A writable glass database. More...

#include <glass_database.h>

Inheritance diagram for GlassWritableDatabase:

Collaboration diagram for GlassWritableDatabase:

Public Member Functions
	GlassWritableDatabase (const string &dir, int flags, int block_size)
	Create and open a writable glass database. More...

	~GlassWritableDatabase ()

Xapian::termcount	get_doclength (Xapian::docid did) const
	Virtual methods of Database::Internal. More...

Xapian::termcount	get_unique_terms (Xapian::docid did) const
	Get the number of unique term in document. More...

void	get_freqs (const string &term, Xapian::doccount termfreq_ptr, Xapian::termcount collfreq_ptr) const
	Returns frequencies for a term. More...

Xapian::doccount	get_value_freq (Xapian::valueno slot) const
	Return the frequency of a given value slot. More...

std::string	get_value_lower_bound (Xapian::valueno slot) const
	Get a lower bound on the values stored in the given value slot. More...

std::string	get_value_upper_bound (Xapian::valueno slot) const
	Get an upper bound on the values stored in the given value slot. More...

bool	term_exists (const string &tname) const
	Check whether a given term is in the database. More...

bool	has_positions () const
	Check whether this database contains any positional information. More...

LeafPostList *	open_post_list (const string &tname) const
	Open a posting list. More...

ValueList *	open_value_list (Xapian::valueno slot) const
	Open a value stream. More...

void	read_position_list (GlassPositionList *pos_list, Xapian::docid did, const string &term) const

Xapian::termcount	positionlist_count (Xapian::docid did, const string &term) const

PositionList *	open_position_list (Xapian::docid did, const string &term) const
	Open a position list for the given term in the given document. More...

TermList *	open_allterms (const string &prefix) const
	Open an allterms list. More...

void	add_spelling (const string &word, Xapian::termcount freqinc) const
	Add a word to the spelling dictionary. More...

void	remove_spelling (const string &word, Xapian::termcount freqdec) const
	Remove a word from the spelling dictionary. More...

TermList *	open_spelling_wordlist () const
	Return a termlist which returns the words which are spelling correction targets. More...

TermList *	open_synonym_keylist (const string &prefix) const
	Open a termlist returning each term which has synonyms. More...

void	add_synonym (const string &word, const string &synonym) const
	Add a synonym for a term. More...

void	remove_synonym (const string &word, const string &synonym) const
	Remove a synonym for a term. More...

void	clear_synonyms (const string &word) const
	Clear all synonyms for a term. More...

void	set_metadata (const string &key, const string &value)
	Set the metadata associated with a given key. More...

void	invalidate_doc_object (Xapian::Document::Internal *obj) const
	Notify the database that document is no longer valid. More...

bool	has_uncommitted_changes () const
	Return true if there are uncommitted changes. More...

Public Member Functions inherited from GlassDatabase
	GlassDatabase (const string &db_dir_, int flags=Xapian::DB_READONLY_, unsigned int block_size=0u)
	Create and open a glass database. More...

	GlassDatabase (int fd)

	~GlassDatabase ()

GlassCursor *	get_postlist_cursor () const
	Get a postlist table cursor (used by GlassValueList). More...

glass_revision_number_t	get_revision_number () const
	Get an object holding the revision number which the tables are opened at. More...

Xapian::doccount	get_doccount () const
	Virtual methods of Database::Internal. More...

Xapian::docid	get_lastdocid () const
	Return the last used document id of this (sub) database. More...

Xapian::totallength	get_total_length () const
	Return the total length of all documents in this database. More...

Xapian::termcount	get_doclength_lower_bound () const
	Get a lower bound on the length of a document in this DB. More...

Xapian::termcount	get_doclength_upper_bound () const
	Get an upper bound on the length of a document in this DB. More...

Xapian::termcount	get_wdf_upper_bound (const string &term) const
	Get an upper bound on the wdf of term term. More...

TermList *	open_term_list (Xapian::docid did) const
	Open a term list. More...

TermList *	open_spelling_termlist (const string &word) const
	Create a termlist tree from trigrams of word. More...

Xapian::doccount	get_spelling_frequency (const string &word) const
	Return the number of times word was added as a spelling. More...

TermList *	open_synonym_termlist (const string &term) const
	Open a termlist returning synonyms for a term. More...

string	get_metadata (const string &key) const
	Get the metadata associated with a given key. More...

TermList *	open_metadata_keylist (const std::string &prefix) const
	Open a termlist returning each metadata key. More...

void	write_changesets_to_fd (int fd, const string &start_revision, bool need_whole_db, Xapian::ReplicationInfo *info)
	Write a set of changesets to a file descriptor. More...

string	get_revision_info () const
	Get a string describing the current revision of the database. More...

string	get_uuid () const
	Get a UUID for the database. More...

void	request_document (Xapian::docid) const
	Request and later collect a document from the database. More...

void	readahead_for_query (const Xapian::Query &query)

void	throw_termlist_table_close_exception () const

int	get_backend_info (string *path) const
	Get backend information about this database. More...

bool	single_file () const

void	get_used_docid_range (Xapian::docid &first, Xapian::docid &last) const
	Find lowest and highest docids actually in use. More...

bool	locked () const
	Return true if the database is open for writing. More...

Public Member Functions inherited from Xapian::Database::Internal
virtual	~Internal ()
	Destroy the database. More...

virtual void	keep_alive ()
	Send a keep-alive signal to a remote database, to stop it from timing out. More...

void	begin_transaction (bool flushed)
	Begin a transaction. More...

void	commit_transaction ()
	Commit a transaction. More...

void	cancel_transaction ()
	Cancel a transaction. More...

virtual void	delete_document (const string &unique_term)
	Delete any documents indexed by a term from the database. More...

virtual Xapian::docid	replace_document (const string &unique_term, const Xapian::Document &document)
	Replace any documents matching a term. More...

virtual Xapian::Document::Internal *	collect_document (Xapian::docid did) const

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

Private Member Functions
void	check_flush_threshold ()
	Check if we should autoflush. More...

void	flush_postlist_changes ()
	Flush any unflushed postlist changes, but don't commit them. More...

void	close ()
	Close all the tables permanently. More...

void	apply ()
	Apply changes. More...

void	commit ()
	Implementation of virtual methods: see Database::Internal for details. More...

void	cancel ()
	Cancel pending modifications to the database. More...

Xapian::docid	add_document (const Xapian::Document &document)
	Add a new document to the database. More...

Xapian::docid	add_document_ (Xapian::docid did, const Xapian::Document &document)

void	delete_document (Xapian::docid did)
	Delete a document in the database. More...

void	replace_document (Xapian::docid did, const Xapian::Document &document)
	Replace a given document in the database. More...

Xapian::Document::Internal *	open_document (Xapian::docid did, bool lazy) const
	Open a document. More...

Private Attributes
Inverter	inverter

map< Xapian::valueno, ValueStats >	value_stats

Xapian::doccount	change_count
	The number of documents added, deleted, or replaced since the last flush. More...

Xapian::doccount	flush_threshold
	If change_count reaches this threshold we automatically flush. More...

Xapian::Document::Internal *	modify_shortcut_document
	A pointer to the last document which was returned by open_document(), or NULL if there is no such valid document. More...

Xapian::docid	modify_shortcut_docid
	The document ID for the last document returned by open_document(). More...

Additional Inherited Members
Static Public Member Functions inherited from GlassDatabase
static void	compact (Xapian::Compactor compactor, const char destdir, int fd, const std::vector< Xapian::Database::Internal * > &sources, const std::vector< Xapian::docid > &offset, size_t block_size, Xapian::Compactor::compaction_level compaction, unsigned flags, Xapian::docid last_docid)

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

Protected Types inherited from Xapian::Database::Internal
enum	{ TRANSACTION_UNIMPLEMENTED = -1 , TRANSACTION_NONE = 0 , TRANSACTION_UNFLUSHED = 1 , TRANSACTION_FLUSHED = 2 }
	Transaction state. More...

Protected Member Functions inherited from Xapian::Database::Internal
bool	transaction_active () const

	Internal ()
	Create a database - called only by derived classes. More...

void	dtor_called ()
	Internal method to perform cleanup when a writable database is destroyed with uncommitted changes. More...

Protected Attributes inherited from Xapian::Database::Internal
enum Xapian::Database::Internal:: { ... }	transaction_state
	Transaction state. More...

Detailed Description

A writable glass database.

Definition at line 332 of file glass_database.h.

Constructor & Destructor Documentation

◆ GlassWritableDatabase()

GlassWritableDatabase::GlassWritableDatabase	(	const string &	dir,
		int	flags,
		int	block_size
	)

Create and open a writable glass database.

Exceptions

Xapian::DatabaseOpeningError	thrown if database can't be opened.
Xapian::DatabaseVersionError	thrown if database is in an unsupported format. This implies that the database was created by an older or newer version of Xapian.

Parameters

dir	directory holding glass tables

Definition at line 1015 of file glass_database.cc.

References flush_threshold, and LOGCALL_CTOR.

◆ ~GlassWritableDatabase()

GlassWritableDatabase::~GlassWritableDatabase ( )

Definition at line 1032 of file glass_database.cc.

References Xapian::Database::Internal::dtor_called(), and LOGCALL_DTOR.

Member Function Documentation

◆ add_document()

Xapian::docid GlassWritableDatabase::add_document ( const Xapian::Document & document )

privatevirtual

Add a new document to the database.

See WritableDatabase::add_document() for more information.

Reimplemented from Xapian::Database::Internal.

Definition at line 1096 of file glass_database.cc.

References add_document_(), GlassVersion::get_last_docid(), GlassVersion::get_next_docid(), GLASS_MAX_DOCID, LOGCALL, RETURN, and GlassDatabase::version_file.

◆ add_document_()

Xapian::docid GlassWritableDatabase::add_document_	(	Xapian::docid	did,
		const Xapian::Document &	document
	)

private

◆ add_spelling()

void GlassWritableDatabase::add_spelling	(	const string &	word,
		Xapian::termcount	freqinc
	)		const

virtual

Add a word to the spelling dictionary.

If the word is already present, its frequency is increased.

Parameters

word	The word to add.
freqinc	How much to increase its frequency by.

Reimplemented from Xapian::Database::Internal.

Definition at line 1594 of file glass_database.cc.

References GlassSpellingTable::add_word(), and GlassDatabase::spelling_table.

◆ add_synonym()

void GlassWritableDatabase::add_synonym	(	const string &	term,
		const string &	synonym
	)		const

virtual

Add a synonym for a term.

If synonym is already a synonym for term, then no action is taken.

Reimplemented from Xapian::Database::Internal.

Definition at line 1622 of file glass_database.cc.

References GlassSynonymTable::add_synonym(), and GlassDatabase::synonym_table.

◆ apply()

void GlassWritableDatabase::apply ( )

private

Apply changes.

Definition at line 1089 of file glass_database.cc.

References GlassDatabase::apply(), GlassValueManager::set_value_stats(), GlassDatabase::value_manager, and value_stats.

Referenced by check_flush_threshold(), and commit().

◆ cancel()

void GlassWritableDatabase::cancel ( )

privatevirtual

Cancel pending modifications to the database.

Reimplemented from GlassDatabase.

Definition at line 1585 of file glass_database.cc.

References GlassDatabase::cancel(), change_count, Inverter::clear(), inverter, and value_stats.

Referenced by add_document_(), delete_document(), flush_postlist_changes(), and replace_document().

◆ check_flush_threshold()

void GlassWritableDatabase::check_flush_threshold ( )

private

Check if we should autoflush.

Called at the end of each document changing operation.

Definition at line 1048 of file glass_database.cc.

References apply(), change_count, flush_postlist_changes(), flush_threshold, and Xapian::Database::Internal::transaction_active().

Referenced by add_document_(), delete_document(), and replace_document().

◆ clear_synonyms()

void GlassWritableDatabase::clear_synonyms ( const string & term ) const

virtual

Clear all synonyms for a term.

If term has no synonyms, no action is taken.

Reimplemented from Xapian::Database::Internal.

Definition at line 1636 of file glass_database.cc.

References GlassSynonymTable::clear_synonyms(), and GlassDatabase::synonym_table.

◆ close()

void GlassWritableDatabase::close ( )

privatevirtual

Close all the tables permanently.

Reimplemented from GlassDatabase.

Definition at line 1078 of file glass_database.cc.

References GlassDatabase::close(), commit(), LOGCALL_VOID, and Xapian::Database::Internal::transaction_active().

◆ commit()

void GlassWritableDatabase::commit ( )

privatevirtual

Implementation of virtual methods: see Database::Internal for details.

Reimplemented from Xapian::Database::Internal.

Definition at line 1039 of file glass_database.cc.

References apply(), change_count, flush_postlist_changes(), and Xapian::Database::Internal::transaction_active().

Referenced by close().

◆ delete_document()

void GlassWritableDatabase::delete_document ( Xapian::docid did )

privatevirtual

Delete a document in the database.

See WritableDatabase::delete_document() for more information.

Reimplemented from Xapian::Database::Internal.

Definition at line 1160 of file glass_database.cc.

References Assert, GlassTermList::at_end(), cancel(), check_flush_threshold(), Inverter::delete_doclength(), GlassValueManager::delete_document(), GlassVersion::delete_document(), GlassDocDataTable::delete_document_data(), Inverter::delete_positionlist(), GlassTermListTable::delete_termlist(), GlassDatabase::docdata_table, GlassTermList::get_doclength(), get_doclength(), GlassTermList::get_termname(), GlassTermList::get_wdf(), inverter, GlassTable::is_open(), LOGCALL_VOID, modify_shortcut_docid, modify_shortcut_document, GlassTermList::next(), rare, Inverter::remove_posting(), GlassDatabase::termlist_table, GlassDatabase::throw_termlist_table_close_exception(), GlassDatabase::value_manager, value_stats, and GlassDatabase::version_file.

◆ flush_postlist_changes()

void GlassWritableDatabase::flush_postlist_changes ( )

private

Flush any unflushed postlist changes, but don't commit them.

Definition at line 1060 of file glass_database.cc.

References cancel(), change_count, GlassDatabase::changes, Inverter::flush(), Inverter::flush_pos_lists(), GlassChanges::get_oldest_changeset(), inverter, GlassDatabase::position_table, GlassDatabase::postlist_table, GlassVersion::set_oldest_changeset(), and GlassDatabase::version_file.

Referenced by check_flush_threshold(), and commit().

◆ get_doclength()

Xapian::termcount GlassWritableDatabase::get_doclength ( Xapian::docid did ) const

virtual

Virtual methods of Database::Internal.

Reimplemented from GlassDatabase.

Definition at line 1395 of file glass_database.cc.

References GlassDatabase::get_doclength(), Inverter::get_doclength(), inverter, LOGCALL, and RETURN.

Referenced by delete_document().

◆ get_freqs()

void GlassWritableDatabase::get_freqs	(	const string &	term,
		Xapian::doccount *	termfreq_ptr,
		Xapian::termcount *	collfreq_ptr
	)		const

virtual

Returns frequencies for a term.

Parameters

term	The term to get frequencies for
termfreq_ptr	Point to return number of docs indexed by term (or NULL not to return)
collfreq_ptr	Point to return number of occurrences of term in the database (or NULL not to return)

Reimplemented from GlassDatabase.

Definition at line 1424 of file glass_database.cc.

References Assert, Inverter::get_deltas(), GlassDatabase::get_freqs(), inverter, and LOGCALL_VOID.

Referenced by term_exists().

◆ get_unique_terms()

Xapian::termcount GlassWritableDatabase::get_unique_terms ( Xapian::docid did ) const

virtual

Get the number of unique term in document.

Parameters

did	The document id of the document whose number of terms is being requested.

Reimplemented from GlassDatabase.

Definition at line 1405 of file glass_database.cc.

References Assert, GlassTermList::get_approx_size(), Inverter::get_doclength(), GlassDatabase::get_unique_terms(), inverter, LOGCALL, and RETURN.

◆ get_value_freq()

Xapian::doccount GlassWritableDatabase::get_value_freq ( Xapian::valueno slot ) const

virtual

Return the frequency of a given value slot.

This is the number of documents which have a (non-empty) value stored in the slot.

Parameters

slot	The value slot to examine.

Reimplemented from GlassDatabase.

Definition at line 1441 of file glass_database.cc.

References GlassDatabase::get_value_freq(), LOGCALL, RETURN, and value_stats.

◆ get_value_lower_bound()

std::string GlassWritableDatabase::get_value_lower_bound ( Xapian::valueno slot ) const

virtual

Get a lower bound on the values stored in the given value slot.

If there are no values stored in the given value slot, this will return an empty string.

Parameters

slot	The value slot to examine.

Reimplemented from GlassDatabase.

Definition at line 1451 of file glass_database.cc.

References GlassDatabase::get_value_lower_bound(), LOGCALL, RETURN, and value_stats.

◆ get_value_upper_bound()

std::string GlassWritableDatabase::get_value_upper_bound ( Xapian::valueno slot ) const

virtual

Get an upper bound on the values stored in the given value slot.

If there are no values stored in the given value slot, this will return an empty string.

Parameters

slot	The value slot to examine.

Reimplemented from GlassDatabase.

Definition at line 1461 of file glass_database.cc.

References GlassDatabase::get_value_upper_bound(), LOGCALL, RETURN, and value_stats.

◆ has_positions()

bool GlassWritableDatabase::has_positions ( ) const

virtual

Check whether this database contains any positional information.

Reimplemented from GlassDatabase.

Definition at line 1480 of file glass_database.cc.

References Inverter::has_positions(), inverter, and GlassDatabase::position_table.

◆ has_uncommitted_changes()

bool GlassWritableDatabase::has_uncommitted_changes ( ) const

virtual

Return true if there are uncommitted changes.

Reimplemented from GlassDatabase.

Definition at line 1664 of file glass_database.cc.

References change_count, GlassDatabase::docdata_table, GlassSpellingTable::is_modified(), GlassSynonymTable::is_modified(), GlassTable::is_modified(), GlassValueManager::is_modified(), GlassDatabase::position_table, GlassDatabase::postlist_table, GlassDatabase::spelling_table, GlassDatabase::synonym_table, GlassDatabase::termlist_table, and GlassDatabase::value_manager.

◆ invalidate_doc_object()

void GlassWritableDatabase::invalidate_doc_object ( Xapian::Document::Internal * obj ) const

virtual

Notify the database that document is no longer valid.

This is used to invalidate references to a document kept by a database for doing lazy updates. If we moved to using a weak_ptr instead we wouldn't need a special method for this, but it would involve a fair bit of reorganising of other parts of the code.

Reimplemented from Xapian::Database::Internal.

Definition at line 1655 of file glass_database.cc.

References modify_shortcut_docid, and modify_shortcut_document.

◆ open_allterms()

TermList * GlassWritableDatabase::open_allterms ( const string & prefix ) const

virtual

Open an allterms list.

This is a list of all the terms in the database

Parameters

prefix The prefix to restrict the terms to.

Returns: A pointer to the newly created allterms list. This object must be deleted by the caller after use.

Reimplemented from GlassDatabase.

Definition at line 1565 of file glass_database.cc.

References change_count, Inverter::flush_post_lists(), inverter, LOGCALL, GlassDatabase::open_allterms(), GlassDatabase::postlist_table, and RETURN.

◆ open_document()

Xapian::Document::Internal * GlassWritableDatabase::open_document	(	Xapian::docid	did,
		bool	lazy
	)		const

privatevirtual

Open a document.

This is used to access the values and data associated with a document. See class Xapian::Document::Internal for further details.

Parameters

did	The document id which is being requested.
lazy	No need to check that this document actually exists. Used when we already know that this document exists (only a hint - the backend may still check).

Returns: A pointer to the newly created document object. This object must be deleted by the caller after use.

Reimplemented from GlassDatabase.

Definition at line 1384 of file glass_database.cc.

References LOGCALL, modify_shortcut_docid, modify_shortcut_document, GlassDatabase::open_document(), and RETURN.

◆ open_position_list()

PositionList * GlassWritableDatabase::open_position_list	(	Xapian::docid	did,
		const string &	tname
	)		const

virtual

Open a position list for the given term in the given document.

Parameters

did	The document id for which a position list is being requested.
tname	The term for which a position list is being requested.

Returns: A pointer to the newly created position list. This object must be deleted by the caller after use.

Reimplemented from GlassDatabase.

Definition at line 1546 of file glass_database.cc.

References Assert, Inverter::get_positionlist(), inverter, and GlassDatabase::position_table.

◆ open_post_list()

LeafPostList * GlassWritableDatabase::open_post_list ( const string & tname ) const

virtual

Open a posting list.

Method defined by subclass to open a posting list. This is a list of all the documents which contain a given term.

Parameters

tname The term whose posting list is being requested.

Returns: A pointer to the newly created posting list. If the term doesn't exist, a LeafPostList object returning no documents is returned, which makes it easier to implement a search over multiple databases. This object must be deleted by the caller after use.

Reimplemented from GlassDatabase.

Definition at line 1486 of file glass_database.cc.

References Inverter::flush_doclengths(), Inverter::flush_post_list(), GlassDatabase::get_doccount(), GlassVersion::get_last_docid(), GlassDatabase::GlassAllDocsPostList, GlassDatabase::GlassPostList, inverter, LOGCALL, GlassDatabase::postlist_table, RETURN, and GlassDatabase::version_file.

◆ open_spelling_wordlist()

TermList * GlassWritableDatabase::open_spelling_wordlist ( ) const

virtual

Return a termlist which returns the words which are spelling correction targets.

If there are no spelling correction targets, returns NULL.

Reimplemented from GlassDatabase.

Definition at line 1608 of file glass_database.cc.

References GlassSpellingTable::merge_changes(), GlassDatabase::open_spelling_wordlist(), and GlassDatabase::spelling_table.

◆ open_synonym_keylist()

TermList * GlassWritableDatabase::open_synonym_keylist ( const string & prefix ) const

virtual

Open a termlist returning each term which has synonyms.

Parameters

prefix If non-empty, only terms with this prefix are returned.

Reimplemented from GlassDatabase.

Definition at line 1615 of file glass_database.cc.

References GlassSynonymTable::merge_changes(), GlassDatabase::open_synonym_keylist(), and GlassDatabase::synonym_table.

◆ open_value_list()

ValueList * GlassWritableDatabase::open_value_list ( Xapian::valueno slot ) const

virtual

Open a value stream.

This returns the value in a particular slot for each document.

Parameters

slot	The value slot.

Returns: Pointer to a new ValueList object which should be deleted by the caller once it is no longer needed.

Reimplemented from GlassDatabase.

Definition at line 1507 of file glass_database.cc.

References change_count, LOGCALL, GlassValueManager::merge_changes(), GlassDatabase::open_value_list(), RETURN, and GlassDatabase::value_manager.

◆ positionlist_count()

Xapian::termcount GlassWritableDatabase::positionlist_count	(	Xapian::docid	did,
		const string &	term
	)		const

virtual

Reimplemented from GlassDatabase.

Definition at line 1532 of file glass_database.cc.

References Assert, Inverter::get_positionlist(), inverter, GlassDatabase::position_table, GlassPositionListTable::positionlist_count(), and GlassDatabase::positionlist_count().

◆ read_position_list()

void GlassWritableDatabase::read_position_list	(	GlassPositionList *	pos_list,
		Xapian::docid	did,
		const string &	term
	)		const

virtual

Reimplemented from GlassDatabase.

Definition at line 1518 of file glass_database.cc.

References Assert, Inverter::get_positionlist(), inverter, GlassPositionList::read_data(), and GlassDatabase::read_position_list().

◆ remove_spelling()

void GlassWritableDatabase::remove_spelling	(	const string &	word,
		Xapian::termcount	freqdec
	)		const

virtual

Remove a word from the spelling dictionary.

The word's frequency is decreased, and if would become zero or less then the word is removed completely.

Parameters

word	The word to remove.
freqdec	How much to decrease its frequency by.

Reimplemented from Xapian::Database::Internal.

Definition at line 1601 of file glass_database.cc.

References GlassSpellingTable::remove_word(), and GlassDatabase::spelling_table.

◆ remove_synonym()

void GlassWritableDatabase::remove_synonym	(	const string &	term,
		const string &	synonym
	)		const

virtual

Remove a synonym for a term.

If synonym isn't a synonym for term, then no action is taken.

Reimplemented from Xapian::Database::Internal.

Definition at line 1629 of file glass_database.cc.

References GlassSynonymTable::remove_synonym(), and GlassDatabase::synonym_table.

◆ replace_document()

void GlassWritableDatabase::replace_document	(	Xapian::docid	did,
		const Xapian::Document &	document
	)

privatevirtual

Replace a given document in the database.

See WritableDatabase::replace_document() for more information.

Reimplemented from Xapian::Database::Internal.

Definition at line 1224 of file glass_database.cc.

References GlassVersion::add_document(), add_document_(), Inverter::add_posting(), Assert, GlassTermList::at_end(), cancel(), check_flush_threshold(), GlassVersion::check_wdf(), GlassVersion::delete_document(), Inverter::delete_positionlist(), GlassDatabase::docdata_table, GlassPostListTable::document_exists(), Xapian::Document::get_data(), GlassTermList::get_doclength(), GlassVersion::get_last_docid(), GlassTermList::get_termname(), GlassTermList::get_wdf(), Xapian::TermIterator::get_wdf(), Xapian::Document::internal, inverter, GlassTable::is_open(), LOGCALL_VOID, LOGLINE, MAX_SAFE_TERM_LENGTH, modify_shortcut_docid, modify_shortcut_document, GlassTermList::next(), GlassDatabase::position_table, GlassDatabase::postlist_table, Inverter::remove_posting(), GlassValueManager::replace_document(), GlassDocDataTable::replace_document_data(), Inverter::set_doclength(), GlassVersion::set_last_docid(), Inverter::set_positionlist(), GlassTermListTable::set_termlist(), STRINGIZE, Xapian::Document::termlist_begin(), Xapian::Document::termlist_end(), GlassDatabase::termlist_table, GlassDatabase::throw_termlist_table_close_exception(), Inverter::update_posting(), GlassDatabase::value_manager, value_stats, and GlassDatabase::version_file.

◆ set_metadata()

void GlassWritableDatabase::set_metadata	(	const string &	key,
		const string &	value
	)

virtual

Set the metadata associated with a given key.

See WritableDatabase::set_metadata() for more information.

Reimplemented from Xapian::Database::Internal.

Definition at line 1642 of file glass_database.cc.

References GlassTable::add(), GlassTable::del(), LOGCALL_VOID, and GlassDatabase::postlist_table.

◆ term_exists()

bool GlassWritableDatabase::term_exists ( const string & tname ) const

virtual

Check whether a given term is in the database.

Parameters

tname The term whose presence is being checked.

Reimplemented from GlassDatabase.

Definition at line 1471 of file glass_database.cc.

References get_freqs(), LOGCALL, and RETURN.

Member Data Documentation

◆ change_count

Xapian::doccount GlassWritableDatabase::change_count

mutableprivate

The number of documents added, deleted, or replaced since the last flush.

Definition at line 340 of file glass_database.h.

Referenced by cancel(), check_flush_threshold(), commit(), flush_postlist_changes(), has_uncommitted_changes(), open_allterms(), and open_value_list().

◆ flush_threshold

Xapian::doccount GlassWritableDatabase::flush_threshold

private

If change_count reaches this threshold we automatically flush.

Definition at line 343 of file glass_database.h.

Referenced by check_flush_threshold(), and GlassWritableDatabase().

◆ inverter

Inverter GlassWritableDatabase::inverter

mutableprivate

Definition at line 333 of file glass_database.h.

Referenced by add_document_(), cancel(), delete_document(), flush_postlist_changes(), get_doclength(), get_freqs(), get_unique_terms(), has_positions(), open_allterms(), open_position_list(), open_post_list(), positionlist_count(), read_position_list(), and replace_document().

◆ modify_shortcut_docid

Xapian::docid GlassWritableDatabase::modify_shortcut_docid

mutableprivate

The document ID for the last document returned by open_document().

Definition at line 355 of file glass_database.h.

Referenced by delete_document(), invalidate_doc_object(), open_document(), and replace_document().

◆ modify_shortcut_document

Xapian::Document::Internal* GlassWritableDatabase::modify_shortcut_document

mutableprivate

A pointer to the last document which was returned by open_document(), or NULL if there is no such valid document.

This is used purely for comparing with a supplied document to help with optimising replace_document. When the document internals are deleted, this pointer gets set to NULL.

Definition at line 351 of file glass_database.h.

Referenced by delete_document(), invalidate_doc_object(), open_document(), and replace_document().

◆ value_stats

map<Xapian::valueno, ValueStats> GlassWritableDatabase::value_stats

mutableprivate

Definition at line 335 of file glass_database.h.

Referenced by add_document_(), apply(), cancel(), delete_document(), get_value_freq(), get_value_lower_bound(), get_value_upper_bound(), and replace_document().

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

backends/glass/glass_database.h
backends/glass/glass_database.cc

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ GlassWritableDatabase()

◆ ~GlassWritableDatabase()

Member Function Documentation

◆ add_document()

◆ add_document_()

◆ add_spelling()

◆ add_synonym()

◆ apply()

◆ cancel()

◆ check_flush_threshold()

◆ clear_synonyms()

◆ close()

◆ commit()

◆ delete_document()

◆ flush_postlist_changes()

◆ get_doclength()

◆ get_freqs()

◆ get_unique_terms()

◆ get_value_freq()

◆ get_value_lower_bound()

◆ get_value_upper_bound()

◆ has_positions()

◆ has_uncommitted_changes()

◆ invalidate_doc_object()

◆ open_allterms()

◆ open_document()

◆ open_position_list()

◆ open_post_list()

◆ open_spelling_wordlist()

◆ open_synonym_keylist()

◆ open_value_list()

◆ positionlist_count()

◆ read_position_list()

◆ remove_spelling()

◆ remove_synonym()

◆ replace_document()

◆ set_metadata()

◆ term_exists()

Member Data Documentation

◆ change_count

◆ flush_threshold

◆ inverter

◆ modify_shortcut_docid

◆ modify_shortcut_document

◆ value_stats