I have no idea :) musachy
On Wed, Mar 18, 2009 at 1:52 PM, Burton Rhodes <burtonrho...@gmail.com> wrote: > Any thoughts on how this would affect the > OpenEntityManagerInViewFilter? I assume if you create a new EM for > each service/dao operation, the objects would become detached after > each method thus giving you a lazy exception for anything in the view > - rendering the OpenEntityManagerInViewFilter useless. Am I > understanding this correctly? > > On Wed, Mar 18, 2009 at 12:39 PM, Musachy Barroso <musa...@gmail.com> 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 <burtonrho...@gmail.com> >> 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: user-unsubscr...@struts.apache.org >>> For additional commands, e-mail: user-h...@struts.apache.org >>> >>> >> >> >> >> -- >> "Hey you! Would you help me to carry the stone?" Pink Floyd >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: user-unsubscr...@struts.apache.org >> For additional commands, e-mail: user-h...@struts.apache.org >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: user-unsubscr...@struts.apache.org > For additional commands, e-mail: user-h...@struts.apache.org > > -- "Hey you! Would you help me to carry the stone?" Pink Floyd --------------------------------------------------------------------- To unsubscribe, e-mail: user-unsubscr...@struts.apache.org For additional commands, e-mail: user-h...@struts.apache.org
