Thanks, Jacek--we worked this out, but it's good to have the answer on the list for others.
My final strategy was NOT to place a persistence.xml file in my component library JARs at all. I instead let the client application determine how the persistence unit and data sources are set up. It works out very well. Cheers, -- Alexander On Jan 5, 2008 3:47 AM, Jacek Laskowski <[EMAIL PROTECTED]> wrote: > On Dec 13, 2007 4:22 AM, Alexander Saint Croix > <[EMAIL PROTECTED]> wrote: > > > I wonder whether there is any way for me to NOT include the <provider> > and > > <properties> elements defining the persistence provider implementation, > > connection URL, connection driver name, username and password in the > > persistence.xml file for my entity/POJO jar (the one inside of > WEB-INF/lib), > > but rather configure that specific portion of the persistence.xml file > > inside of the context of the application that is using these beans? It > > doesn't seem to be any of the POJO JAR's business what type of > persistence > > provider is being used to persist its contents. > > It's been a while since you wrote it, but I thought I'd jump in and > add a little. > > Simple answer is NO - you can't. It's because that's the main goal of > a ejb container to manage all what needs to be managed, e.g. jpa > entity managers. When <provider> is left out it means you rely on the > default jpa provider of a ejb container. <properties> are not required > at all and are to configure parameters that are specific to a given > jpa provider. Your persistence.xml file could look as follows: > > <persistence xmlns="http://java.sun.com/xml/ns/persistence"; version="1.0"> > <persistence-unit name="example" /> > </persistence> > > All other elements and attributes are optional. You won't be able to > override the values from persistence.xml file unless you do the job of > an ejb container, i.e. you get your hands dirty managing jpa objects, > like jpa entity manager factory and its entity managers. > > Jacek > > -- > Jacek Laskowski > http://www.JacekLaskowski.pl >
