-
Archives
- May 2018
- July 2017
- June 2017
- May 2017
- April 2017
- November 2016
- June 2016
- May 2016
- April 2016
- December 2015
- July 2015
- June 2015
- March 2015
- April 2014
- August 2013
- June 2013
- April 2013
- February 2013
- January 2013
- July 2012
- November 2011
- August 2011
- March 2011
- February 2011
- January 2011
- November 2010
- July 2010
- June 2010
- April 2010
- March 2010
- January 2010
- November 2009
- April 2009
- February 2009
- January 2009
- October 2008
-
Meta
Monthly Archives: June 2010
JDO Typesafe Refactorable Queries
One of the primary drawbacks with current JDO queries is that they are string-based, so you are hardcoding field names etc. When you refactor a (model) class, the field names are left unchanged, so the query no longer works. Some … Continue reading
Posted in JDO, JDOQL
8 Comments
Persisting multisets (bags) with DataNucleus
A multiset is a set where you can have a particular object multiple times in the set (a normal java.util Set will remove dups). This is also known by some as a “bag”. Google’s Collections library has such a container … Continue reading
Posted in JDO, JPA, Persistence
Leave a comment
