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From Craig L Russell <Craig.Russ...@Sun.COM>
Subject Minutes: JDO TCK Conference Call Friday, Sep 28 , 9 am PDT
Date Fri, 28 Sep 2007 17:20:23 GMT
Attendees: Michelle Caisse, Michael Bouschen, Craig Russell


1. Support for final modifier on fields. There are a few issues with  
making final fields persistent. First, the only difference between  
final and private is that final protects the class writer from  
accidentally changing the value of a final field; private protects  
the class writer from external code. Except in both cases, using  
reflection invalidates the protection. Second, the point at which the  
final field is modified by the jdo implementation would need to be  
carefully thought through. The final fields' values would have to be  
changed during specific life cycle events, such as retrieval from the  
datastore, flush, commit, rollback, etc. When exactly would the final  
fields be set? And how does this affect the memory model guarantees?

Bottom line: We'd like to see some more justification and discussion  
on the open questions raised above.

2. Test challenges. Some challenges have been filed by Ilan. Most  
have been fixed in 2.1 maintenance (trunk) and one of them is  
unresolved but can be fixed in the challenge resolution branch 2.0.1  
interim to a final fix in 2.1 maintenance.

Clarification: The 2.1 maintenance work is being done on the trunk.  
We created a 2.0.1 branch that has no API changes from 2.0 but has  
fixes for the tck where a specification clarification or API change  
would be needed to pass the tck. A compliant JDO 2.0 implementation  
should be able to pass the latest tck test in the 2.0.1 branch.

3. Other issues

http://issues.apache.org/jira/browse/JDO-534 Signature test doesn't  
work with JDK 6. Looks like the mechanism we use to check signatures  
has changed in an incompatible way from Java 5 to Java 6. Volunteer  
needed to check into this issue. It looks like the issue is running  
Java 5 jar files with Java 6 runtime. The signature test works fine  
if the api2 project is compiled with Java 6.

EvictAll: Michael created an issue http://issues.apache.org/jira/ 
browse/JDO-535 and updated the ChangeLog.

The tck2 currently fails due to database cleanup issues. Teardown  
fails. AI Michelle see if recently added tests have affected the  

Action Items from weeks past:

[Sep 14 2007] AI Matthew provide examples for jdoconfig.xml.

[June 22 2007] AI Craig discuss svn:eol-style on email.

[June 22 2007] AI Craig write a proposal on annotation overrides for   
the expert group.

[May 25 2007]  AI everyone Download the Grails demo from grails.org   
and check it out. Also look at Grails/Groovy ExpandoMetaClass that   
has the magic to avoid reflection and enhancement.

[May 25 2007] AI Matthew Adams prepare a proposal with just the   
basics of schema synchronization with jdo and orm metadata.

[May 18 2007] AI Craig update http://wiki.apache.org/jdo/  
CurrentDevelopment wiki page

[Apr 27 2007] AI Craig review Query API and send email to experts.

[Apr 27 2007] AI Erik file a JIRA regarding JPA style transactions   
and attach his discussion document to it.

[Mar 9 2007] AI Craig: Update the spec to require that the key of  
the  listener is the class name of the listener, for consistency  
with  proposed xml..

[Mar 2 2007] AI Craig: update the JDOHelper class to include a  
string  constant "META-INF/jdo.xml" and a new method   
getPersistenceManagerFactory taking no arguments.

[Aug 11 2006] AI Craig propose some semantics for behavior if user   
tries to add to a list where the ordering element is incorrect.

[Jul 14 2006] AI: Erik document 220 annotations that don't have a   
corresponding JDO concept.

[Jun 23 2006]  AI  Martin look at what Hibernate and TopLink support   
for Enum types. In progress.

[Apr 14 2006] AI Craig: update the roadmap for JDO. In progress.

[Nov 4 2005] AI Martin: Update Martin's wiki with discusion of JDK    
1.5 issues. In progress

[Sep 2 2005] AI: To recruit members, update the web site. Articles   
on  TheServerSide directing attention to the site. T-shirts, logo.     
AI:   Craig write a ServerSide article.

-- Michelle

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:Craig.Russell@sun.com
P.S. A good JDO? O, Gasp!

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