Inverter Class Reference

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

#include <brass_inverter.h>

Collaboration diagram for Inverter:

[legend]

List of all members.

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	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 (BrassPostListTable &table)
	Flush document length changes.
void	flush_post_list (BrassPostListTable &table, const std::string &term)
	Flush postlist changes for term.
void	flush_all_post_lists (BrassPostListTable &table)
	Flush postlist changes for all terms.
void	flush_post_lists (BrassPostListTable &table, const std::string &pfx)
	Flush postlist changes for all terms which start with pfx.
void	flush (BrassPostListTable &table)
	Flush all changes.
Xapian::termcount_diff	get_tfdelta (const std::string &term) const
Xapian::termcount_diff	get_cfdelta (const std::string &term) const
Public Attributes
std::map< Xapian::docid, Xapian::termcount >	doclen_changes
	Buffered changes to document lengths.
Private Attributes
std::map< std::string, PostingChanges >	postlist_changes
	Buffered changes to postlists.
Friends
class	BrassPostListTable

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Detailed Description

Class which "inverts the file".

Definition at line 39 of file brass_inverter.h.

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Member Function Documentation

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

Definition at line 116 of file brass_inverter.h.

References postlist_changes.

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

void Inverter::clear

(

)

[inline]

Definition at line 153 of file brass_inverter.h.

References doclen_changes, and postlist_changes.

Referenced by BrassWritableDatabase::cancel().

void Inverter::delete_doclength

(

Xapian::docid

did

)

[inline]

Definition at line 165 of file brass_inverter.h.

References Assert, DELETED_POSTING, and doclen_changes.

Referenced by BrassWritableDatabase::delete_document().

void Inverter::flush

(

BrassPostListTable &

table

)

Flush all changes.

Definition at line 81 of file brass_inverter.cc.

References flush_all_post_lists(), and flush_doclengths().

Referenced by BrassWritableDatabase::flush_postlist_changes().

void Inverter::flush_all_post_lists

(

BrassPostListTable &

table

)

Flush postlist changes for all terms.

Definition at line 52 of file brass_inverter.cc.

References BrassPostListTable::merge_changes(), and postlist_changes.

Referenced by flush(), and flush_post_lists().

void Inverter::flush_doclengths

(

BrassPostListTable &

table

)

Flush document length changes.

Definition at line 33 of file brass_inverter.cc.

References doclen_changes, and BrassPostListTable::merge_doclen_changes().

Referenced by flush(), and BrassWritableDatabase::open_post_list().

void Inverter::flush_post_list	(	BrassPostListTable &	table,
		const std::string &	term
	)

Flush postlist changes for term.

Definition at line 40 of file brass_inverter.cc.

References BrassPostListTable::merge_changes(), and postlist_changes.

Referenced by BrassWritableDatabase::open_post_list().

void Inverter::flush_post_lists	(	BrassPostListTable &	table,
		const std::string &	pfx
	)

Flush postlist changes for all terms which start with pfx.

Definition at line 62 of file brass_inverter.cc.

References flush_all_post_lists(), BrassPostListTable::merge_changes(), and postlist_changes.

Referenced by BrassWritableDatabase::open_allterms().

Xapian::termcount_diff Inverter::get_cfdelta

(

const std::string &

term

)

const [inline]

Definition at line 204 of file brass_inverter.h.

References postlist_changes.

Referenced by BrassWritableDatabase::get_collection_freq().

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

Definition at line 170 of file brass_inverter.h.

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

Referenced by BrassWritableDatabase::get_doclength().

Xapian::termcount_diff Inverter::get_tfdelta

(

const std::string &

term

)

const [inline]

Definition at line 196 of file brass_inverter.h.

References postlist_changes.

Referenced by BrassWritableDatabase::get_termfreq().

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

Definition at line 128 of file brass_inverter.h.

References postlist_changes.

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

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

Definition at line 158 of file brass_inverter.h.

References Assert, DELETED_POSTING, and doclen_changes.

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

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

Definition at line 140 of file brass_inverter.h.

References postlist_changes.

Referenced by BrassWritableDatabase::replace_document().

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Friends And Related Function Documentation

friend class BrassPostListTable [friend]

Definition at line 40 of file brass_inverter.h.

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Member Data Documentation

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

Buffered changes to document lengths.

Definition at line 113 of file brass_inverter.h.

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

std::map<std::string, PostingChanges> Inverter::postlist_changes [private]

Buffered changes to postlists.

Definition at line 109 of file brass_inverter.h.

Referenced by add_posting(), clear(), flush_all_post_lists(), flush_post_list(), flush_post_lists(), get_cfdelta(), get_tfdelta(), remove_posting(), and update_posting().

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

• backends/brass/brass_inverter.h
• backends/brass/brass_inverter.cc