line 282 of file NameIdMapper.cc.

void Hypertable::NameIdMapper::get_namespace_listing ( const std::vector< Hyperspace::DirEntryAttr > &  dir_listing, std::vector< NamespaceListing > &  listing  )

staticprotected

Definition at line 370 of file NameIdMapper.cc.

bool Hypertable::NameIdMapper::id_to_name	(	const std::string &	id,
		std::string &	name,
		bool *	is_namespacep = 0
	)

Parameters

id	the id of the table/namespace
name	returned name of the table/namespace specified by id
is_namespacep	Set to true if name corresponds to a namespace

Returns

true if mapping exists

Definition at line 69 of file NameIdMapper.cc.

void Hypertable::NameIdMapper::id_to_sublisting	(	const std::string &	id,
		bool	include_sub_entries,
		std::vector< NamespaceListing > &	listing
	)

Parameters

id	the id of the namespace
include_sub_entries	include or not include all sub entries
listing	returned names of the table/namespaces contained within the namespace specified by id

Definition at line 355 of file NameIdMapper.cc.

bool Hypertable::NameIdMapper::name_to_id	(	const std::string &	name,
		std::string &	id,
		bool *	is_namespacep = 0
	)

Parameters

name	name of the table/namespace
id	the returned id of the table/namespace specified by name
is_namespacep	Set to true if name corresponds to a namespace

Returns

true if mapping exists

Definition at line 64 of file NameIdMapper.cc.

void Hypertable::NameIdMapper::rename	(	const std::string &	old_name,
		const std::string &	new_name
	)

Rename one entity, it doesn't recursively rename all entities under the path specified by old_name.

Parameters

old_name	old name
new_name	new name

Definition at line 212 of file NameIdMapper.cc.

Member Data Documentation

Hyperspace::SessionPtr Hypertable::NameIdMapper::m_hyperspace

protected

Definition at line 113 of file NameIdMapper.h.

std::string Hypertable::NameIdMapper::m_ids_dir

protected

Definition at line 116 of file NameIdMapper.h.

std::mutex Hypertable::NameIdMapper::m_mutex

protected

Definition at line 112 of file NameIdMapper.h.

std::string Hypertable::NameIdMapper::m_names_dir

protected

Definition at line 115 of file NameIdMapper.h.

size_t Hypertable::NameIdMapper::m_prefix_components

protected

Definition at line 117 of file NameIdMapper.h.

std::string Hypertable::NameIdMapper::m_toplevel_dir

protected

Definition at line 114 of file NameIdMapper.h.

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

• /home/doug/src/hypertable/src/cc/Hypertable/Lib/NameIdMapper.h
• /home/doug/src/hypertable/src/cc/Hypertable/Lib/NameIdMapper.cc