I haven't read that blog post, but I do know that Spring treats @PersistenceContext differently than an EJB container. If you've configured everything within applicationContext.xml, rather than in the AppServer, and if you are extending JpaDaoSupport then I would think it should work properly. I will check it out tonight if I get a chance.
-Wes On Wed, Mar 18, 2009 at 1:39 PM, Musachy Barroso <[email protected]> wrote: > I had no idea it was not thread safe, in that case it is probably a > good idea to get factory and create an entity manager every time. > > musachy > > On Wed, Mar 18, 2009 at 1:30 PM, Burton Rhodes <[email protected]> wrote: >> I set up the example for "Struts 2 + Spring 2 + JPA + AJAX" using the >> OpenEntityManagerInViewFilter from the Struts website and all works >> well. (http://struts.apache.org/2.0.14/docs/struts-2-spring-2-jpa-ajax.html). >> It appears this example uses the @PersistenceContext annotation to >> inject the EntityManger into each Service/Dao class... >> >> Then I read this blog about how you SHOULD NOT use @PersistenceContext >> annotation in a webapp becasue of thread safety unless you implement a >> SingleThreadModel. >> >> http://weblogs.java.net/blog/ss141213/archive/2005/12/dont_use_persis_1.html >> >> Now I am confused... Should I instead use @PersistenceUnit to inject >> the EntityManagerFactor into each Dao object? And if so, won't this >> affect the OpenEntityManagerInViewFilter and cause Lazy exceptions? >> Can someone shead some light on this for me or am I not understanding >> this correctly? >> >> Apologies in advance if this is a bit off Struts topic... >> >> Thanks, >> Burton >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: [email protected] >> For additional commands, e-mail: [email protected] >> >> > > > > -- > "Hey you! Would you help me to carry the stone?" Pink Floyd > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > -- Wes Wannemacher Author - Struts 2 In Practice Includes coverage of Struts 2.1, Spring, JPA, JQuery, Sitemesh and more http://www.manning.com/wannemacher --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
