QueryOptimiser Class Reference

#include <queryoptimiser.h>

Collaboration diagram for QueryOptimiser:

Public Member Functions
	QueryOptimiser (const Xapian::Database::Internal &db_, LocalSubMatch &localsubmatch_, MultiMatch *matcher_, Xapian::doccount shard_index_)
	~QueryOptimiser ()
bool	full_db_has_positions () const
void	inc_total_subqs ()
Xapian::termcount	get_total_subqs () const
void	set_total_subqs (Xapian::termcount n)
LeafPostList *	open_post_list (const std::string &term, Xapian::termcount wqf, double factor)
LeafPostList *	open_lazy_post_list (const std::string &term, Xapian::termcount wqf, double factor)
PostList *	make_synonym_postlist (PostList *pl, double factor, bool wdf_disjoint)
const LeafPostList *	get_hint_postlist () const
void	set_hint_postlist (LeafPostList *new_hint)
void	destroy_postlist (PostList *pl)

Public Attributes
bool	need_positions
bool	in_synonym
Xapian::doccount	shard_index
const Xapian::Database::Internal &	db
Xapian::doccount	db_size
MultiMatch *	matcher

Private Member Functions
void	operator= (const QueryOptimiser &)
	Prevent assignment. More...
	QueryOptimiser (const QueryOptimiser &)
	Prevent copying. More...

Private Attributes
LocalSubMatch &	localsubmatch
Xapian::termcount	total_subqs
	How many weighted leaf subqueries there are. More...
LeafPostList *	hint
bool	hint_owned

Detailed Description

Definition at line 32 of file queryoptimiser.h.

Constructor & Destructor Documentation

QueryOptimiser() [1/2]

QueryOptimiser::QueryOptimiser ( const QueryOptimiser &  )

private

Prevent copying.

QueryOptimiser() [2/2]

QueryOptimiser::QueryOptimiser ( const Xapian::Database::Internal &  db_, LocalSubMatch &  localsubmatch_, MultiMatch *  matcher_, Xapian::doccount  shard_index_  )

inline

Definition at line 65 of file queryoptimiser.h.

~QueryOptimiser()

QueryOptimiser::~QueryOptimiser ( )

inline

Definition at line 76 of file queryoptimiser.h.

References hint.

Member Function Documentation

destroy_postlist()

void QueryOptimiser::destroy_postlist ( PostList *  pl )

inline

Definition at line 121 of file queryoptimiser.h.

Referenced by Xapian::Internal::Context::shrink().

full_db_has_positions()

bool QueryOptimiser::full_db_has_positions ( ) const

inline

Definition at line 80 of file queryoptimiser.h.

References MultiMatch::full_db_has_positions().

Referenced by Xapian::Internal::QueryWindowed::postlist_windowed().

get_hint_postlist()

const LeafPostList* QueryOptimiser::get_hint_postlist ( ) const

inline

Definition at line 111 of file queryoptimiser.h.

References hint.

Referenced by LocalSubMatch::open_post_list().

get_total_subqs()

Xapian::termcount QueryOptimiser::get_total_subqs ( ) const

inline

Definition at line 86 of file queryoptimiser.h.

References total_subqs.

Referenced by LocalSubMatch::get_postlist(), Xapian::Internal::QuerySynonym::postlist(), Xapian::Internal::QueryMax::postlist(), and Xapian::Internal::QueryWildcard::postlist().

inc_total_subqs()

void QueryOptimiser::inc_total_subqs ( )

inline

Definition at line 84 of file queryoptimiser.h.

References total_subqs.

Referenced by Xapian::Internal::QueryTerm::postlist(), Xapian::Internal::QueryPostingSource::postlist(), Xapian::Internal::QueryValueRange::postlist(), Xapian::Internal::QueryValueLE::postlist(), Xapian::Internal::QueryValueGE::postlist(), and Xapian::Internal::QueryWildcard::postlist().

make_synonym_postlist()

PostList* QueryOptimiser::make_synonym_postlist ( PostList *  pl, double  factor, bool  wdf_disjoint  )

inline

Definition at line 104 of file queryoptimiser.h.

References LocalSubMatch::make_synonym_postlist().

Referenced by Xapian::Internal::QueryBranch::do_synonym(), and Xapian::Internal::QueryWildcard::postlist().

open_lazy_post_list()

LeafPostList* QueryOptimiser::open_lazy_post_list ( const std::string &  term, Xapian::termcount  wqf, double  factor  )

inline

Definition at line 97 of file queryoptimiser.h.

References LocalSubMatch::open_post_list().

Referenced by Xapian::Internal::QueryWildcard::postlist().

open_post_list()

LeafPostList* QueryOptimiser::open_post_list ( const std::string &  term, Xapian::termcount  wqf, double  factor  )

inline

Definition at line 90 of file queryoptimiser.h.

References LocalSubMatch::open_post_list().

Referenced by Xapian::Internal::QueryTerm::postlist().

operator=()

void QueryOptimiser::operator= ( const QueryOptimiser &  )

private

Prevent assignment.

set_hint_postlist()

void QueryOptimiser::set_hint_postlist ( LeafPostList *  new_hint )

inline

Definition at line 113 of file queryoptimiser.h.

References hint.

Referenced by LocalSubMatch::open_post_list().

set_total_subqs()

void QueryOptimiser::set_total_subqs ( Xapian::termcount  n )

inline

Definition at line 88 of file queryoptimiser.h.

Referenced by Xapian::Internal::QuerySynonym::postlist(), Xapian::Internal::QueryMax::postlist(), and Xapian::Internal::QueryWildcard::postlist().

Member Data Documentation

db

const Xapian::Database::Internal& QueryOptimiser::db

Definition at line 59 of file queryoptimiser.h.

Referenced by Xapian::Internal::QueryPostingSource::postlist(), Xapian::Internal::QueryValueRange::postlist(), Xapian::Internal::QueryValueLE::postlist(), Xapian::Internal::QueryValueGE::postlist(), Xapian::Internal::QueryWildcard::postlist(), and Xapian::Internal::QueryWindowed::postlist_windowed().

db_size

Xapian::doccount QueryOptimiser::db_size

Definition at line 61 of file queryoptimiser.h.

Referenced by LocalSubMatch::open_post_list(), Xapian::Internal::QueryValueRange::postlist(), Xapian::Internal::QueryValueLE::postlist(), Xapian::Internal::QueryValueGE::postlist(), Xapian::Internal::OrContext::postlist(), Xapian::Internal::QueryAndNot::postlist(), Xapian::Internal::XorContext::postlist(), Xapian::Internal::QueryAndMaybe::postlist(), Xapian::Internal::AndContext::postlist(), and Xapian::Internal::OrContext::postlist_max().

hint

LeafPostList* QueryOptimiser::hint

private

Definition at line 48 of file queryoptimiser.h.

Referenced by get_hint_postlist(), set_hint_postlist(), and ~QueryOptimiser().

hint_owned

bool QueryOptimiser::hint_owned

private

Definition at line 50 of file queryoptimiser.h.

in_synonym

bool QueryOptimiser::in_synonym

Definition at line 55 of file queryoptimiser.h.

Referenced by Xapian::Internal::QueryBranch::do_synonym(), and Xapian::Internal::QueryWildcard::postlist().

localsubmatch

LocalSubMatch& QueryOptimiser::localsubmatch

private

Definition at line 39 of file queryoptimiser.h.

matcher

MultiMatch* QueryOptimiser::matcher

Definition at line 63 of file queryoptimiser.h.

Referenced by Xapian::Internal::QueryPostingSource::postlist(), Xapian::Internal::OrContext::postlist(), Xapian::Internal::QueryAndNot::postlist(), Xapian::Internal::XorContext::postlist(), Xapian::Internal::QueryAndMaybe::postlist(), Xapian::Internal::AndContext::postlist(), and Xapian::Internal::OrContext::postlist_max().

need_positions

bool QueryOptimiser::need_positions

Definition at line 53 of file queryoptimiser.h.

Referenced by Xapian::Internal::QueryWindowed::postlist_windowed().

shard_index

Xapian::doccount QueryOptimiser::shard_index

Definition at line 57 of file queryoptimiser.h.

Referenced by Xapian::Internal::QueryPostingSource::postlist().

total_subqs

Xapian::termcount QueryOptimiser::total_subqs

private

How many weighted leaf subqueries there are.

Used for scaling percentages when the highest weighted document doesn't "match all terms".

Definition at line 46 of file queryoptimiser.h.

Referenced by get_total_subqs(), and inc_total_subqs().

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

• matcher/queryoptimiser.h