Terms Class Reference

Some terms which form a positional sub-query. More...

Collaboration diagram for Terms:

Public Member Functions
	~Terms ()
void	add_positional_term (Term *term)
	Add an unstemmed Term object to this Terms object. More...
void	adjust_window (size_t alternative_window)
Query *	as_phrase_query () const
	Convert to a Xapian::Query * using adjacent OP_PHRASE. More...
Query *	as_near_query () const
	Convert to a Xapian::Query * using OP_NEAR. More...
Query *	as_adj_query () const
	Convert to a Xapian::Query * using OP_PHRASE to implement ADJ. More...

Static Public Member Functions
static Terms *	create (State *state)
	Factory function - ensures heap allocation. More...

Private Member Functions
Query	opwindow_subq (Query::op op, const vector< Query > &v, Xapian::termcount w) const
Query *	as_opwindow_query (Query::op op, Xapian::termcount w_delta) const
	Convert to a query using the given operator and window size. More...
	Terms (bool no_pos)

Private Attributes
vector< Term * >	terms
size_t	window
	Window size. More...
bool	uniform_prefixes
	Keep track of whether the terms added all have the same list of prefixes. More...
const vector< string > *	prefixes
	The list of prefixes of the terms added. More...

Detailed Description

Some terms which form a positional sub-query.

Definition at line 1058 of file queryparser_internal.cc.

Constructor & Destructor Documentation

Terms()

Terms::Terms ( bool  no_pos )

inlineexplicitprivate

Definition at line 1123 of file queryparser_internal.cc.

~Terms()

Terms::~Terms ( )

inline

Definition at line 1134 of file queryparser_internal.cc.

Member Function Documentation

add_positional_term()

void Terms::add_positional_term ( Term *  term )

inline

Add an unstemmed Term object to this Terms object.

Definition at line 1141 of file queryparser_internal.cc.

References Term::field_info, Term::need_positions(), and FieldInfo::prefixes.

Referenced by Term::as_positional_unbroken(), and yy_reduce().

adjust_window()

void Terms::adjust_window ( size_t  alternative_window )

inline

Definition at line 1155 of file queryparser_internal.cc.

Referenced by yy_reduce().

as_adj_query()

Query* Terms::as_adj_query ( ) const

inline

Convert to a Xapian::Query * using OP_PHRASE to implement ADJ.

Definition at line 1175 of file queryparser_internal.cc.

Referenced by yy_reduce().

as_near_query()

Query* Terms::as_near_query ( ) const

inline

Convert to a Xapian::Query * using OP_NEAR.

Definition at line 1165 of file queryparser_internal.cc.

Referenced by yy_reduce().

as_opwindow_query()

Query* Terms::as_opwindow_query ( Query::op  op, Xapian::termcount  w_delta  ) const

inlineprivate

Convert to a query using the given operator and window size.

Definition at line 1094 of file queryparser_internal.cc.

References add_to_query().

as_phrase_query()

Query* Terms::as_phrase_query ( ) const

inline

Convert to a Xapian::Query * using adjacent OP_PHRASE.

Definition at line 1160 of file queryparser_internal.cc.

Referenced by yy_reduce().

create()

static Terms* Terms::create ( State *  state )

inlinestatic

Factory function - ensures heap allocation.

Definition at line 1130 of file queryparser_internal.cc.

References State::flags.

Referenced by yy_reduce().

opwindow_subq()

Query Terms::opwindow_subq ( Query::op  op, const vector< Query > &  v, Xapian::termcount  w  ) const

inlineprivate

Definition at line 1084 of file queryparser_internal.cc.

Member Data Documentation

prefixes

const vector<string>* Terms::prefixes

private

The list of prefixes of the terms added.

This will be NULL if the terms have different prefixes.

Definition at line 1082 of file queryparser_internal.cc.

terms

vector<Term *> Terms::terms

private

Definition at line 1059 of file queryparser_internal.cc.

uniform_prefixes

bool Terms::uniform_prefixes

private

Keep track of whether the terms added all have the same list of prefixes.

If so, we'll build a set of phrases, one using each prefix. This works around the limitation that a phrase cannot have multiple components which are "OR" combinations of terms, but is also probably what users expect: i.e., if a user specifies a phrase in a field, and that field maps to multiple prefixes, the user probably wants a phrase returned with all terms having one of those prefixes, rather than a phrase comprised of terms with differing prefixes.

Definition at line 1077 of file queryparser_internal.cc.

window

size_t Terms::window

private

Window size.

size_t(-1) means don't use positional info (so an OP_AND query gets created).

Definition at line 1066 of file queryparser_internal.cc.

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

• queryparser/queryparser_internal.cc