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# exceptions.py - exceptions for SQLAlchemy
# Copyright (C) 2005,2006 Michael Bayer mike_mp@zzzcomputing.com
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
class SQLAlchemyError(Exception):
"""generic error class"""
pass
class SQLError(SQLAlchemyError):
"""raised when the execution of a SQL statement fails. includes accessors
for the underlying exception, as well as the SQL and bind parameters"""
def __init__(self, statement, params, orig):
SQLAlchemyError.__init__(self, "(%s) %s"% (orig.__class__.__name__, str(orig)))
self.statement = statement
self.params = params
self.orig = orig
def __str__(self):
return SQLAlchemyError.__str__(self) + " " + repr(self.statement) + " " + repr(self.params)
class ArgumentError(SQLAlchemyError):
"""raised for all those conditions where invalid arguments are sent to constructed
objects. This error generally corresponds to construction time state errors."""
pass
class TimeoutError(SQLAlchemyError):
"""raised when a connection pool times out on getting a connection"""
pass
class FlushError(SQLAlchemyError):
"""raised when an invalid condition is detected upon a flush()"""
pass
class InvalidRequestError(SQLAlchemyError):
"""sqlalchemy was asked to do something it cant do, return nonexistent data, etc.
This error generally corresponds to runtime state errors."""
pass
class NoSuchTableError(InvalidRequestError):
"""sqlalchemy was asked to load a table's definition from the database,
but the table doesn't exist."""
pass
class AssertionError(SQLAlchemyError):
"""corresponds to internal state being detected in an invalid state"""
pass
class DBAPIError(SQLAlchemyError):
"""something weird happened with a particular DBAPI version"""
def __init__(self, message, orig):
SQLAlchemyError.__init__(self, "(%s) (%s) %s"% (message, orig.__class__.__name__, str(orig)))
self.orig = orig
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