self.sanity_check_pattern = re.compile(r'^\w+$')
self.transliterator = Transliterator.createFromRules("special-phrases normalizer",
self.config.TERM_NORMALIZATION)
+ #This set will contain all existing phrases from the word table which
+ #no longer exist on the wiki.
+ #It contain tuples with the following format: (normalized_word, class, type, operator)
+ self.words_phrases_to_delete = set()
+ #This set will contain the phrases which still exist from the wiki.
+ #It is used to prevent duplicates on the wiki by removing them from
+ #the word_phrases_to_delete only at the end.
+ self.words_phrases_still_exist = set()
+ #This set will contain all existing place_classtype tables which doesn't match any
+ #special phrases class/type on the wiki.
+ self.table_phrases_to_delete = set()
def import_from_wiki(self, languages=None):
"""
if languages is not None and not isinstance(languages, list):
raise TypeError('The \'languages\' argument should be of type list.')
+ self._fetch_existing_words_phrases()
+ self._fetch_existing_place_classtype_tables()
+
#Get all languages to process.
languages = self._load_languages() if not languages else languages
class_type_pairs.update(self._process_xml_content(wiki_page_xml_content, lang))
self._create_place_classtype_table_and_indexes(class_type_pairs)
+ self._remove_non_existent_phrases_from_db()
self.db_connection.commit()
LOG.warning('Import done.')
+ def _fetch_existing_words_phrases(self):
+ """
+ Fetch existing special phrases from the word table.
+ Fill the word_phrases_to_delete set of the class.
+ """
+ #Only extract special phrases terms:
+ #If class=place and type=house then it is a housenumber term.
+ #If class=place and type=postcode then it is a postcode term.
+ word_query = """
+ SELECT word, class, type, operator FROM word
+ WHERE class != 'place' OR (type != 'house' AND type != 'postcode')
+ """
+ with self.db_connection.cursor() as db_cursor:
+ db_cursor.execute(SQL(word_query))
+ for row in db_cursor:
+ row[3] = '-' if row[3] is None else row[3]
+ self.words_phrases_to_delete.add(
+ (row[0], row[1], row[2], row[3])
+ )
+
+ def _fetch_existing_place_classtype_tables(self):
+ """
+ Fetch existing place_classtype tables.
+ Fill the table_phrases_to_delete set of the class.
+ """
+ query = """
+ SELECT table_name
+ FROM information_schema.tables
+ WHERE table_schema='public'
+ AND table_name like 'place_classtype_%';
+ """
+ with self.db_connection.cursor() as db_cursor:
+ db_cursor.execute(SQL(query))
+ for row in db_cursor:
+ self.table_phrases_to_delete.add(row[0])
+
def _load_white_and_black_lists(self):
"""
Load white and black lists from phrases-settings.json.
phrase_class = match[1].strip()
phrase_type = match[2].strip()
phrase_operator = match[3].strip()
+ #Needed if some operator in the wiki are not written in english
+ phrase_operator = '-' if phrase_operator not in ('near', 'in') else phrase_operator
#hack around a bug where building=yes was imported with quotes into the wiki
phrase_type = re.sub(r'\"|"', '', phrase_type)
- #sanity check, in case somebody added garbage in the wiki
- self._check_sanity(lang, phrase_class, phrase_type)
-
#blacklisting: disallow certain class/type combinations
if (
phrase_class in self.black_list.keys() and
):
continue
- #add class/type to the pairs dict
+ #Check if the phrase already exists in the database.
+ if (
+ (normalized_label, phrase_class, phrase_type, phrase_operator)
+ in self.words_phrases_to_delete
+ ):
+ #Remove this phrase from the ones to delete as it still exist on the wiki.
+ self.words_phrases_still_exist.add(
+ (normalized_label, phrase_class, phrase_type, phrase_operator)
+ )
+ class_type_pairs.add((phrase_class, phrase_type))
+ #Dont need to add this phrase as it already exists in the word table.
+ continue
+
+ #sanity check, in case somebody added garbage in the wiki
+ self._check_sanity(lang, phrase_class, phrase_type)
+
class_type_pairs.add((phrase_class, phrase_type))
self._process_amenity(
phrase_class = pair[0]
phrase_type = pair[1]
+ table_name = 'place_classtype_{}_{}'.format(phrase_class, phrase_type)
+
+ if table_name in self.table_phrases_to_delete:
+ #Remove this table from the ones to delete as it match a class/type
+ #still existing on the special phrases of the wiki.
+ self.table_phrases_to_delete.remove(table_name)
+ #So dont need to create the table and indexes.
+ continue
+
#Table creation
self._create_place_classtype_table(sql_tablespace, phrase_class, phrase_type)
.format(Identifier(table_name),
Identifier(self.config.DATABASE_WEBUSER)))
+ def _remove_non_existent_phrases_from_db(self):
+ """
+ Remove special phrases which doesn't exist on the wiki anymore.
+ Delete from the word table and delete the place_classtype tables.
+ """
+ LOG.warning('Cleaning database...')
+ self.words_phrases_to_delete = self.words_phrases_to_delete - self.words_phrases_still_exist
+ #Array containing all queries to execute. Contain tuples of format (query, parameters)
+ queries_parameters = []
+
+ #Delete phrases from the word table which are not on the wiki anymore.
+ for phrase_to_delete in self.words_phrases_to_delete:
+ if phrase_to_delete[3] == '-':
+ query = """
+ DELETE FROM word WHERE word = %s AND class = %s AND type = %s AND operator IS null
+ """
+ parameters = (phrase_to_delete[0], phrase_to_delete[1], phrase_to_delete[2], )
+ queries_parameters.append((query, parameters))
+ else:
+ query = """
+ DELETE FROM word WHERE word = %s AND class = %s AND type = %s AND operator = %s
+ """
+ parameters = (phrase_to_delete[0], phrase_to_delete[1],
+ phrase_to_delete[2], phrase_to_delete[3], )
+ queries_parameters.append((query, parameters))
+
+ #Delete place_classtype tables corresponding to class/type which are not on the wiki anymore
+ for table in self.table_phrases_to_delete:
+ query = SQL('DROP TABLE IF EXISTS {}').format(Identifier(table))
+ queries_parameters.append((query, ()))
+
+ with self.db_connection.cursor() as db_cursor:
+ for query, parameters in queries_parameters:
+ db_cursor.execute(query, parameters)
+
def _convert_php_settings_if_needed(self, file_path):
"""
Convert php settings file of special phrases to json file if it is still in php format.
projects / nominatim.git / blobdiff