def purge_unused(self, note, purge_all_links=False):
"""
Delete files that were linked from the given note but no longer are.
@type note: model.Note
@param note: note to search for file links
@type purge_all_links: bool
@param purge_all_links: if True, delete all files that are/were linked from this note
"""
# load metadata for all files with the given note's note_id
files = self.__database.select_many(
File, File.sql_load_note_files(note.object_id))
files_to_delete = dict([(db_file.object_id, db_file)
for db_file in files])
# search through the note's contents for current links to files
if purge_all_links is False:
for match in self.FILE_LINK_PATTERN.finditer(note.contents):
file_id = match.groups(0)[0]
# we've found a link for file_id, so don't delete that file
files_to_delete.pop(file_id, None)
# for each file to delete, delete its metadata from the database and its data from the
# filesystem
for (file_id, db_file) in files_to_delete.items():
self.__database.execute(db_file.sql_delete(), commit=False)
self.__database.uncache(db_file)
Upload_file.delete_file(file_id)
self.__database.commit()
def purge_unused( self, note, purge_all_links = False ):
"""
Delete files that were linked from the given note but no longer are.
@type note: model.Note
@param note: note to search for file links
@type purge_all_links: bool
@param purge_all_links: if True, delete all files that are/were linked from this note
"""
# load metadata for all files with the given note's note_id
files = self.__database.select_many( File, File.sql_load_note_files( note.object_id ) )
files_to_delete = dict( [ ( db_file.object_id, db_file ) for db_file in files ] )
# search through the note's contents for current links to files
if purge_all_links is False:
for match in self.FILE_LINK_PATTERN.finditer( note.contents ):
file_id = match.groups( 0 )[ 0 ]
# we've found a link for file_id, so don't delete that file
files_to_delete.pop( file_id, None )
# for each file to delete, delete its metadata from the database and its data from the
# filesystem
for ( file_id, db_file ) in files_to_delete.items():
self.__database.execute( db_file.sql_delete(), commit = False )
self.__database.uncache( db_file )
Upload_file.delete_file( file_id )
self.__database.commit()
