Source code for py2neo.cypher.error.core

#!/usr/bin/env python
# -*- encoding: utf-8 -*-

# Copyright 2011-2014, Nigel Small
#
# 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
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.


from importlib import import_module
import json

from py2neo.error import GraphError


[docs]class CypherError(GraphError): default_message = "The server returned a Cypher error" status_code_map = {} statement = None parameters = None def __init__(self, message, **kwargs): GraphError.__init__(self, message, **kwargs) if self.request: request_body = json.loads(self.request.body) self.statement = request_body.get("query") self.parameters = request_body.get("params")
[docs]class CypherTransactionError(CypherError): """ """ code = None message = None @classmethod def hydrate(cls, data): code = data["code"] message = data["message"] _, classification, category, title = code.split(".") error_module = import_module("py2neo.cypher.error." + category.lower()) error_cls = getattr(error_module, title) inst = error_cls(message) inst.code = code inst.message = message return inst
[docs]class ClientError(CypherTransactionError): """ The Client sent a bad request - changing the request might yield a successful outcome. """
[docs]class DatabaseError(CypherTransactionError): """ The database failed to service the request. """
[docs]class TransientError(CypherTransactionError): """ The database cannot service the request right now, retrying later might yield a successful outcome. """