def add_many(self, database_entries, ignore_already_added=False): """Add a row of database entries "at once". If this method is used, only one entry is saved in the undo history. Parameters ---------- database_entries : iterable of sunpy.database.tables.DatabaseEntry The database entries that will be added to the database. ignore_already_added : bool, optional See Database.add """ cmds = CompositeOperation() for database_entry in database_entries: # use list(self) instead of simply self because __contains__ checks # for existence in the database and not only all attributes except # ID. if database_entry in list(self) and not ignore_already_added: raise EntryAlreadyAddedError(database_entry) cmd = commands.AddEntry(self.session, database_entry) if self._enable_history: cmds.add(cmd) else: cmd() if database_entry.id is None: self._cache.append(database_entry) else: self._cache[database_entry.id] = database_entry if cmds: self._command_manager.do(cmds)
def add(self, database_entry, ignore_already_added=False): """Add the given database entry to the database table. Parameters ---------- database_entry : sunpy.database.tables.DatabaseEntry The database entry that will be added to this database. ignore_already_added : bool, optional If True, attempts to add an already existing database entry will result in a :exc:`sunpy.database.EntryAlreadyAddedError`. Otherwise, a new entry will be added and there will be duplicates in the database. """ if database_entry in self and not ignore_already_added: raise EntryAlreadyAddedError(database_entry) add_entry_cmd = commands.AddEntry(self.session, database_entry) if self._enable_history: self._command_manager.do(add_entry_cmd) else: add_entry_cmd() if database_entry.id is None: self._cache.append(database_entry) else: self._cache[database_entry.id] = database_entry
def add_from_dir(self, path, recursive=False, pattern='*', ignore_already_added=False, time_string_parse_format=None): """ Search the given directory for FITS files and use their FITS headers to add new entries to the database. Note that one entry in the database is assigned to a list of FITS headers, so not the number of FITS headers but the number of FITS files which have been read determine the number of database entries that will be added. FITS files are detected by reading the content of each file, the ``pattern`` argument may be used to avoid reading entire directories if one knows that all FITS files have the same filename extension. Parameters ---------- path : str The directory where to look for FITS files. recursive : bool, optional If True, the given directory will be searched recursively. Otherwise, only the given directory and no subdirectories are searched. The default is `False`, i.e. the given directory is not searched recursively. pattern : str, optional The pattern can be used to filter the list of filenames before the files are attempted to be read. The default is to collect all files. This value is passed to the function :func:`fnmatch.filter`, see its documentation for more information on the supported syntax. ignore_already_added : bool, optional See :meth:`sunpy.database.Database.add`. time_string_parse_format : str, optional Fallback timestamp format which will be passed to `~astropy.time.Time.strptime` if `sunpy.time.parse_time` is unable to automatically read the ``date-obs`` metadata. """ cmds = CompositeOperation() entries = tables.entries_from_dir( path, recursive, pattern, self.default_waveunit, time_string_parse_format=time_string_parse_format) for database_entry, filepath in entries: if database_entry in list(self) and not ignore_already_added: raise EntryAlreadyAddedError(database_entry) cmd = commands.AddEntry(self.session, database_entry) if self._enable_history: cmds.add(cmd) else: cmd() self._cache.append(database_entry) if cmds: self._command_manager.do(cmds)