Inverter::PostingChanges Class Reference

Class for storing the changes in frequencies for a term. More...

Collaboration diagram for Inverter::PostingChanges:

[legend]

List of all members.

Public Member Functions
	PostingChanges (Xapian::docid did, Xapian::termcount wdf)
	Constructor for an added posting.
	PostingChanges (Xapian::docid did, Xapian::termcount wdf, bool)
	Constructor for a removed posting.
	PostingChanges (Xapian::docid did, Xapian::termcount old_wdf, Xapian::termcount new_wdf)
	Constructor for an updated posting.
void	add_posting (Xapian::docid did, Xapian::termcount wdf)
	Add a posting.
void	remove_posting (Xapian::docid did, Xapian::termcount wdf)
	Remove a posting.
void	update_posting (Xapian::docid did, Xapian::termcount old_wdf, Xapian::termcount new_wdf)
	Update a posting.
Xapian::termcount_diff	get_tfdelta () const
	Get the term frequency delta.
Xapian::termcount_diff	get_cfdelta () const
	Get the collection frequency delta.
Private Attributes
Xapian::termcount_diff	tf_delta
	Change in term frequency,.
Xapian::termcount_diff	cf_delta
	Change in collection frequency.
std::map< Xapian::docid, Xapian::termcount >	pl_changes
	Changes to this term's postlist.
Friends
class	BrassPostListTable

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Detailed Description

Class for storing the changes in frequencies for a term.

Definition at line 43 of file brass_inverter.h.

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Constructor & Destructor Documentation

Inverter::PostingChanges::PostingChanges	(	Xapian::docid	did,
		Xapian::termcount	wdf
	)			[inline]

Constructor for an added posting.

Definition at line 57 of file brass_inverter.h.

References pl_changes.

Inverter::PostingChanges::PostingChanges	(	Xapian::docid	did,
		Xapian::termcount	wdf,
		bool
	)			[inline]

Constructor for a removed posting.

Definition at line 64 of file brass_inverter.h.

References DELETED_POSTING, and pl_changes.

Inverter::PostingChanges::PostingChanges	(	Xapian::docid	did,
		Xapian::termcount	old_wdf,
		Xapian::termcount	new_wdf
	)			[inline]

Constructor for an updated posting.

Definition at line 71 of file brass_inverter.h.

References pl_changes.

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Member Function Documentation

void Inverter::PostingChanges::add_posting	(	Xapian::docid	did,
		Xapian::termcount	wdf
	)			[inline]

Add a posting.

Definition at line 79 of file brass_inverter.h.

References cf_delta, pl_changes, and tf_delta.

Xapian::termcount_diff Inverter::PostingChanges::get_cfdelta

(

)

const [inline]

Get the collection frequency delta.

Definition at line 105 of file brass_inverter.h.

References cf_delta.

Referenced by BrassPostListTable::merge_changes().

Xapian::termcount_diff Inverter::PostingChanges::get_tfdelta

(

)

const [inline]

Get the term frequency delta.

Definition at line 102 of file brass_inverter.h.

References tf_delta.

Referenced by BrassPostListTable::merge_changes().

void Inverter::PostingChanges::remove_posting	(	Xapian::docid	did,
		Xapian::termcount	wdf
	)			[inline]

Remove a posting.

Definition at line 87 of file brass_inverter.h.

References cf_delta, DELETED_POSTING, pl_changes, and tf_delta.

void Inverter::PostingChanges::update_posting	(	Xapian::docid	did,
		Xapian::termcount	old_wdf,
		Xapian::termcount	new_wdf
	)			[inline]

Update a posting.

Definition at line 95 of file brass_inverter.h.

References cf_delta, and pl_changes.

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Friends And Related Function Documentation

friend class BrassPostListTable [friend]

Definition at line 44 of file brass_inverter.h.

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Member Data Documentation

Xapian::termcount_diff Inverter::PostingChanges::cf_delta [private]

Change in collection frequency.

Definition at line 50 of file brass_inverter.h.

Referenced by add_posting(), get_cfdelta(), remove_posting(), and update_posting().

std::map<Xapian::docid, Xapian::termcount> Inverter::PostingChanges::pl_changes [private]

Changes to this term's postlist.

Definition at line 53 of file brass_inverter.h.

Referenced by add_posting(), BrassPostListTable::merge_changes(), PostingChanges(), remove_posting(), and update_posting().

Xapian::termcount_diff Inverter::PostingChanges::tf_delta [private]

Change in term frequency,.

Definition at line 47 of file brass_inverter.h.

Referenced by add_posting(), get_tfdelta(), and remove_posting().

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

• backends/brass/brass_inverter.h