[ZODB-Dev] InvalidObjectReference at commit

[Christian Reis]

We ran into problems today while committing objects that held references
to objects in other connections. The following patch was quite useful in
helping us find out what was wrong; we just looked at what references
the object held and their _p_jars.

Is it something that would be appreciated in the tree?

Index: Connection.py
===================================================================
RCS file: /cvs-repository/ZODB3/ZODB/Connection.py,v
retrieving revision 1.91
diff -u -r1.91 Connection.py
--- Connection.py	23 Apr 2003 20:36:02 -0000	1.91
+++ Connection.py	9 May 2003 12:36:28 -0000
@@ -18,7 +18,8 @@
 from __future__ import nested_scopes
 
 from cPickleCache import PickleCache
-from POSException import ConflictError, ReadConflictError, TransactionError
+from POSException import ConflictError, ReadConflictError, TransactionError, \
+                         InvalidObjectReference
 from ExtensionClass import Base
 import ExportImport, TmpStore
 from zLOG import LOG, ERROR, BLATHER, WARNING
@@ -419,7 +435,14 @@
             seek(0)
             clear_memo()
             dump((klass,args))
-            dump(state)
+            try:
+                dump(state)
+            except InvalidObjectReference, e:
+                msg = ("While committing %s (oid %s) the connection %s "
+                       "raised an InvalidObjectReference: %s" 
+                       % (object, `oid`, self, e) )
+                LOG('ZODB', ERROR, msg)
+                raise
             p=file(1)
             s=dbstore(oid,serial,p,version,transaction)
             self._store_count = self._store_count + 1

Take care,
--
Christian Reis, Senior Engineer, Async Open Source, Brazil.
http://async.com.br/~kiko/ | [+55 16] 261 2331 | NMFL