1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
|
# exceptions.py - exceptions for SQLAlchemy
# Copyright (C) 2005, 2006, 2007 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."""
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.
"""
class CompileError(SQLAlchemyError):
"""Raised when an error occurs during SQL compilation"""
class TimeoutError(SQLAlchemyError):
"""Raised when a connection pool times out on getting a connection."""
class ConcurrentModificationError(SQLAlchemyError):
"""Raised when a concurrent modification condition is detected."""
class CircularDependencyError(SQLAlchemyError):
"""Raised by topological sorts when a circular dependency is detected"""
class FlushError(SQLAlchemyError):
"""Raised when an invalid condition is detected upon a ``flush()``."""
class InvalidRequestError(SQLAlchemyError):
"""SQLAlchemy was asked to do something it can't do, return
nonexistent data, etc.
This error generally corresponds to runtime state errors.
"""
class NoSuchTableError(InvalidRequestError):
"""SQLAlchemy was asked to load a table's definition from the
database, but the table doesn't exist.
"""
class AssertionError(SQLAlchemyError):
"""Corresponds to internal state being detected in an invalid state."""
class NoSuchColumnError(KeyError, SQLAlchemyError):
"""Raised by ``RowProxy`` when a nonexistent column is requested from a row."""
class DisconnectionError(SQLAlchemyError):
"""Raised within ``Pool`` when a disconnect is detected on a raw DBAPI connection."""
class DBAPIError(SQLAlchemyError):
"""Raised when the execution of a database operation fails.
``DBAPIError`` wraps exceptions raised by the DB-API underlying the
database operation. Driver-specific implementations of the standard
DB-API exception types are wrapped by matching sub-types of SQLAlchemy's
``DBAPIError`` when possible. DB-API's ``Error`` type maps to
``DBAPIError`` in SQLAlchemy, otherwise the names are identical. Note
that there is no guarantee that different DB-API implementations will
raise the same exception type for any given error condition.
If the error-raising operation occured in the execution of a SQL
statement, that statement and its parameters will be available on
the exception object in the ``statement`` and ``params`` attributes.
The wrapped exception object is available in the ``orig`` attribute.
Its type and properties are DB-API implementation specific.
"""
def __new__(cls, statement, params, orig, *args, **kw):
# Don't ever wrap these, just return them directly as if
# DBAPIError didn't exist.
if isinstance(orig, (KeyboardInterrupt, SystemExit)):
return orig
if orig is not None:
name, glob = type(orig).__name__, globals()
if name in glob and issubclass(glob[name], DBAPIError):
cls = glob[name]
return SQLAlchemyError.__new__(cls, statement, params, orig,
*args, **kw)
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 ' '.join([SQLAlchemyError.__str__(self),
repr(self.statement), repr(self.params)])
# As of 0.4, SQLError is now DBAPIError
SQLError = DBAPIError
class InterfaceError(DBAPIError):
"""Wraps a DB-API InterfaceError."""
class DatabaseError(DBAPIError):
"""Wraps a DB-API DatabaseError."""
class DataError(DatabaseError):
"""Wraps a DB-API DataError."""
class OperationalError(DatabaseError):
"""Wraps a DB-API OperationalError."""
class IntegrityError(DatabaseError):
"""Wraps a DB-API IntegrityError."""
class InterfaceError(DatabaseError):
"""Wraps a DB-API InterfaceError."""
class ProgrammingError(DatabaseError):
"""Wraps a DB-API ProgrammingError."""
class NotSupportedError(DatabaseError):
"""Wraps a DB-API NotSupportedError."""
|
