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Name	Size	Permission
__init__.py	7.79 KB	-rw-r--r--
__init__.pyc	9.05 KB	-rw-r--r--
attributes.py	54.22 KB	-rw-r--r--
attributes.pyc	52.92 KB	-rw-r--r--
base.py	12.91 KB	-rw-r--r--
base.pyc	13.01 KB	-rw-r--r--
collections.py	52.03 KB	-rw-r--r--
collections.pyc	59.75 KB	-rw-r--r--
dependency.py	44.99 KB	-rw-r--r--
dependency.pyc	27.71 KB	-rw-r--r--
deprecated_interfaces.py	21.43 KB	-rw-r--r--
deprecated_interfaces.pyc	24.62 KB	-rw-r--r--
descriptor_props.py	23.88 KB	-rw-r--r--
descriptor_props.pyc	26.52 KB	-rw-r--r--
dynamic.py	13.03 KB	-rw-r--r--
dynamic.pyc	14.09 KB	-rw-r--r--
evaluator.py	4.91 KB	-rw-r--r--
evaluator.pyc	6.99 KB	-rw-r--r--
events.py	68.96 KB	-rw-r--r--
events.pyc	74.7 KB	-rw-r--r--
exc.py	5.31 KB	-rw-r--r--
exc.pyc	7.46 KB	-rw-r--r--
identity.py	6.92 KB	-rw-r--r--
identity.pyc	10.32 KB	-rw-r--r--
instrumentation.py	16.39 KB	-rw-r--r--
instrumentation.pyc	18.85 KB	-rw-r--r--
interfaces.py	18.54 KB	-rw-r--r--
interfaces.pyc	22.92 KB	-rw-r--r--
loading.py	20.76 KB	-rw-r--r--
loading.pyc	13.17 KB	-rw-r--r--
mapper.py	105.8 KB	-rw-r--r--
mapper.pyc	79.27 KB	-rw-r--r--
path_registry.py	7.49 KB	-rw-r--r--
path_registry.pyc	11.72 KB	-rw-r--r--
persistence.py	39.9 KB	-rw-r--r--
persistence.pyc	30.86 KB	-rw-r--r--
properties.py	9.33 KB	-rw-r--r--
properties.pyc	10.22 KB	-rw-r--r--
query.py	128.55 KB	-rw-r--r--
query.pyc	119.57 KB	-rw-r--r--
relationships.py	108.5 KB	-rw-r--r--
relationships.pyc	93.61 KB	-rw-r--r--
scoping.py	5.96 KB	-rw-r--r--
scoping.pyc	7.22 KB	-rw-r--r--
session.py	93.63 KB	-rw-r--r--
session.pyc	87.9 KB	-rw-r--r--
state.py	20.52 KB	-rw-r--r--
state.pyc	23.98 KB	-rw-r--r--
strategies.py	53.02 KB	-rw-r--r--
strategies.pyc	40.73 KB	-rw-r--r--
strategy_options.py	31.42 KB	-rw-r--r--
strategy_options.pyc	32.5 KB	-rw-r--r--
sync.py	4.63 KB	-rw-r--r--
sync.pyc	3.87 KB	-rw-r--r--
unitofwork.py	22.69 KB	-rw-r--r--
unitofwork.pyc	22.02 KB	-rw-r--r--
util.py	34.86 KB	-rw-r--r--
util.pyc	35.23 KB	-rw-r--r--

Code Editor : exc.py

# orm/exc.py
# Copyright (C) 2005-2014 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php

"""SQLAlchemy ORM exceptions."""
from .. import exc as sa_exc, util

NO_STATE = (AttributeError, KeyError)
"""Exception types that may be raised by instrumentation implementations."""

class StaleDataError(sa_exc.SQLAlchemyError):
    """An operation encountered database state that is unaccounted for.

Conditions which cause this to happen include:

* A flush may have attempted to update or delete rows
      and an unexpected number of rows were matched during
      the UPDATE or DELETE statement.   Note that when
      version_id_col is used, rows in UPDATE or DELETE statements
      are also matched against the current known version
      identifier.

* A mapped object with version_id_col was refreshed,
      and the version number coming back from the database does
      not match that of the object itself.

* A object is detached from its parent object, however
      the object was previously attached to a different parent
      identity which was garbage collected, and a decision
      cannot be made if the new parent was really the most
      recent "parent".

.. versionadded:: 0.7.4

"""

ConcurrentModificationError = StaleDataError

class FlushError(sa_exc.SQLAlchemyError):
    """A invalid condition was detected during flush()."""

class UnmappedError(sa_exc.InvalidRequestError):
    """Base for exceptions that involve expected mappings not present."""

class ObjectDereferencedError(sa_exc.SQLAlchemyError):
    """An operation cannot complete due to an object being garbage
    collected.

"""

class DetachedInstanceError(sa_exc.SQLAlchemyError):
    """An attempt to access unloaded attributes on a
    mapped instance that is detached."""

class UnmappedInstanceError(UnmappedError):
    """An mapping operation was requested for an unknown instance."""

@util.dependencies("sqlalchemy.orm.base")
    def __init__(self, base, obj, msg=None):
        if not msg:
            try:
                base.class_mapper(type(obj))
                name = _safe_cls_name(type(obj))
                msg = ("Class %r is mapped, but this instance lacks "
                       "instrumentation.  This occurs when the instance"
                       "is created before sqlalchemy.orm.mapper(%s) "
                       "was called." % (name, name))
            except UnmappedClassError:
                msg = _default_unmapped(type(obj))
                if isinstance(obj, type):
                    msg += (
                        '; was a class (%s) supplied where an instance was '
                        'required?' % _safe_cls_name(obj))
        UnmappedError.__init__(self, msg)

def __reduce__(self):
        return self.__class__, (None, self.args[0])

class UnmappedClassError(UnmappedError):
    """An mapping operation was requested for an unknown class."""

def __init__(self, cls, msg=None):
        if not msg:
            msg = _default_unmapped(cls)
        UnmappedError.__init__(self, msg)

def __reduce__(self):
        return self.__class__, (None, self.args[0])

class ObjectDeletedError(sa_exc.InvalidRequestError):
    """A refresh operation failed to retrieve the database
    row corresponding to an object's known primary key identity.

A refresh operation proceeds when an expired attribute is
    accessed on an object, or when :meth:`.Query.get` is
    used to retrieve an object which is, upon retrieval, detected
    as expired.   A SELECT is emitted for the target row
    based on primary key; if no row is returned, this
    exception is raised.

The true meaning of this exception is simply that
    no row exists for the primary key identifier associated
    with a persistent object.   The row may have been
    deleted, or in some cases the primary key updated
    to a new value, outside of the ORM's management of the target
    object.

"""
    @util.dependencies("sqlalchemy.orm.base")
    def __init__(self, base, state, msg=None):
        if not msg:
            msg = "Instance '%s' has been deleted, or its "\
                "row is otherwise not present." % base.state_str(state)

sa_exc.InvalidRequestError.__init__(self, msg)

def __reduce__(self):
        return self.__class__, (None, self.args[0])

class UnmappedColumnError(sa_exc.InvalidRequestError):
    """Mapping operation was requested on an unknown column."""

class NoResultFound(sa_exc.InvalidRequestError):
    """A database result was required but none was found."""

class MultipleResultsFound(sa_exc.InvalidRequestError):
    """A single database result was required but more than one were found."""

def _safe_cls_name(cls):
    try:
        cls_name = '.'.join((cls.__module__, cls.__name__))
    except AttributeError:
        cls_name = getattr(cls, '__name__', None)
        if cls_name is None:
            cls_name = repr(cls)
    return cls_name

@util.dependencies("sqlalchemy.orm.base")
def _default_unmapped(base, cls):
    try:
        mappers = base.manager_of_class(cls).mappers
    except NO_STATE:
        mappers = {}
    except TypeError:
        mappers = {}
    name = _safe_cls_name(cls)

if not mappers:
        return "Class '%s' is not mapped" % name

${this.title}

Code Editor : exc.py