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[wolnelektury.git] / apps / south / db / mysql.py

diff --git a/apps/south/db/mysql.py b/apps/south/db/mysql.py
index c3659fc..a05c071 100644 (file)
--- a/apps/south/db/mysql.py
+++ b/apps/south/db/mysql.py
@@ -1,5 +1,6 @@
 
 from django.db import connection
+from django.conf import settings
 from south.db import generic
 
 class DatabaseOperations(generic.DatabaseOperations):
@@ -11,9 +12,20 @@ class DatabaseOperations(generic.DatabaseOperations):
     alter_string_set_type = ''
     alter_string_set_null = 'MODIFY %(column)s %(type)s NULL;'
     alter_string_drop_null = 'MODIFY %(column)s %(type)s NOT NULL;'
+    drop_index_string = 'DROP INDEX %(index_name)s ON %(table_name)s'
+    allows_combined_alters = False
+    has_ddl_transactions = False
+    
+    def execute(self, sql, params=[]):
+        if hasattr(settings, "DATABASE_STORAGE_ENGINE") and \
+           settings.DATABASE_STORAGE_ENGINE:
+            generic.DatabaseOperations.execute(self, "SET storage_engine=%s;" %
+                settings.DATABASE_STORAGE_ENGINE)
+        return generic.DatabaseOperations.execute(self, sql, params)
+    execute.__doc__ = generic.DatabaseOperations.execute.__doc__
 
     def rename_column(self, table_name, old, new):
-        if old == new:
+        if old == new or self.dry_run:
             return []
         
         qn = connection.ops.quote_name
@@ -27,17 +39,22 @@ class DatabaseOperations(generic.DatabaseOperations):
             qn(table_name),
             qn(old),
             qn(new),
-            "%s %s %s %s %s" % (
-                rows[0][1],
-                rows[0][2] == "YES" and "NULL" or "NOT NULL",
-                rows[0][3] == "PRI" and "PRIMARY KEY" or "",
-                rows[0][4] and "DEFAULT %s" % rows[0][4] or "",
-                rows[0][5] or "",
-            ),
+            rows[0][1],
+            rows[0][2] == "YES" and "NULL" or "NOT NULL",
+            rows[0][3] == "PRI" and "PRIMARY KEY" or "",
+            rows[0][4] and "DEFAULT " or "",
+            rows[0][4] and "%s" or "",
+            rows[0][5] or "",
         )
-        self.execute('ALTER TABLE %s CHANGE COLUMN %s %s %s;' % params)
-
-
+        
+        sql = 'ALTER TABLE %s CHANGE COLUMN %s %s %s %s %s %s %s %s;' % params
+        
+        if rows[0][4]:
+            self.execute(sql, (rows[0][4],))
+        else:
+            self.execute(sql)
+    
+    
     def rename_table(self, old_table_name, table_name):
         """
         Renames the table 'old_table_name' to 'table_name'.
@@ -47,4 +64,4 @@ class DatabaseOperations(generic.DatabaseOperations):
             return
         qn = connection.ops.quote_name
         params = (qn(old_table_name), qn(table_name))
-        self.execute('RENAME TABLE %s TO %s;' % params)
\ No newline at end of file
+        self.execute('RENAME TABLE %s TO %s;' % params)