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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def GetEntries(self, parser_mediator, cache=None, database=None, **kwargs):
 """Extracts event objects from the database. Args: parser_mediator (ParserMediator):
 mediates interactions between parsers and other components, such as storage and dfvfs. cache (Optional[ESEDBCache]):
 cache. database (Optional[pyesedb.file]):
 ESE database. Raises: ValueError: If the database attribute is not valid. """

    if database is None:
      raise ValueError('Invalid database.')

    for table_name, callback_method in iter(self._tables.items()):
      if parser_mediator.abort:
        break

      if not callback_method:
        # Table names without a callback method are allowed to improve
        # the detection of a database based on its table names.
        continue

      callback = getattr(self, callback_method, None)
      if callback is None:
        logger.warning(
            '[{0:s}] missing callback method: {1:s} for table: {2:s}'.format(
                self.NAME, callback_method, table_name))
        continue

      esedb_table = database.get_table_by_name(table_name)
      if not esedb_table:
        logger.warning('[{0:s}] missing table: {1:s}'.format(
            self.NAME, table_name))
        continue

      # The database is passed in case the database contains table names
      # that are assigned dynamically and cannot be defined by
      # the table name-callback mechanism.
      callback(
          parser_mediator, cache=cache, database=database, table=esedb_table,
          **kwargs)