[jboss-user] [JBoss Seam] - Re: EntityHome silently discards updates after errors

[cja987]

I still can't explain the mysterious breakage that started when using another entityManager, but it went away when I switched from a javabean to a SFSB, something I was going to do eventually anyway.  I was still seeing dirty data, but I found it was the database I was using -- it looks like HSQLDB only supports Read Uncommitted isolation (it really shouldn't be called isolation at all).  Obviously I was going to switch out DB's too ..  I guess the moral of the story is to develop for the platform you expect to use sooner rather than later.

If I ever puzzle this out, I'll try submitting a wiki as an example application -- it's the simplest real-world app I can think of where you'd want uniqueness and concurrency control with "retry" options in the UI.


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