code: def update_filter(self):
          
          # Consider the filter invalid
          self.valid_filter = False
  
          try:
              # Format the new filter
              filter_str = self._original_filter.format(
                  **self._component_context.properties
              )
          except KeyError as ex:
              # An entry is missing: abandon
              logging.warning("Missing filter value: %s", ex)
              raise ValueError("Missing filter value")
  
          try:
              # Parse the new LDAP filter
              new_filter = ldapfilter.get_ldap_filter(filter_str)
          except (TypeError, ValueError) as ex:
              logging.warning("Error parsing filter: %s", ex)
              raise ValueError("Error parsing filter")
  
          # The filter is valid
          self.valid_filter = True
  
          # Compare to the "old" one
          if new_filter != self.requirement.filter:
              # Replace the requirement filter
              self.requirement.filter = new_filter
              return True
  
          # Same filter
          return False
docs: Update the filter according to the new properties
  
          :return: True if the filter changed, else False
          :raise ValueError: The filter is invalid