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Fixed #7628 -- Oracle backend won't try to recreate existing sequences during syncdb. Thanks, cmarshal. 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@8522 bcc190cf-cafb-0310-a4f2-bffc1f526a37
This commit is contained in:
Matt Boersma 2008-08-24 20:16:56 +00:00
parent fbf09ee11d
commit 6b5a607606
1 changed files with 17 additions and 3 deletions
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16
django/db/backends/oracle/base.py
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@ -26,12 +26,14 @@ from django.utils.encoding import smart_str, force_unicode
DatabaseError = Database.Error DatabaseError = Database.Error
IntegrityError = Database.IntegrityError IntegrityError = Database.IntegrityError
class DatabaseFeatures(BaseDatabaseFeatures): class DatabaseFeatures(BaseDatabaseFeatures):
empty_fetchmany_value = () empty_fetchmany_value = ()
needs_datetime_string_cast = False needs_datetime_string_cast = False
uses_custom_query_class = True uses_custom_query_class = True
interprets_empty_strings_as_nulls = True interprets_empty_strings_as_nulls = True
class DatabaseOperations(BaseDatabaseOperations): class DatabaseOperations(BaseDatabaseOperations):
def autoinc_sql(self, table, column): def autoinc_sql(self, table, column):
# To simulate auto-incrementing primary keys in Oracle, we have to # To simulate auto-incrementing primary keys in Oracle, we have to
@ -40,7 +42,17 @@ class DatabaseOperations(BaseDatabaseOperations):
tr_name = get_trigger_name(table) tr_name = get_trigger_name(table)
tbl_name = self.quote_name(table) tbl_name = self.quote_name(table)
col_name = self.quote_name(column) 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 = """ trigger_sql = """
CREATE OR REPLACE TRIGGER %(tr_name)s CREATE OR REPLACE TRIGGER %(tr_name)s
BEFORE INSERT ON %(tbl_name)s BEFORE INSERT ON %(tbl_name)s
@ -265,6 +277,7 @@ class DatabaseWrapper(BaseDatabaseWrapper):
cursor.arraysize = 100 cursor.arraysize = 100
return cursor return cursor
class OracleParam(object): class OracleParam(object):
""" """
Wrapper object for formatting parameters for Oracle. If the string Wrapper object for formatting parameters for Oracle. If the string
@ -285,6 +298,7 @@ class OracleParam(object):
else: else:
self.input_size = None self.input_size = None
class FormatStylePlaceholderCursor(Database.Cursor): class FormatStylePlaceholderCursor(Database.Cursor):
""" """
Django uses "format" (e.g. '%s') style placeholders, but Oracle uses ":var" Django uses "format" (e.g. '%s') style placeholders, but Oracle uses ":var"