diff options
| -rw-r--r-- | django/db/backends/oracle/base.py | 20 |
1 files changed, 17 insertions, 3 deletions
diff --git a/django/db/backends/oracle/base.py b/django/db/backends/oracle/base.py index 83543969ea..b8bc6d00d5 100644 --- a/django/db/backends/oracle/base.py +++ b/django/db/backends/oracle/base.py @@ -26,12 +26,14 @@ from django.utils.encoding import smart_str, force_unicode DatabaseError = Database.Error IntegrityError = Database.IntegrityError + class DatabaseFeatures(BaseDatabaseFeatures): empty_fetchmany_value = () needs_datetime_string_cast = False uses_custom_query_class = True interprets_empty_strings_as_nulls = True + class DatabaseOperations(BaseDatabaseOperations): def autoinc_sql(self, table, column): # To simulate auto-incrementing primary keys in Oracle, we have to @@ -40,7 +42,17 @@ class DatabaseOperations(BaseDatabaseOperations): tr_name = get_trigger_name(table) tbl_name = self.quote_name(table) col_name = self.quote_name(column) - sequence_sql = 'CREATE SEQUENCE %s;' % sq_name + sequence_sql = """ + DECLARE + i INTEGER; + BEGIN + SELECT COUNT(*) INTO i FROM USER_CATALOG + WHERE TABLE_NAME = '%(sq_name)s' AND TABLE_TYPE = 'SEQUENCE'; + IF i = 0 THEN + EXECUTE IMMEDIATE 'CREATE SEQUENCE %(sq_name)s'; + END IF; + END; + /""" % locals() trigger_sql = """ CREATE OR REPLACE TRIGGER %(tr_name)s BEFORE INSERT ON %(tbl_name)s @@ -195,7 +207,7 @@ class DatabaseOperations(BaseDatabaseOperations): class DatabaseWrapper(BaseDatabaseWrapper): - + operators = { 'exact': '= %s', 'iexact': '= UPPER(%s)', @@ -212,7 +224,7 @@ class DatabaseWrapper(BaseDatabaseWrapper): } oracle_version = None - def __init__(self, *args, **kwargs): + def __init__(self, *args, **kwargs): super(DatabaseWrapper, self).__init__(*args, **kwargs) self.features = DatabaseFeatures() @@ -265,6 +277,7 @@ class DatabaseWrapper(BaseDatabaseWrapper): cursor.arraysize = 100 return cursor + class OracleParam(object): """ Wrapper object for formatting parameters for Oracle. If the string @@ -285,6 +298,7 @@ class OracleParam(object): else: self.input_size = None + class FormatStylePlaceholderCursor(Database.Cursor): """ Django uses "format" (e.g. '%s') style placeholders, but Oracle uses ":var" |