some fixes

Author: daimor

.gitignore

@@ -1 +1,101 @@
-__pycache__
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+.hypothesis/
+.pytest_cache/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# pyenv
+.python-version
+
+# celery beat schedule file
+celerybeat-schedule
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/

django_iris/base.py

@@ -3,18 +3,16 @@
 from django.db.backends.base.creation import BaseDatabaseCreation
 from django.core.exceptions import ImproperlyConfigured
 from django.utils.asyncio import async_unsafe
-from django.utils.functional import cached_property
 
 from .introspection import DatabaseIntrospection
 from .features import DatabaseFeatures
 from .schema import DatabaseSchemaEditor
 from .operations import DatabaseOperations
 from .cursor import CursorWrapper
-
-from django.db import DataError
+from .creation import DatabaseCreation
+from .validation import DatabaseValidation
 
 import iris as Database
-import traceback
 
 
 Database.Warning = type("StandardError", (object,), {})
@@ -39,11 +37,6 @@ class DatabaseClient(BaseDatabaseClient):
     runshell = ignore
 
 
-class DatabaseCreation(BaseDatabaseCreation):
-    create_test_db = ignore
-    destroy_test_db = ignore
-
-
 class DatabaseWrapper(BaseDatabaseWrapper):
     vendor = 'interystems'
     display_name = 'InterSystems IRIS'
@@ -65,7 +58,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
         'BigIntegerField': 'BIGINT',
         'IPAddressField': 'CHAR(15)',
         'GenericIPAddressField': 'CHAR(39)',
-        'JSONField': 'json',
+        'JSONField': 'VARCHAR(32768)',
         'OneToOneField': 'INTEGER',
         'PositiveBigIntegerField': 'BIGINT',
         'PositiveIntegerField': 'INTEGER',
@@ -114,6 +107,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
     features_class = DatabaseFeatures
     introspection_class = DatabaseIntrospection
     ops_class = DatabaseOperations
+    validation_class = DatabaseValidation
 
     def get_connection_params(self):
         settings_dict = self.settings_dict
@@ -169,7 +163,7 @@ def get_new_connection(self, conn_params):
         return Database.connect(**conn_params)
 
     def init_connection_state(self):
-        assignments = []
+        pass
 
     @async_unsafe
     def create_cursor(self, name=None):

django_iris/creation.py

@@ -0,0 +1,7 @@
+from django.db.backends.base.creation import BaseDatabaseCreation
+
+
+class DatabaseCreation(BaseDatabaseCreation):
+
+    def _execute_create_test_db(self, cursor, parameters, keepdb=False):
+      pass

django_iris/features.py

@@ -7,8 +7,11 @@ class DatabaseFeatures(BaseDatabaseFeatures):
     has_bulk_insert =  False
     has_native_uuid_field =  False
     supports_timezones = False
-    uses_savepoints = False
     can_clone_databases =  False
     test_db_allows_multiple_connections = False
     supports_unspecified_pk =  False
     can_return_columns_from_insert = False
+
+    supports_column_check_constraints = False
+    supports_table_check_constraints = False
+    can_introspect_check_constraints = False

django_iris/iris.py

@@ -6,7 +6,9 @@
 
 class DatabaseOperations(BaseDatabaseOperations):
     def quote_name(self, name):
-        return name
+        if name.startswith('"') and name.endswith('"'):
+            return name  # Quoting once is enough.
+        return '"%s"' % name
 
     def adapt_datetimefield_value(self, value):
         if value is None:

django_iris/operations.py

@@ -1,7 +1,7 @@
 from decimal import Decimal
 
 from django.db.backends.base.schema import BaseDatabaseSchemaEditor
-
+from django.db import NotSupportedError
 
 class DatabaseSchemaEditor(BaseDatabaseSchemaEditor):
     sql_alter_column_type = "ALTER COLUMN %(column)s %(type)s"
@@ -20,3 +20,10 @@ def quote_value(self, value):
 
     def prepare_default(self, value):
         raise NotImplementedError()
+
+    def table_sql(self, model):
+        if '.' in model._meta.db_table:
+            raise NotSupportedError(
+                "Invalid table name '%s'" % (model._meta.db_table)
+            )
+        return super().table_sql(model)

django_iris/schema.py

@@ -0,0 +1,8 @@
+from django.db.backends.base.validation import BaseDatabaseValidation
+
+class DatabaseValidation(BaseDatabaseValidation):
+    def check(self, **kwargs):
+        return []
+
+    def check_field(self, field, **kwargs):
+        return []