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[soc2009/multidb] Remove cross database protection. This will be readded in a way that is more ammenable to master-slave and other mirroring schemes.
git-svn-id: http://code.djangoproject.com/svn/django/branches/soc2009/multidb@11927 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Alex Gaynor
parent
4424a8d3d8
commit
e4f8015112
@ -1,7 +1,8 @@
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from django.db import connection, transaction, DEFAULT_DB_ALIAS
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from django.db.backends import util
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from django.db.models import signals, get_model
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from django.db.models.fields import AutoField, Field, IntegerField, PositiveIntegerField, PositiveSmallIntegerField, FieldDoesNotExist
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from django.db.models.fields import (AutoField, Field, IntegerField,
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PositiveIntegerField, PositiveSmallIntegerField, FieldDoesNotExist)
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from django.db.models.related import RelatedObject
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from django.db.models.query import QuerySet
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from django.db.models.query_utils import QueryWrapper
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@ -11,10 +12,6 @@ from django.utils.functional import curry
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from django.core import exceptions
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from django import forms
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try:
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set
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except NameError:
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from sets import Set as set # Python 2.3 fallback
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RECURSIVE_RELATIONSHIP_CONSTANT = 'self'
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@ -284,11 +281,11 @@ class ReverseSingleRelatedObjectDescriptor(object):
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elif value is not None and value._state.db != instance._state.db:
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if instance._state.db is None:
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instance._state.db = value._state.db
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elif value._state.db is None:
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else:#elif value._state.db is None:
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value._state.db = instance._state.db
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elif value._state.db is not None and instance._state.db is not None:
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raise ValueError('Cannot assign "%r": instance is on database "%s", value is is on database "%s"' %
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(value, instance._state.db, value._state.db))
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# elif value._state.db is not None and instance._state.db is not None:
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# raise ValueError('Cannot assign "%r": instance is on database "%s", value is is on database "%s"' %
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# (value, instance._state.db, value._state.db))
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# If we're setting the value of a OneToOneField to None, we need to clear
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# out the cache on any old related object. Otherwise, deleting the
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@ -503,9 +500,9 @@ def create_many_related_manager(superclass, rel=False):
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new_ids = set()
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for obj in objs:
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if isinstance(obj, self.model):
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if obj._state.db != self.instance._state.db:
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raise ValueError('Cannot add "%r": instance is on database "%s", value is is on database "%s"' %
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(obj, self.instance._state.db, obj._state.db))
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# if obj._state.db != self.instance._state.db:
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# raise ValueError('Cannot add "%r": instance is on database "%s", value is is on database "%s"' %
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# (obj, self.instance._state.db, obj._state.db))
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new_ids.add(obj.pk)
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elif isinstance(obj, Model):
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raise TypeError, "'%s' instance expected" % self.model._meta.object_name
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@ -259,53 +259,53 @@ class QueryTestCase(TestCase):
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self.assertEquals(list(Person.objects.using('other').filter(book__title='Dive into HTML5').values_list('name', flat=True)),
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[u'Mark Pilgrim'])
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def test_m2m_cross_database_protection(self):
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"Operations that involve sharing M2M objects across databases raise an error"
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# Create a book and author on the default database
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pro = Book.objects.create(title="Pro Django",
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published=datetime.date(2008, 12, 16))
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# def test_m2m_cross_database_protection(self):
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# "Operations that involve sharing M2M objects across databases raise an error"
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# # Create a book and author on the default database
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# pro = Book.objects.create(title="Pro Django",
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# published=datetime.date(2008, 12, 16))
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marty = Person.objects.create(name="Marty Alchin")
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# marty = Person.objects.create(name="Marty Alchin")
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# Create a book and author on the other database
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dive = Book.objects.using('other').create(title="Dive into Python",
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published=datetime.date(2009, 5, 4))
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# # Create a book and author on the other database
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# dive = Book.objects.using('other').create(title="Dive into Python",
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# published=datetime.date(2009, 5, 4))
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mark = Person.objects.using('other').create(name="Mark Pilgrim")
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# Set a foreign key set with an object from a different database
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try:
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marty.book_set = [pro, dive]
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# mark = Person.objects.using('other').create(name="Mark Pilgrim")
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# # Set a foreign key set with an object from a different database
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# try:
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# marty.book_set = [pro, dive]
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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# Add to an m2m with an object from a different database
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try:
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marty.book_set.add(dive)
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# # Add to an m2m with an object from a different database
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# try:
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# marty.book_set.add(dive)
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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# Set a m2m with an object from a different database
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try:
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marty.book_set = [pro, dive]
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# # Set a m2m with an object from a different database
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# try:
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# marty.book_set = [pro, dive]
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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# Add to a reverse m2m with an object from a different database
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try:
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dive.authors.add(marty)
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# # Add to a reverse m2m with an object from a different database
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# try:
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# dive.authors.add(marty)
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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# Set a reverse m2m with an object from a different database
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try:
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dive.authors = [mark, marty]
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# # Set a reverse m2m with an object from a different database
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# try:
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# dive.authors = [mark, marty]
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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def test_foreign_key_separation(self):
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"FK fields are constrained to a single database"
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@ -401,88 +401,88 @@ class QueryTestCase(TestCase):
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self.assertEquals(list(Person.objects.using('other').filter(edited__title='Dive into Python').values_list('name', flat=True)),
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[])
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def test_foreign_key_cross_database_protection(self):
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"Operations that involve sharing FK objects across databases raise an error"
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# Create a book and author on the default database
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pro = Book.objects.create(title="Pro Django",
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published=datetime.date(2008, 12, 16))
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# def test_foreign_key_cross_database_protection(self):
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# "Operations that involve sharing FK objects across databases raise an error"
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# # Create a book and author on the default database
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# pro = Book.objects.create(title="Pro Django",
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# published=datetime.date(2008, 12, 16))
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marty = Person.objects.create(name="Marty Alchin")
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# marty = Person.objects.create(name="Marty Alchin")
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# Create a book and author on the other database
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dive = Book.objects.using('other').create(title="Dive into Python",
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published=datetime.date(2009, 5, 4))
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# # Create a book and author on the other database
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# dive = Book.objects.using('other').create(title="Dive into Python",
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# published=datetime.date(2009, 5, 4))
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mark = Person.objects.using('other').create(name="Mark Pilgrim")
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# mark = Person.objects.using('other').create(name="Mark Pilgrim")
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# Set a foreign key with an object from a different database
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try:
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dive.editor = marty
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# # Set a foreign key with an object from a different database
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# try:
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# dive.editor = marty
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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# Set a foreign key set with an object from a different database
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try:
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marty.edited = [pro, dive]
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# # Set a foreign key set with an object from a different database
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# try:
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# marty.edited = [pro, dive]
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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# Add to a foreign key set with an object from a different database
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try:
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marty.edited.add(dive)
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# # Add to a foreign key set with an object from a different database
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# try:
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# marty.edited.add(dive)
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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# BUT! if you assign a FK object when the base object hasn't
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# been saved yet, you implicitly assign the database for the
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# base object.
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chris = Person(name="Chris Mills")
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html5 = Book(title="Dive into HTML5", published=datetime.date(2010, 3, 15))
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# initially, no db assigned
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self.assertEquals(chris._state.db, None)
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self.assertEquals(html5._state.db, None)
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# # BUT! if you assign a FK object when the base object hasn't
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# # been saved yet, you implicitly assign the database for the
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# # base object.
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# chris = Person(name="Chris Mills")
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# html5 = Book(title="Dive into HTML5", published=datetime.date(2010, 3, 15))
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# # initially, no db assigned
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# self.assertEquals(chris._state.db, None)
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# self.assertEquals(html5._state.db, None)
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# old object comes from 'other', so the new object is set to use 'other'...
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dive.editor = chris
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html5.editor = mark
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# self.assertEquals(chris._state.db, 'other')
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self.assertEquals(html5._state.db, 'other')
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# ... but it isn't saved yet
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self.assertEquals(list(Person.objects.using('other').values_list('name',flat=True)),
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[u'Mark Pilgrim'])
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self.assertEquals(list(Book.objects.using('other').values_list('title',flat=True)),
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[u'Dive into Python'])
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# # old object comes from 'other', so the new object is set to use 'other'...
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# dive.editor = chris
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# html5.editor = mark
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# # self.assertEquals(chris._state.db, 'other')
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# self.assertEquals(html5._state.db, 'other')
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# # ... but it isn't saved yet
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# self.assertEquals(list(Person.objects.using('other').values_list('name',flat=True)),
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# [u'Mark Pilgrim'])
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# self.assertEquals(list(Book.objects.using('other').values_list('title',flat=True)),
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# [u'Dive into Python'])
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# When saved (no using required), new objects goes to 'other'
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chris.save()
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html5.save()
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self.assertEquals(list(Person.objects.using('default').values_list('name',flat=True)),
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[u'Marty Alchin'])
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self.assertEquals(list(Person.objects.using('other').values_list('name',flat=True)),
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[u'Chris Mills', u'Mark Pilgrim'])
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self.assertEquals(list(Book.objects.using('default').values_list('title',flat=True)),
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[u'Pro Django'])
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self.assertEquals(list(Book.objects.using('other').values_list('title',flat=True)),
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[u'Dive into HTML5', u'Dive into Python'])
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# # When saved (no using required), new objects goes to 'other'
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# chris.save()
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# html5.save()
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# self.assertEquals(list(Person.objects.using('default').values_list('name',flat=True)),
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# [u'Marty Alchin'])
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# self.assertEquals(list(Person.objects.using('other').values_list('name',flat=True)),
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# [u'Chris Mills', u'Mark Pilgrim'])
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# self.assertEquals(list(Book.objects.using('default').values_list('title',flat=True)),
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# [u'Pro Django'])
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# self.assertEquals(list(Book.objects.using('other').values_list('title',flat=True)),
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# [u'Dive into HTML5', u'Dive into Python'])
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# This also works if you assign the FK in the constructor
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water = Book(title="Dive into Water", published=datetime.date(2001, 1, 1), editor=mark)
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self.assertEquals(water._state.db, 'other')
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# ... but it isn't saved yet
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self.assertEquals(list(Book.objects.using('default').values_list('title',flat=True)),
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[u'Pro Django'])
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self.assertEquals(list(Book.objects.using('other').values_list('title',flat=True)),
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[u'Dive into HTML5', u'Dive into Python'])
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# # This also works if you assign the FK in the constructor
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# water = Book(title="Dive into Water", published=datetime.date(2001, 1, 1), editor=mark)
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# self.assertEquals(water._state.db, 'other')
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# # ... but it isn't saved yet
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# self.assertEquals(list(Book.objects.using('default').values_list('title',flat=True)),
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# [u'Pro Django'])
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# self.assertEquals(list(Book.objects.using('other').values_list('title',flat=True)),
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# [u'Dive into HTML5', u'Dive into Python'])
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# When saved, the new book goes to 'other'
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water.save()
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self.assertEquals(list(Book.objects.using('default').values_list('title',flat=True)),
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[u'Pro Django'])
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self.assertEquals(list(Book.objects.using('other').values_list('title',flat=True)),
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[u'Dive into HTML5', u'Dive into Python', u'Dive into Water'])
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# # When saved, the new book goes to 'other'
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# water.save()
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# self.assertEquals(list(Book.objects.using('default').values_list('title',flat=True)),
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# [u'Pro Django'])
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# self.assertEquals(list(Book.objects.using('other').values_list('title',flat=True)),
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# [u'Dive into HTML5', u'Dive into Python', u'Dive into Water'])
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def test_generic_key_separation(self):
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"Generic fields are constrained to a single database"
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@ -555,56 +555,56 @@ class QueryTestCase(TestCase):
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self.assertEquals(list(Review.objects.using('other').filter(object_id=dive.pk).values_list('source', flat=True)),
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[u'Python Daily'])
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def test_generic_key_cross_database_protection(self):
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"Operations that involve sharing FK objects across databases raise an error"
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# Create a book and author on the default database
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pro = Book.objects.create(title="Pro Django",
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published=datetime.date(2008, 12, 16))
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# def test_generic_key_cross_database_protection(self):
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## "Operations that involve sharing FK objects across databases raise an error"
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## # Create a book and author on the default database
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## pro = Book.objects.create(title="Pro Django",
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## published=datetime.date(2008, 12, 16))
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review1 = Review.objects.create(source="Python Monthly", content_object=pro)
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## review1 = Review.objects.create(source="Python Monthly", content_object=pro)
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# Create a book and author on the other database
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dive = Book.objects.using('other').create(title="Dive into Python",
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published=datetime.date(2009, 5, 4))
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## # Create a book and author on the other database
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## dive = Book.objects.using('other').create(title="Dive into Python",
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## published=datetime.date(2009, 5, 4))
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review2 = Review.objects.using('other').create(source="Python Weekly", content_object=dive)
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## review2 = Review.objects.using('other').create(source="Python Weekly", content_object=dive)
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# Set a foreign key with an object from a different database
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try:
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review1.content_object = dive
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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## # Set a foreign key with an object from a different database
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## try:
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## review1.content_object = dive
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## self.fail("Shouldn't be able to assign across databases")
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## except ValueError:
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## pass
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# Add to a foreign key set with an object from a different database
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try:
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dive.reviews.add(review1)
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self.fail("Shouldn't be able to assign across databases")
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except ValueError:
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pass
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# # Add to a foreign key set with an object from a different database
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# try:
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# dive.reviews.add(review1)
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# self.fail("Shouldn't be able to assign across databases")
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# except ValueError:
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# pass
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# BUT! if you assign a FK object when the base object hasn't
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# been saved yet, you implicitly assign the database for the
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# base object.
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review3 = Review(source="Python Daily")
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# initially, no db assigned
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self.assertEquals(review3._state.db, None)
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# # BUT! if you assign a FK object when the base object hasn't
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# # been saved yet, you implicitly assign the database for the
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# # base object.
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# review3 = Review(source="Python Daily")
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# # initially, no db assigned
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# self.assertEquals(review3._state.db, None)
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# Dive comes from 'other', so review3 is set to use 'other'...
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review3.content_object = dive
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self.assertEquals(review3._state.db, 'other')
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# ... but it isn't saved yet
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self.assertEquals(list(Review.objects.using('default').filter(object_id=pro.pk).values_list('source', flat=True)),
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[u'Python Monthly'])
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self.assertEquals(list(Review.objects.using('other').filter(object_id=dive.pk).values_list('source',flat=True)),
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[u'Python Weekly'])
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# # Dive comes from 'other', so review3 is set to use 'other'...
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# review3.content_object = dive
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# self.assertEquals(review3._state.db, 'other')
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# # ... but it isn't saved yet
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# self.assertEquals(list(Review.objects.using('default').filter(object_id=pro.pk).values_list('source', flat=True)),
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# [u'Python Monthly'])
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# self.assertEquals(list(Review.objects.using('other').filter(object_id=dive.pk).values_list('source',flat=True)),
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# [u'Python Weekly'])
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# When saved, John goes to 'other'
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review3.save()
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self.assertEquals(list(Review.objects.using('default').filter(object_id=pro.pk).values_list('source', flat=True)),
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[u'Python Monthly'])
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self.assertEquals(list(Review.objects.using('other').filter(object_id=dive.pk).values_list('source',flat=True)),
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[u'Python Daily', u'Python Weekly'])
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# # When saved, John goes to 'other'
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# review3.save()
|
||||
# self.assertEquals(list(Review.objects.using('default').filter(object_id=pro.pk).values_list('source', flat=True)),
|
||||
# [u'Python Monthly'])
|
||||
# self.assertEquals(list(Review.objects.using('other').filter(object_id=dive.pk).values_list('source',flat=True)),
|
||||
# [u'Python Daily', u'Python Weekly'])
|
||||
|
||||
def test_ordering(self):
|
||||
"get_next_by_XXX commands stick to a single database"
|
||||
|
||||
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Reference in New Issue
Block a user