C++ WritableDatabase::add_document方法代码示例

/// Indexes the given data.
bool XapianIndex::indexDocument(Tokenizer &tokens, const std::set<std::string> &labels,
	unsigned int &docId)
{
	unsigned int dataLength = 0;
	bool indexed = false;

	XapianDatabase *pDatabase = XapianDatabaseFactory::getDatabase(m_databaseName, false);
	if (pDatabase == NULL)
	{
		cerr << "Bad index " << m_databaseName << endl;
		return false;
	}

	try
	{
		// Get the document
		const Document *pDocument = tokens.getDocument();
		if (pDocument == NULL)
		{
#ifdef DEBUG
			cout << "XapianIndex::indexDocument: no document" << endl;
#endif
			return false;
		}

		// Cache the document's properties
		DocumentInfo docInfo(pDocument->getTitle(), pDocument->getLocation(),
			pDocument->getType(), pDocument->getLanguage());
		docInfo.setTimestamp(pDocument->getTimestamp());
		docInfo.setLocation(Url::canonicalizeUrl(docInfo.getLocation()));

		const char *pData = pDocument->getData(dataLength);
		if (pData != NULL)
		{
			m_stemLanguage = scanDocument(pData, dataLength, docInfo);
		}

		Xapian::Document doc;
		Xapian::termcount termPos = 0;

#ifdef DEBUG
		cout << "XapianIndex::indexDocument: adding terms" << endl;
#endif
		// Add the tokenizer's terms to the Xapian document
		addPostingsToDocument(tokens, doc, "", termPos, m_stemMode);
		// Add labels
		for (set<string>::const_iterator labelIter = labels.begin(); labelIter != labels.end();
			++labelIter)
		{
			doc.add_term(limitTermLength(string("XLABEL:") + *labelIter));
		}
		if (addCommonTerms(docInfo, doc, termPos) == true)
		{
			setDocumentData(docInfo, doc, m_stemLanguage);

			Xapian::WritableDatabase *pIndex = pDatabase->writeLock();
			if (pIndex != NULL)
			{
				// Add this document to the Xapian index
				docId = pIndex->add_document(doc);
				indexed = true;
			}
		}
	}
	catch (const Xapian::Error &error)
	{
		cerr << "Couldn't index document: " << error.get_type() << ": " << error.get_msg() << endl;
	}
	catch (...)
	{
		cerr << "Couldn't index document, unknown exception occured" << endl;
	}
	pDatabase->unlock();

	return indexed;
}

//.........这里部分代码省略.........
		if (project_group != NULL)
			doc.add_value (XapianValues::PROJECT_GROUP, project_group);

		// Add developer name
		const gchar *developer_name = as_component_get_developer_name (cpt);
		if (developer_name != NULL)
			doc.add_value (XapianValues::DEVELOPER_NAME, developer_name);

		// Add releases information
		Releases pb_rels;
		GPtrArray *releases = as_component_get_releases (cpt);
		for (uint i = 0; i < releases->len; i++) {
			AsRelease *rel = (AsRelease*) g_ptr_array_index (releases, i);
			Releases_Release *pb_rel = pb_rels.add_release ();

			// version
			pb_rel->set_version (as_release_get_version (rel));
			// UNIX timestamp
			pb_rel->set_unix_timestamp (as_release_get_timestamp (rel));
			// release urgency (if set)
			if (as_release_get_urgency (rel) != AS_URGENCY_KIND_UNKNOWN)
				pb_rel->set_urgency ((Releases_UrgencyType) as_release_get_urgency (rel));

			// add location urls
			GPtrArray *locations = as_release_get_locations (rel);
			for (uint j = 0; j < locations->len; j++) {
				pb_rel->add_location ((gchar*) g_ptr_array_index (locations, j));
			}

			// add checksum info
			for (uint j = 0; j < AS_CHECKSUM_KIND_LAST; j++) {
				if (as_release_get_checksum (rel, (AsChecksumKind) j) != NULL) {
					Releases_Checksum *pb_cs = pb_rel->add_checksum ();
					pb_cs->set_type ((Releases_ChecksumType) j);
					pb_cs->set_value (as_release_get_checksum (rel, (AsChecksumKind) j));
				}
			}

			// add size info
			for (uint j = 0; j < AS_SIZE_KIND_LAST; j++) {
				if (as_release_get_size (rel, (AsSizeKind) j) > 0) {
					Releases_Size *pb_s = pb_rel->add_size ();
					pb_s->set_type ((Releases_SizeType) j);
					pb_s->set_value (as_release_get_size (rel, (AsSizeKind) j));
				}
			}

			// add description
			if (as_release_get_description (rel) != NULL)
				pb_rel->set_description (as_release_get_description (rel));
		}
		string rel_ostr;
		if (pb_rels.SerializeToString (&rel_ostr))
			doc.add_value (XapianValues::RELEASES, rel_ostr);

		// Languages
		GHashTable *langs_table;
		langs_table = as_component_get_languages_map (cpt);
		if (g_hash_table_size (langs_table) > 0) {
			Languages pb_langs;
			string ostr;

			g_hash_table_foreach (langs_table,
						(GHFunc) langs_hashtable_to_langentry,
						&pb_langs);

			if (pb_rels.SerializeToString (&ostr))
				doc.add_value (XapianValues::LANGUAGES, ostr);
		}

		// Postprocess
		string docData = doc.get_data ();
		doc.add_term ("AA" + docData);
		term_generator.index_text_without_positions (docData, WEIGHT_DESKTOP_NAME);

		//! g_debug ("Adding component: %s", as_component_to_string (cpt));
		db.add_document (doc);

		// infer database locale from single component
		// TODO: Do that in a smarter way, if we support multiple databases later.
		if (db_locale.empty ())
			db_locale = as_component_get_active_locale (cpt);
	}

	db.set_metadata ("db-schema-version", to_string (AS_DB_SCHEMA_VERSION));
	db.set_metadata ("db-locale", db_locale);
	db.commit ();

	if (g_rename (m_dbPath.c_str (), old_path.c_str ()) < 0) {
		g_critical ("Error while moving old database out of the way.");
		return false;
	}
	if (g_rename (rebuild_path.c_str (), m_dbPath.c_str ()) < 0) {
		g_critical ("Error while moving rebuilt database.");
		return false;
	}
	as_utils_delete_dir_recursive (old_path.c_str ());

	return true;
}