[SQLObject] Bug with cache = None

[Nils D. <gma...@xo...>]

Hi,

SQLObject 0.5.1 has an error when the connection uses "cache": None.
Calling destroySelf() on an object triggers this exception:

  File "/home/nde/.www/pdms/Pages.py", line 542, in handleForm
    self.obj.destroySelf()

  File "/home/nde/dev/pdms/libs/SQLObject/SQLObject.py", line 1014, in
destroySelf    
    self._connection.cache.expire(self.id, self.__class__)

  File "/home/nde/dev/pdms/libs/SQLObject/Cache.py", line 186, in expire
    self.caches[cls.__name__].expire(id)

  File "/home/nde/dev/pdms/libs/SQLObject/Cache.py", line 138, in expire
    if self.cache.has_key(id):

AttributeError: 'CacheFactory' object has no attribute 'cache'

this small path fixes it for me:
--- Cache.py.old        Tue Jan 20 18:31:51 2004
+++ Cache.py    Tue Jan 20 18:31:57 2004
@@ -40,8 +40,7 @@
         self.cullFraction = cullFraction
         self.doCache = cache
 
-        if self.doCache:
-            self.cache = {}
+        self.cache = {}
         self.expiredCache = {}
         self.lock = threading.Lock()

Regards
  Nils Decker