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From Craig L Russell <Craig.Russ...@Sun.COM>
Subject Minutes: JDO TCK Conference Call Friday, June 26, 9 am PDT
Date Fri, 26 Jun 2009 16:40:13 GMT
Attendees: Michelle Caisse, Michael Bouschen, Craig Russell

Agenda:

1. M2 build process doesn't put correct MANIFEST.MF in jar file https://issues.apache.org/jira/browse/JDO-634

Looks like it's easy to generate OSGi information in the manifest by  
using the felix plugin. Anything besides the OSGi missing?

2. List.get(int) support in JDOQL is missing https://issues.apache.org/jira/browse/JDO-633

The change to the specification is one line. Implementation in the RI  
sounds straightforward. I'd say it's too late for JDO 2.3 but it can  
be implemented and tested with DataNucleus and considered for a future  
update.

3. Other issues

http://issues.apache.org/jira/browse/JDO-623 How to create a query  
that is "guaranteed" to run slow enough that another thread can cancel  
it? Perhaps something like this would work: "SELECT AVG(t0.c1 + t1.c1  
+ t2.c1) FROM t0, t1, t2" where t0, t1, and t2 are simply tables with  
columns c0 INT, c1 INT. With a relatively small number of rows (100)  
you would have the query do an outer join of 100 * 100 * 100 rows  
(1,000,000 rows). If the optimizer can calculate the average by  
itself, you might add "WHERE t0.c1 > 1 AND t0.c1 < 1000"  to avoid the  
optimization.

Action Items from weeks past:

[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.

-- Michelle







































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


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