Source code for pymodm.errors

# Copyright 2016 MongoDB, Inc.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.

"""Tools and types for Exception handling."""
from pymodm.compat import text_type

[docs]class DoesNotExist(Exception): pass
[docs]class MultipleObjectsReturned(Exception): pass
[docs]class ConnectionError(Exception): pass
[docs]class ModelDoesNotExist(Exception): """Raised when a reference to a Model cannot be resolved.""" pass
[docs]class InvalidModel(Exception): """Raised if a Model definition is invalid.""" pass
[docs]class ValidationError(Exception): """Indicates an error while validating data. A ValidationError may contain a single error, a list of errors, or even a dictionary mapping field names to errors. Any of these cases are acceptable to pass as a "message" to the constructor for ValidationError. """ def __init__(self, message, **kwargs): self._message = message def _get_message(self, message): if isinstance(message, ValidationError): return message.message elif isinstance(message, Exception): return text_type(message) elif isinstance(message, list): message_list = [] for item in message: extracted = self._get_message(item) if isinstance(extracted, list): message_list.extend(extracted) else: message_list.append(extracted) return message_list elif isinstance(message, dict): return {key: self._get_message(message[key]) for key in message} return message @property def message(self): return self._get_message(self._message) def __str__(self): return text_type(self.message) def __repr__(self): return '%s(%s)' % (self.__class__.__name__, self)
[docs]class OperationError(Exception): """Raised when an operation cannot be performed."""
[docs]class ConfigurationError(Exception): """Raised when there is a configuration error."""