Commit 6b5a6076 authored by Matt Boersma's avatar Matt Boersma
Browse files

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

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
parent fbf09ee1

django/db/backends/oracle/base.py

+17 −3
Original line number Diff line number Diff line
@@ -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
@@ -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"