Xapian: Internal Source Documentation: ChertValueManager Class Reference

xapian-core 1.4.27

#include <chert_values.h>

Collaboration diagram for ChertValueManager:

Public Member Functions
	ChertValueManager (ChertPostListTable postlist_table_, ChertTermListTable termlist_table_)
	Create a new ChertValueManager object. More...

void	merge_changes ()

void	add_document (Xapian::docid did, const Xapian::Document &doc, std::map< Xapian::valueno, ValueStats > &value_stats)

void	delete_document (Xapian::docid did, std::map< Xapian::valueno, ValueStats > &value_stats)

void	replace_document (Xapian::docid did, const Xapian::Document &doc, std::map< Xapian::valueno, ValueStats > &value_stats)

std::string	get_value (Xapian::docid did, Xapian::valueno slot) const

void	get_all_values (std::map< Xapian::valueno, std::string > &values, Xapian::docid did) const

Xapian::doccount	get_value_freq (Xapian::valueno slot) const

std::string	get_value_lower_bound (Xapian::valueno slot) const

std::string	get_value_upper_bound (Xapian::valueno slot) const

void	set_value_stats (std::map< Xapian::valueno, ValueStats > &value_stats)
	Write the updated statistics to the table. More...

void	reset ()

bool	is_modified () const

void	cancel ()

Private Member Functions
void	add_value (Xapian::docid did, Xapian::valueno slot, const std::string &val)

void	remove_value (Xapian::docid did, Xapian::valueno slot)

Xapian::docid	get_chunk_containing_did (Xapian::valueno slot, Xapian::docid did, std::string &chunk) const

void	get_value_stats (Xapian::valueno slot) const
	Get the statistics for value slot slot. More...

void	get_value_stats (Xapian::valueno slot, ValueStats &stats) const

Private Attributes
Xapian::valueno	mru_slot
	The value number for the most recently used value statistics. More...

ValueStats	mru_valstats
	The most recently used value statistics. More...

ChertPostListTable *	postlist_table

ChertTermListTable *	termlist_table

std::map< Xapian::docid, std::string >	slots

std::map< Xapian::valueno, std::map< Xapian::docid, std::string > >	changes

AutoPtr< ChertCursor >	cursor

Detailed Description

Definition at line 73 of file chert_values.h.

Constructor & Destructor Documentation

◆ ChertValueManager()

ChertValueManager::ChertValueManager	(	ChertPostListTable *	postlist_table_,
		ChertTermListTable *	termlist_table_
	)

inline

Create a new ChertValueManager object.

Definition at line 110 of file chert_values.h.

Member Function Documentation

◆ add_document()

void ChertValueManager::add_document	(	Xapian::docid	did,
		const Xapian::Document &	doc,
		std::map< Xapian::valueno, ValueStats > &	value_stats
	)

Definition at line 353 of file chert_values.cc.

References Assert, ValueStats::freq, Xapian::ValueIterator::get_valueno(), ValueStats::lower_bound, pack_uint(), ValueStats::upper_bound, Xapian::Document::values_begin(), and Xapian::Document::values_end().

Referenced by ChertWritableDatabase::add_document_().

◆ add_value()

void ChertValueManager::add_value	(	Xapian::docid	did,
		Xapian::valueno	slot,
		const std::string &	val
	)

private

Definition at line 132 of file chert_values.cc.

◆ cancel()

void ChertValueManager::cancel ( )

inline

Definition at line 166 of file chert_values.h.

Referenced by ChertDatabase::cancel().

◆ delete_document()

void ChertValueManager::delete_document	(	Xapian::docid	did,
		std::map< Xapian::valueno, ValueStats > &	value_stats
	)

Definition at line 405 of file chert_values.cc.

References Assert, AssertRelParanoid, ValueStats::freq, ValueStats::lower_bound, make_slot_key(), unpack_uint(), and ValueStats::upper_bound.

Referenced by ChertWritableDatabase::delete_document().

◆ get_all_values()

void ChertValueManager::get_all_values	(	std::map< Xapian::valueno, std::string > &	values,
		Xapian::docid	did
	)		const

Definition at line 485 of file chert_values.cc.

References Assert, make_slot_key(), ChertTable::throw_database_closed(), and unpack_uint().

Referenced by ChertDocument::do_get_all_values().

◆ get_chunk_containing_did()

Xapian::docid ChertValueManager::get_chunk_containing_did	(	Xapian::valueno	slot,
		Xapian::docid	did,
		std::string &	chunk
	)		const

private

Definition at line 155 of file chert_values.cc.

References C_unpack_uint_preserving_sort(), LOGCALL, make_valuechunk_key(), RETURN, and unpack_uint().

◆ get_value()

string ChertValueManager::get_value	(	Xapian::docid	did,
		Xapian::valueno	slot
	)		const

Definition at line 462 of file chert_values.cc.

References ValueChunkReader::skip_to().

Referenced by ChertDocument::do_get_value().

◆ get_value_freq()

Xapian::doccount ChertValueManager::get_value_freq ( Xapian::valueno slot ) const

inline

Definition at line 133 of file chert_values.h.

References ValueStats::freq.

Referenced by ChertDatabase::get_value_freq().

◆ get_value_lower_bound()

std::string ChertValueManager::get_value_lower_bound ( Xapian::valueno slot ) const

inline

Definition at line 138 of file chert_values.h.

References ValueStats::lower_bound.

Referenced by ChertDatabase::get_value_lower_bound().

◆ get_value_stats() [1/2]

void ChertValueManager::get_value_stats ( Xapian::valueno slot ) const

private

Get the statistics for value slot slot.

Definition at line 519 of file chert_values.cc.

References Xapian::BAD_VALUENO, and LOGCALL_VOID.

◆ get_value_stats() [2/2]

void ChertValueManager::get_value_stats	(	Xapian::valueno	slot,
		ValueStats &	stats
	)		const

private

Definition at line 529 of file chert_values.cc.

References Assert, Xapian::BAD_VALUENO, ValueStats::clear(), ValueStats::freq, LOGCALL_VOID, ValueStats::lower_bound, make_valuestats_key(), unpack_string(), unpack_uint(), and ValueStats::upper_bound.

◆ get_value_upper_bound()

std::string ChertValueManager::get_value_upper_bound ( Xapian::valueno slot ) const

inline

Definition at line 143 of file chert_values.h.

References ValueStats::upper_bound.

Referenced by ChertDatabase::get_value_upper_bound().

◆ is_modified()

bool ChertValueManager::is_modified ( ) const

inline

Definition at line 162 of file chert_values.h.

Referenced by ChertDatabase::apply(), and ChertWritableDatabase::has_uncommitted_changes().

◆ merge_changes()

void ChertValueManager::merge_changes ( )

Definition at line 321 of file chert_values.cc.

References make_slot_key(), and ValueUpdater::update().

Referenced by ChertWritableDatabase::open_value_list(), and ChertDatabase::set_revision_number().

◆ remove_value()

void ChertValueManager::remove_value	(	Xapian::docid	did,
		Xapian::valueno	slot
	)

private

Definition at line 144 of file chert_values.cc.

◆ replace_document()

void ChertValueManager::replace_document	(	Xapian::docid	did,
		const Xapian::Document &	doc,
		std::map< Xapian::valueno, ValueStats > &	value_stats
	)

Definition at line 449 of file chert_values.cc.

References Xapian::Document::internal.

Referenced by ChertWritableDatabase::replace_document().

◆ reset()

void ChertValueManager::reset ( )

inline

Ignore any old cached valuestats.

Definition at line 157 of file chert_values.h.

References Xapian::BAD_VALUENO.

Referenced by ChertDatabase::open_tables(), and ChertDatabase::open_tables_consistent().

◆ set_value_stats()

void ChertValueManager::set_value_stats ( std::map< Xapian::valueno, ValueStats > & value_stats )

Write the updated statistics to the table.

If the freq member of the statistics for a particular slot is 0, the statistics for that slot will be cleared.

Parameters

value_stats The statistics to set.

Definition at line 570 of file chert_values.cc.

References Xapian::BAD_VALUENO, ValueStats::freq, LOGCALL_VOID, ValueStats::lower_bound, make_valuestats_key(), pack_string(), pack_uint(), and ValueStats::upper_bound.

Referenced by ChertWritableDatabase::apply().

Member Data Documentation

◆ changes

std::map<Xapian::valueno, std::map<Xapian::docid, std::string> > ChertValueManager::changes

private

Definition at line 90 of file chert_values.h.

◆ cursor

AutoPtr<ChertCursor> ChertValueManager::cursor

mutableprivate

Definition at line 92 of file chert_values.h.

◆ mru_slot

Xapian::valueno ChertValueManager::mru_slot

mutableprivate

The value number for the most recently used value statistics.

Set to Xapian::BAD_VALUENO if no value statistics are currently cached.

Definition at line 79 of file chert_values.h.

◆ mru_valstats

ValueStats ChertValueManager::mru_valstats

mutableprivate

The most recently used value statistics.

Definition at line 82 of file chert_values.h.

◆ postlist_table

ChertPostListTable* ChertValueManager::postlist_table

private

Definition at line 84 of file chert_values.h.

◆ slots

std::map<Xapian::docid, std::string> ChertValueManager::slots

private

Definition at line 88 of file chert_values.h.

◆ termlist_table

ChertTermListTable* ChertValueManager::termlist_table

private

Definition at line 86 of file chert_values.h.

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

backends/chert/chert_values.h
backends/chert/chert_values.cc