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Replaced DatabaseCreation sql methods by schema editor equivalents 

Also used schema editor in migrate to sync unmigrated apps (sync_apps).
Refs #22340. Thanks Tim Graham for the review.
This commit is contained in:
Claude Paroz 2014-09-14 20:26:16 +02:00
parent 15ba0d166f
commit 30cbd5d360
6 changed files with 54 additions and 70 deletions
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64
django/core/management/commands/migrate.py
View File

@ -225,14 +225,12 @@ class Command(BaseCommand):
try:
# Get a list of already installed *models* so that references work right.
tables = connection.introspection.table_names(cursor)
seen_models = connection.introspection.installed_models(tables)
created_models = set()
pending_references = {}
# Build the manifest of apps and models that are to be synchronized
all_models = [
(app_config.label,
router.get_migratable_models(app_config, connection.alias, include_auto_created=True))
router.get_migratable_models(app_config, connection.alias, include_auto_created=False))
for app_config in apps.get_app_configs()
if app_config.models_module is not None and app_config.label in app_labels
]
@ -256,34 +254,27 @@ class Command(BaseCommand):
if self.verbosity >= 1:
self.stdout.write(" Creating tables...\n")
with transaction.atomic(using=connection.alias, savepoint=connection.features.can_rollback_ddl):
deferred_sql = []
for app_name, model_list in manifest.items():
for model in model_list:
# Create the model's database table, if it doesn't already exist.
if model._meta.proxy or not model._meta.managed:
continue
if self.verbosity >= 3:
self.stdout.write(
" Processing %s.%s model\n" % (app_name, model._meta.object_name)
)
sql, references = connection.creation.sql_create_model(model, no_style(), seen_models)
seen_models.add(model)
with connection.schema_editor() as editor:
if self.verbosity >= 1:
self.stdout.write(" Creating table %s\n" % model._meta.db_table)
editor.create_model(model)
deferred_sql.extend(editor.deferred_sql)
editor.deferred_sql = []
created_models.add(model)
for refto, refs in references.items():
pending_references.setdefault(refto, []).extend(refs)
if refto in seen_models:
sql.extend(
connection.creation.sql_for_pending_references(
refto, no_style(), pending_references,
)
)
sql.extend(
connection.creation.sql_for_pending_references(
model, no_style(), pending_references
)
)
if self.verbosity >= 1 and sql:
self.stdout.write(" Creating table %s\n" % model._meta.db_table)
for statement in sql:
cursor.execute(statement)
tables.append(connection.introspection.table_name_converter(model._meta.db_table))
if self.verbosity >= 1:
self.stdout.write(" Running deferred SQL...\n")
for statement in deferred_sql:
cursor.execute(statement)
finally:
cursor.close()
@ -321,31 +312,6 @@ class Command(BaseCommand):
" No custom SQL for %s.%s model\n" %
(app_name, model._meta.object_name)
)
if self.verbosity >= 1:
self.stdout.write(" Installing indexes...\n")
# Install SQL indices for all newly created models
for app_name, model_list in manifest.items():
for model in model_list:
if model in created_models:
index_sql = connection.creation.sql_indexes_for_model(model, no_style())
if index_sql:
if self.verbosity >= 2:
self.stdout.write(
" Installing index for %s.%s model\n" %
(app_name, model._meta.object_name)
)
savepoint = connection.features.can_rollback_ddl
try:
with transaction.atomic(using=connection.alias, savepoint=savepoint):
for sql in index_sql:
cursor.execute(sql)
except Exception as e:
self.stderr.write(
" Failed to install index for %s.%s model: %s\n" %
(app_name, model._meta.object_name, e)
)
finally:
cursor.close()

5
django/db/backends/creation.py
View File

@ -1,8 +1,10 @@
import hashlib
import sys
import time
import warnings
from django.conf import settings
from django.utils.deprecation import RemovedInDjango20Warning
from django.utils.encoding import force_bytes
from django.utils.six.moves import input
from django.utils.six import StringIO
@ -192,6 +194,9 @@ class BaseDatabaseCreation(object):
"""
Returns the CREATE INDEX SQL statements for a single model.
"""
warnings.warn("DatabaseCreation.sql_indexes_for_model is deprecated, "
"use the equivalent method of the schema editor instead.",
RemovedInDjango20Warning)
if not model._meta.managed or model._meta.proxy or model._meta.swapped:
return []
output = []

29
django/db/backends/schema.py
View File

@ -123,17 +123,18 @@ class BaseDatabaseSchemaEditor(object):
# Work out nullability
null = field.null
# If we were told to include a default value, do so
default_value = self.effective_default(field)
include_default = include_default and not self.skip_default(field)
if include_default and default_value is not None:
if self.connection.features.requires_literal_defaults:
# Some databases can't take defaults as a parameter (oracle)
# If this is the case, the individual schema backend should
# implement prepare_default
sql += " DEFAULT %s" % self.prepare_default(default_value)
else:
sql += " DEFAULT %s"
params += [default_value]
if include_default:
default_value = self.effective_default(field)
if default_value is not None:
if self.connection.features.requires_literal_defaults:
# Some databases can't take defaults as a parameter (oracle)
# If this is the case, the individual schema backend should
# implement prepare_default
sql += " DEFAULT %s" % self.prepare_default(default_value)
else:
sql += " DEFAULT %s"
params += [default_value]
# Oracle treats the empty string ('') as null, so coerce the null
# option whenever '' is a possible value.
if (field.empty_strings_allowed and not field.primary_key and
@ -247,6 +248,7 @@ class BaseDatabaseSchemaEditor(object):
autoinc_sql = self.connection.ops.autoinc_sql(model._meta.db_table, field.column)
if autoinc_sql:
self.deferred_sql.extend(autoinc_sql)
# Add any unique_togethers
for fields in model._meta.unique_together:
columns = [model._meta.get_field_by_name(field)[0].column for field in fields]
@ -258,7 +260,12 @@ class BaseDatabaseSchemaEditor(object):
"table": self.quote_name(model._meta.db_table),
"definition": ", ".join(column_sqls)
}
self.execute(sql, params)
if model._meta.db_tablespace:
tablespace_sql = self.connection.ops.tablespace_sql(model._meta.db_tablespace)
if tablespace_sql:
sql += ' ' + tablespace_sql
# Prevent using [] as params, in the case a literal '%' is used in the definition
self.execute(sql, params or None)
# Add any field index and index_together's (deferred as SQLite3 _remake_table needs it)
self.deferred_sql.extend(self._model_indexes_sql(model))

7
tests/backends/tests.py
View File

@ -111,9 +111,10 @@ class SQLiteTests(TestCase):
Check that auto_increment fields are created with the AUTOINCREMENT
keyword in order to be monotonically increasing. Refs #10164.
"""
statements = connection.creation.sql_create_model(models.Square,
style=no_style())
match = re.search('"id" ([^,]+),', statements[0][0])
with connection.schema_editor(collect_sql=True) as editor:
editor.create_model(models.Square)
statements = editor.collected_sql
match = re.search('"id" ([^,]+),', statements[0])
self.assertIsNotNone(match)
self.assertEqual('integer NOT NULL PRIMARY KEY AUTOINCREMENT',
match.group(1), "Wrong SQL used to create an auto-increment "

10
tests/commands_sql/tests.py
View File

@ -2,6 +2,7 @@ from __future__ import unicode_literals
import re
import unittest
import warnings
from django.apps import apps
from django.core.management.color import no_style
@ -10,6 +11,7 @@ from django.core.management.sql import (sql_create, sql_delete, sql_indexes,
from django.db import connections, DEFAULT_DB_ALIAS
from django.test import TestCase, override_settings
from django.utils import six
from django.utils.deprecation import RemovedInDjango20Warning
# See also initial_sql_regress for 'custom_sql_for_model' tests
@ -67,7 +69,9 @@ class SQLCommandsTestCase(TestCase):
def test_sql_indexes(self):
app_config = apps.get_app_config('commands_sql')
output = sql_indexes(app_config, no_style(), connections[DEFAULT_DB_ALIAS])
with warnings.catch_warnings():
warnings.simplefilter("ignore", category=RemovedInDjango20Warning)
output = sql_indexes(app_config, no_style(), connections[DEFAULT_DB_ALIAS])
# PostgreSQL creates one additional index for CharField
self.assertIn(self.count_ddl(output, 'CREATE INDEX'), [3, 4])
@ -79,7 +83,9 @@ class SQLCommandsTestCase(TestCase):
def test_sql_all(self):
app_config = apps.get_app_config('commands_sql')
output = sql_all(app_config, no_style(), connections[DEFAULT_DB_ALIAS])
with warnings.catch_warnings():
warnings.simplefilter("ignore", category=RemovedInDjango20Warning)
output = sql_all(app_config, no_style(), connections[DEFAULT_DB_ALIAS])
self.assertEqual(self.count_ddl(output, 'CREATE TABLE'), 3)
# PostgreSQL creates one additional index for CharField

9
tests/model_options/test_tablespaces.py
View File

@ -3,7 +3,6 @@ from __future__ import unicode_literals
from django.apps import apps
from django.conf import settings
from django.db import connection
from django.core.management.color import no_style
from django.test import TestCase, skipIfDBFeature, skipUnlessDBFeature
from .models.tablespaces import (Article, ArticleRef, Authors, Reviewers,
@ -11,13 +10,13 @@ from .models.tablespaces import (Article, ArticleRef, Authors, Reviewers,
def sql_for_table(model):
return '\n'.join(connection.creation.sql_create_model(model,
no_style())[0])
with connection.schema_editor(collect_sql=True) as editor:
editor.create_model(model)
return editor.collected_sql[0]
def sql_for_index(model):
return '\n'.join(connection.creation.sql_indexes_for_model(model,
no_style()))
return '\n'.join(connection.schema_editor()._model_indexes_sql(model))
# We can't test the DEFAULT_TABLESPACE and DEFAULT_INDEX_TABLESPACE settings