Class which "inverts the file". More...

#include <glass_inverter.h>

Collaboration diagram for Inverter:

Classes
class	PostingChanges
	Class for storing the changes in frequencies for a term. More...

Public Member Functions
void	add_posting (Xapian::docid did, const std::string &term, Xapian::doccount wdf)

void	remove_posting (Xapian::docid did, const std::string &term, Xapian::doccount wdf)

void	update_posting (Xapian::docid did, const std::string &term, Xapian::termcount old_wdf, Xapian::termcount new_wdf)

void	set_positionlist (const GlassPositionListTable &position_table, Xapian::docid did, std::string_view tname, const Xapian::TermIterator &term, bool modifying=false)

void	delete_positionlist (Xapian::docid did, std::string_view term)

bool	get_positionlist (Xapian::docid did, std::string_view term, std::string &s) const

bool	has_positions (const GlassPositionListTable &position_table) const

void	clear ()

void	set_doclength (Xapian::docid did, Xapian::termcount doclen, bool add)

void	delete_doclength (Xapian::docid did)

bool	get_doclength (Xapian::docid did, Xapian::termcount &doclen) const

void	flush_doclengths (GlassPostListTable &table)
	Flush document length changes. More...

void	flush_post_list (GlassPostListTable &table, std::string_view term)
	Flush postlist changes for term. More...

void	flush_all_post_lists (GlassPostListTable &table)
	Flush postlist changes for all terms. More...

void	flush_post_lists (GlassPostListTable &table, std::string_view pfx)
	Flush postlist changes for all terms which start with pfx. More...

void	flush (GlassPostListTable &table)
	Flush all postlist table changes. More...

void	flush_pos_lists (GlassPositionListTable &table)
	Flush position changes. More...

bool	get_deltas (std::string_view term, Xapian::termcount &tf_delta, Xapian::termcount &cf_delta) const

Public Attributes
std::map< Xapian::docid, Xapian::termcount >	doclen_changes
	Buffered changes to document lengths. More...

Private Member Functions
void	store_positions (const GlassPositionListTable &position_table, Xapian::docid did, std::string_view tname, const Xapian::VecCOW< Xapian::termpos > &posvec, bool modifying)

void	set_positionlist (Xapian::docid did, std::string_view term, std::string_view s)

Private Attributes
std::map< std::string, PostingChanges, std::less<> >	postlist_changes
	Buffered changes to postlists. More...

int	has_positions_cache = -1
	Cached answer to Inverter::has_positions(). More...

std::map< std::string, std::map< Xapian::docid, std::string >, std::less<> >	pos_changes
	Buffered changes to positional data. More...

Friends
class	GlassPostListTable

Detailed Description

Class which "inverts the file".

Definition at line 49 of file glass_inverter.h.

Member Function Documentation

◆ add_posting()

void Inverter::add_posting	(	Xapian::docid	did,
		const std::string &	term,
		Xapian::doccount	wdf
	)

inline

Definition at line 159 of file glass_inverter.h.

References postlist_changes, and term.

Referenced by GlassWritableDatabase::add_document_(), and GlassWritableDatabase::replace_document().

◆ clear()

void Inverter::clear ( )

inline

Definition at line 208 of file glass_inverter.h.

References doclen_changes, has_positions_cache, pos_changes, and postlist_changes.

Referenced by GlassWritableDatabase::cancel().

◆ delete_doclength()

void Inverter::delete_doclength ( Xapian::docid did )

inline

Definition at line 222 of file glass_inverter.h.

References Assert, DELETED_POSTING, and doclen_changes.

Referenced by GlassWritableDatabase::delete_document().

◆ delete_positionlist()

void Inverter::delete_positionlist	(	Xapian::docid	did,
		std::string_view	term
	)

Definition at line 114 of file glass_inverter.cc.

References term.

Referenced by GlassWritableDatabase::delete_document(), and GlassWritableDatabase::replace_document().

◆ flush()

void Inverter::flush ( GlassPostListTable & table )

Flush all postlist table changes.

Definition at line 218 of file glass_inverter.cc.

Referenced by GlassWritableDatabase::flush_postlist_changes().

◆ flush_all_post_lists()

void Inverter::flush_all_post_lists ( GlassPostListTable & table )

Flush postlist changes for all terms.

Definition at line 178 of file glass_inverter.cc.

References GlassPostListTable::merge_changes().

◆ flush_doclengths()

void Inverter::flush_doclengths ( GlassPostListTable & table )

Flush document length changes.

Definition at line 160 of file glass_inverter.cc.

References GlassPostListTable::merge_doclen_changes().

Referenced by GlassWritableDatabase::open_leaf_post_list().

◆ flush_pos_lists()

void Inverter::flush_pos_lists ( GlassPositionListTable & table )

Flush position changes.

Definition at line 225 of file glass_inverter.cc.

References GlassPositionListTable::delete_positionlist(), GlassPositionListTable::set_positionlist(), and term.

Referenced by GlassWritableDatabase::flush_postlist_changes().

◆ flush_post_list()

void Inverter::flush_post_list	(	GlassPostListTable &	table,
		std::string_view	term
	)

Flush postlist changes for term.

Definition at line 167 of file glass_inverter.cc.

References GlassPostListTable::merge_changes(), and term.

Referenced by GlassWritableDatabase::open_leaf_post_list().

◆ flush_post_lists()

void Inverter::flush_post_lists	(	GlassPostListTable &	table,
		std::string_view	pfx
	)

Flush postlist changes for all terms which start with pfx.

Definition at line 187 of file glass_inverter.cc.

References GlassPostListTable::merge_changes().

Referenced by GlassWritableDatabase::open_allterms().

◆ get_deltas()

bool Inverter::get_deltas	(	std::string_view	term,
		Xapian::termcount &	tf_delta,
		Xapian::termcount &	cf_delta
	)		const

inline

Definition at line 255 of file glass_inverter.h.

References postlist_changes, and term.

Referenced by GlassWritableDatabase::get_freqs().

◆ get_doclength()

bool Inverter::get_doclength	(	Xapian::docid	did,
		Xapian::termcount &	doclen
	)		const

inline

Definition at line 227 of file glass_inverter.h.

References DELETED_POSTING, doclen_changes, rare, and Xapian::Internal::str().

Referenced by GlassWritableDatabase::get_doclength(), and GlassWritableDatabase::get_unique_terms().

◆ get_positionlist()

bool Inverter::get_positionlist	(	Xapian::docid	did,
		std::string_view	term,
		std::string &	s
	)		const

Definition at line 121 of file glass_inverter.cc.

References term.

Referenced by GlassWritableDatabase::open_position_list(), GlassWritableDatabase::positionlist_count(), and GlassWritableDatabase::read_position_list().

◆ has_positions()

bool Inverter::has_positions ( const GlassPositionListTable & position_table ) const

Definition at line 137 of file glass_inverter.cc.

References GlassTable::get_entry_count().

Referenced by GlassWritableDatabase::has_positions().

◆ remove_posting()

void Inverter::remove_posting	(	Xapian::docid	did,
		const std::string &	term,
		Xapian::doccount	wdf
	)

inline

Definition at line 170 of file glass_inverter.h.

References postlist_changes, and term.

Referenced by GlassWritableDatabase::delete_document(), and GlassWritableDatabase::replace_document().

◆ set_doclength()

void Inverter::set_doclength	(	Xapian::docid	did,
		Xapian::termcount	doclen,
		bool	add
	)

inline

Definition at line 215 of file glass_inverter.h.

References GlassTable::add(), Assert, DELETED_POSTING, and doclen_changes.

Referenced by GlassWritableDatabase::add_document_(), and GlassWritableDatabase::replace_document().

◆ set_positionlist() [1/2]

void Inverter::set_positionlist	(	const GlassPositionListTable &	position_table,
		Xapian::docid	did,
		std::string_view	tname,
		const Xapian::TermIterator &	term,
		bool	modifying = `false`
	)

Definition at line 73 of file glass_inverter.cc.

References pos, Xapian::Vec< T, COW, UNIQUEPTR, typename >::push_back(), Xapian::Vec< T, COW, UNIQUEPTR, typename >::reserve(), and term.

◆ set_positionlist() [2/2]

void Inverter::set_positionlist	(	Xapian::docid	did,
		std::string_view	term,
		std::string_view	s
	)

private

Definition at line 104 of file glass_inverter.cc.

References term.

Referenced by GlassWritableDatabase::add_document_(), and GlassWritableDatabase::replace_document().

◆ store_positions()

void Inverter::store_positions	(	const GlassPositionListTable &	position_table,
		Xapian::docid	did,
		std::string_view	tname,
		const Xapian::VecCOW< Xapian::termpos > &	posvec,
		bool	modifying
	)

private

Definition at line 36 of file glass_inverter.cc.

References GlassTable::get_exact_entry(), GlassPositionListTable::make_key(), and GlassPositionListTable::pack().

◆ update_posting()

void Inverter::update_posting	(	Xapian::docid	did,
		const std::string &	term,
		Xapian::termcount	old_wdf,
		Xapian::termcount	new_wdf
	)

inline

Definition at line 181 of file glass_inverter.h.

References postlist_changes, and term.

Referenced by GlassWritableDatabase::replace_document().

Friends And Related Function Documentation

◆ GlassPostListTable

friend class GlassPostListTable

friend

Definition at line 50 of file glass_inverter.h.

Member Data Documentation

◆ doclen_changes

std::map<Xapian::docid, Xapian::termcount> Inverter::doclen_changes

Buffered changes to document lengths.

Definition at line 156 of file glass_inverter.h.

Referenced by clear(), delete_doclength(), get_doclength(), and set_doclength().

◆ has_positions_cache

int Inverter::has_positions_cache = -1

mutableprivate

Cached answer to Inverter::has_positions().

-1: needs calculating 0: false 1: true

Definition at line 137 of file glass_inverter.h.

Referenced by clear().

◆ pos_changes

std::map<std::string, std::map<Xapian::docid, std::string>, std::less<> > Inverter::pos_changes

private

Buffered changes to positional data.

Definition at line 142 of file glass_inverter.h.

Referenced by clear().

◆ postlist_changes

std::map<std::string, PostingChanges, std::less<> > Inverter::postlist_changes

private

Buffered changes to postlists.

Definition at line 129 of file glass_inverter.h.

Referenced by add_posting(), clear(), get_deltas(), remove_posting(), and update_posting().

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

backends/glass/glass_inverter.h
backends/glass/glass_inverter.cc

Classes

Public Member Functions

Public Attributes

Private Member Functions

Private Attributes

Friends

Detailed Description

Member Function Documentation

◆ add_posting()

◆ clear()

◆ delete_doclength()

◆ delete_positionlist()

◆ flush()

◆ flush_all_post_lists()

◆ flush_doclengths()

◆ flush_pos_lists()

◆ flush_post_list()

◆ flush_post_lists()

◆ get_deltas()

◆ get_doclength()

◆ get_positionlist()

◆ has_positions()

◆ remove_posting()

◆ set_doclength()

◆ set_positionlist() [1/2]

◆ set_positionlist() [2/2]

◆ store_positions()

◆ update_posting()

Friends And Related Function Documentation

◆ GlassPostListTable

Member Data Documentation

◆ doclen_changes

◆ has_positions_cache

◆ pos_changes

◆ postlist_changes