A position list in a glass database. More...

#include <glass_positionlist.h>

Inheritance diagram for GlassPositionList:

Collaboration diagram for GlassPositionList:

Public Member Functions
	GlassPositionList ()
	Default constructor. More...

	GlassPositionList (const string &data)
	Construct and initialise with data. More...

	GlassPositionList (const GlassTable *table, Xapian::docid did, const string &tname)
	Construct and initialise with data. More...

bool	read_data (const string &data)
	Fill list with data, and move the position to the start. More...

bool	read_data (const GlassTable *table, Xapian::docid did, const string &tname)
	Fill list with data, and move the position to the start. More...

Xapian::termcount	get_approx_size () const
	Returns size of position list. More...

Xapian::termpos	get_position () const
	Returns current position. More...

bool	next ()
	Advance to the next term position in the list. More...

bool	skip_to (Xapian::termpos termpos)
	Advance to the first term position which is at least termpos. More...

Public Member Functions inherited from Xapian::PositionIterator::Internal
virtual	~Internal ()
	We have virtual methods and want to be able to delete derived classes using a pointer to the base class, so we need a virtual destructor. More...

Public Member Functions inherited from Xapian::Internal::intrusive_base
	intrusive_base ()
	Construct with no references. More...

Private Member Functions
	GlassPositionList (const GlassPositionList &)
	Copying is not allowed. More...

void	operator= (const GlassPositionList &)
	Assignment is not allowed. More...

Private Attributes
BitReader	rd
	Interpolative decoder. More...

Xapian::termpos	current_pos
	Current entry. More...

Xapian::termpos	last
	Last entry. More...

Xapian::termcount	size
	Number of entries. More...

AutoPtr< GlassCursor >	cursor
	Cursor for locating multiple entries efficiently. More...

bool	have_started
	Have we started iterating yet? More...

Additional Inherited Members
Public Attributes inherited from Xapian::Internal::intrusive_base
unsigned	_refs
	Reference count. More...

Protected Member Functions inherited from Xapian::PositionIterator::Internal
	Internal ()
	Only constructable as a base class for derived classes. More...

Detailed Description

A position list in a glass database.

Definition at line 87 of file glass_positionlist.h.

Constructor & Destructor Documentation

◆ GlassPositionList() [1/4]

GlassPositionList::GlassPositionList ( const GlassPositionList & )

private

Copying is not allowed.

◆ GlassPositionList() [2/4]

GlassPositionList::GlassPositionList ( )

inline

Default constructor.

Definition at line 114 of file glass_positionlist.h.

◆ GlassPositionList() [3/4]

GlassPositionList::GlassPositionList ( const string & data )

inlineexplicit

Construct and initialise with data.

Definition at line 118 of file glass_positionlist.h.

◆ GlassPositionList() [4/4]

GlassPositionList::GlassPositionList	(	const GlassTable *	table,
		Xapian::docid	did,
		const string &	tname
	)

inline

Construct and initialise with data.

Definition at line 123 of file glass_positionlist.h.

Member Function Documentation

◆ get_approx_size()

Xapian::termcount GlassPositionList::get_approx_size ( ) const

virtual

Returns size of position list.

Implements Xapian::PositionIterator::Internal.

Definition at line 150 of file glass_positionlist.cc.

References LOGCALL, and RETURN.

◆ get_position()

Xapian::termpos GlassPositionList::get_position ( ) const

virtual

Returns current position.

Either next() or skip_to() must have been called before this method can be called.

Implements Xapian::PositionIterator::Internal.

Definition at line 157 of file glass_positionlist.cc.

References Assert, LOGCALL, and RETURN.

◆ next()

bool GlassPositionList::next ( )

virtual

Advance to the next term position in the list.

Implements Xapian::PositionIterator::Internal.

Definition at line 165 of file glass_positionlist.cc.

References LOGCALL, and rare.

◆ operator=()

void GlassPositionList::operator= ( const GlassPositionList & )

private

Assignment is not allowed.

◆ read_data() [1/2]

bool GlassPositionList::read_data ( const string & data )

Fill list with data, and move the position to the start.

Returns: true if position data was read.

Definition at line 97 of file glass_positionlist.cc.

References LOGCALL, RETURN, and unpack_uint().

Referenced by GlassDatabase::read_position_list(), and GlassWritableDatabase::read_position_list().

◆ read_data() [2/2]

bool GlassPositionList::read_data	(	const GlassTable *	table,
		Xapian::docid	did,
		const string &	tname
	)

Fill list with data, and move the position to the start.

Returns: true if position data was read.

Definition at line 135 of file glass_positionlist.cc.

References GlassTable::cursor_get(), LOGCALL, GlassPositionListTable::make_key(), and RETURN.

◆ skip_to()

bool GlassPositionList::skip_to ( Xapian::termpos termpos )

virtual

Advance to the first term position which is at least termpos.

Implements Xapian::PositionIterator::Internal.

Definition at line 180 of file glass_positionlist.cc.

References LOGCALL.

Member Data Documentation

◆ current_pos

Xapian::termpos GlassPositionList::current_pos

private

Current entry.

Definition at line 92 of file glass_positionlist.h.

◆ cursor

AutoPtr<GlassCursor> GlassPositionList::cursor

private

Cursor for locating multiple entries efficiently.

Definition at line 101 of file glass_positionlist.h.

◆ have_started

bool GlassPositionList::have_started

private

Have we started iterating yet?

Definition at line 104 of file glass_positionlist.h.

◆ last

Xapian::termpos GlassPositionList::last

private

Last entry.

Definition at line 95 of file glass_positionlist.h.

◆ rd

BitReader GlassPositionList::rd

private

Interpolative decoder.

Definition at line 89 of file glass_positionlist.h.

◆ size

Xapian::termcount GlassPositionList::size

private

Number of entries.

Definition at line 98 of file glass_positionlist.h.

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

backends/glass/glass_positionlist.h
backends/glass/glass_positionlist.cc

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ GlassPositionList() [1/4]

◆ GlassPositionList() [2/4]

◆ GlassPositionList() [3/4]

◆ GlassPositionList() [4/4]

Member Function Documentation

◆ get_approx_size()

◆ get_position()

◆ next()

◆ operator=()

◆ read_data() [1/2]

◆ read_data() [2/2]

◆ skip_to()

Member Data Documentation

◆ current_pos

◆ cursor

◆ have_started

◆ last

◆ rd

◆ size