Re: Query by Criteria

2009-07-01 Thread Andy Jefferson
Are there any plans to add Query by Criteria to the JDO standard? I'm referring to a programmatic API to build queries, similar to what Hibernate already has and JPA is planning to add. If not, does anyone know of another route to achieving this functionality? Are there any libraries that

Re: PersistenceManagerFactory configuration for flat-file database

2009-05-20 Thread Andy Jefferson
I will look at DataNucleus to see if it supports plain simple flat-file DB. I dunno what is simple flat file DB, and don't really like the idea of inventing our own DB (there must be enough DB's around already :-) ), so if we reuse existing ones there are, at least, * HSQLDB option that David

Re: Delete by query

2007-07-31 Thread Andy Jefferson
That would make sense to me as well. I indeed want the entries in the PAGE table to remain there. I also thought there should be no need in the .orm file to specify anything specific (like a cascade delete) in order to have the corresponding entries in BOOK_PAGE being deleted as well,