January 2007 - jboss-user - Jboss List Archives

[JBoss Seam] - Re: Seam, EJB3, POJOs, nested one to many relationships

by modoc

Yeah, I only thought of that after I made the initial post, it makes sense based on the behavior I'm seeing. It just doesn't seem right that I should have to define the entire user experience as a single conversation. I mean what if I need to have multiple conversations to allow multiple browsers/tabs? I may be spoiled by ATG Repositories, but why can't the persistence code simply fetch the data I need? It knows what object I'm working with and which object(s) I need. I guess I don't know enough about EJB3 sessions or something. I guess that's something I need to research more of and/or take up on the EJB3 forum. Anyhow, I can't be the only person with a hierarchy of data driving the majority of the user experience like this. Is the only answer to use a single user-session encompassing long running conversation? That or EAGER load everything into memory at the beginning (which still leaves me with my bag/indexcolumn issues)? Obviously I could also replace my nice simple EJB POJOs with "smarter" object that use the entityManager to populate themselves manually as needed, but that seems to be throwing away most of the POJO/annotation/EJB3 goodness. How have other people solved this type of issue? Regards, Modoc View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997284#3997284 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997284

19 years, 3 months

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[JBoss Seam] - Seam 1.1 nullifies member variables when it shouldn't

by andrew.rw.robinson

A circular call in Seam 1.1 causes null references to injected values. Circular call use case: @Name("a") | public class A { | @In(create=true) | private B b; | | public void doSomething(ActionEvent evt) { | b.thisWorks(); | b.nullPointerHere(); | } | | public void dummyMethod() {} @Name("b") | public class B { | @In(create=true) | private C c; | | public void thisWorks() { | c.callMe(); | } | | public void nullPointerHere() {} @Name("c") | public class C { | @In(create=true) | private A a; | | public void callMe() { | a.dummyMethod(); // this call causes A's member variables | // to be set to "null" | } There is no reason IMO that this should not be allowed. Seam incorrectly removes A's member variables despite the fact that there is an actively running method on the thread inside of A. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997283#3997283 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997283

19 years, 3 months

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[JBoss Seam] - Re: Value injection not always working with Seam 1.1

by andrew.rw.robinson

Please help! This is a crucial show stopping bug with 1.1. I am having null pointer exceptions all over my code (and not just with circular dependencies) because Seam keeps setting all of my member variables to null right in the middle of method calls! I haven't been able to pinpoint exactly what is causing it, but it always seems to happen when one bean calls another that has other beans injected. I'm not sure why the new version sets the members to null, but this is definately not "GA" stable code for us. Let me know what I can do to help troubleshoot this, but we need a solution ASAP as we are stuck needing functionality in 1.1 and only 1.0.1 is stable for us. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997282#3997282 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997282

19 years, 3 months

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[JBoss Seam] - Re: JDBC Transaction integration

by hstang

Good question. I am unsure if Seam provides a transactional session, but I wouldn't think it's too hard to do. Perhaps someone else more knowledgeable on this topic(no pun intended) can comment on this View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997281#3997281 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997281

19 years, 3 months

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[EJB 3.0] - Re: Exception thrown on EJB3.0_RC9_Patch1 and JBoss-4.0.5.GA

by gus888

Hi Wolfgang, It works after removing the two files (I use 'default' configuration). Thank you very much and happy new year! Gus View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997279#3997279 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997279

19 years, 3 months

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[JBoss Eclipse IDE (users)] - Re: Error in tutorial

by warfster

I was able to fix this problem by re-reading the tutorial and correcting the XDoclet tags in my ComputeServlet.java class. See the JBoss Eclipse IDE Tutorial, Procedure 6.1. HTTP Servlet Configuration regarding the XDoclet tags for this servlet. This also addressed the issue I had with the "javax.naming.NameNotFoundException: Fibo not bound" error. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997275#3997275 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997275

19 years, 3 months

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[Beginners Corner] - Client Jar

by VinceCallagan

Hello, The question may sounds stupid but : How can I make a client-jar and what to put it ? I have a stateless session bean with severals entity bean deployed on a server. I want a client (webapp) to access this SLSB with the entities in another WAR/EAR. Do I need to put only the interfaces ? what about the entities ? Thanks a lot View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997274#3997274 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997274

19 years, 3 months

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[JBoss Seam] - Re: JDBC Transaction integration

by flozanolopez

"hstang" wrote : JPA supports native named queries using @NamedNativeQuery annotation. You can use JDBC with this approach. | | It's an interesting approach, but what about the JMS transactions? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997273#3997273 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997273

19 years, 3 months

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[JBoss Seam] - Re: Seam, EJB3, POJOs, nested one to many relationships

by hstang

anonymous wrote : It happens as I have multiple pages to drill through the hierarchy. I.e., you login, pick the site you want to deal with, pick the flow you want to work with, etc... That maybe the problem. If you want to avoid LIE and support this kind of use-case, you need a long running conversation. Seam provides a managed persistence context for you that will also be long-running. Otherwise, you may have to do a em.merge() of the detached object in question to bring it back as managed to avoid LIE. Hope this helps. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997272#3997272 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997272

19 years, 3 months

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[JBoss Seam] - Re: How to get conversation ID in portlet

by norman.richards＠jboss.com

Does #{conversation.id} not work? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3997271#3997271 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3997271

19 years, 3 months

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jboss-user January 2007