Thanks for clarification. Now that I am looking closer at the patch,
I think it is not that simple either.
Andrus
On Apr 19, 2007, at 10:30 PM, Kevin Menard wrote:
There are two things that come up.
1) Per my comment, I think we deliberately removed the ability to
auto-register with a DC. Perhaps that was a bad decision, perhaps
not.
Now that I've been prodded a bit, I'll try to dig up the proper
thread.
2) If we do decide that auto-registration may be a bad idea, then the
problem is a result of trying to associate two unregistered DOs. This
is something that needs to be addressed at a higher level and is
slated
for 3.0.x. It would be a big change to throw into a "stable" release.
--
Kevin
-----Original Message-----
From: Andrus Adamchik [mailto:[EMAIL PROTECTED]
Sent: Thursday, April 19, 2007 8:49 AM
To: [email protected]
Subject: Fwd: [JIRA] Commented: (CAY-763) XML Deserialization
fails on relationships when using a mapping file
Kevin,
I can apply the patch attached by Robert. Any objections?
(honestly I haven't spent much time lately looking into XML
serialization, so I will only run our existing test suite to
ensure it passes)
Andrus
Begin forwarded message:
From: "Robert Zeigler (JIRA)" <[email protected]>
Date: April 19, 2007 3:28:44 PM GMT+03:00
To: [EMAIL PROTECTED]
Subject: [JIRA] Commented: (CAY-763) XML Deserialization fails on
relationships when using a mapping file
[ https://issues.apache.org/cayenne/browse/CAY-763?
page=com.atlassian.jira.plugin.system.issuetabpanels:comment-
tabpanel#action_12292 ]
Robert Zeigler commented on CAY-763:
------------------------------------
Any progress on this front?
XML Deserialization fails on relationships when using a
mapping file
--------------------------------------------------------------------
Key: CAY-763
URL:
https://issues.apache.org/cayenne/browse/CAY-763
Project: Cayenne
Issue Type: Bug
Components: Cayenne Core Library
Affects Versions: 1.2 [STABLE], 2.0 [STABLE]
Environment: Any
Reporter: Robert Zeigler
Assigned To: Andrus Adamchik
Attachments: cay-763.patch
When XMLDecoder deserializes objects using a mapping
descriptor, no
objects are registered with a datacontext until after all objects
have been initialized. However, cayenne requires a non- null
datacontext to correctly handle relationships. Hence, dataobjects
using the default cayenne handling of relationships
(either to-one or
to-many) will be unable to deserialize objects from XML
(due to null
pointers).
In the case of a collection, the getXXX method will return
null, and
the XMLMappingDescriptor fails to "sense" a collection.
In the case of a to-one relationship, a NPE exception is thrown
trying to set the child property of the parent object.
The simplest way to fix this would be to make XMLMappingDescriptor
DataContext-capable (ie: will register objects with a
datacontext, if
one is provided, as the objects are created). I've done this in a
local copy of the code. I will attach a patch when I get a minute.
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