October 2006 - jboss-user - Jboss List Archives

[EJB 3.0] - Re: How to lazily load collections?

by michael.litherland

*sigh* Actually, I'm going to think outloud for a moment. If I have an entity EJB with, say, 20 fields, and I go with the flow and create a transfer object with a matching 20 fields I left with the tedious process of copying 20 fields back and forth every time I want to use the entity. Plus that's a bunch of changes that I have to make should I want to add or remove a field. What a pain! There has to a trick to dealing with these VO/TOs... View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978671#3978671 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978671

19 years, 8 months

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[EJB 3.0] - Re: How to lazily load collections?

by michael.litherland

Uh oh - exclamation points, now I *know* I'm doing something wrong. :) OK, without going too in depth here's the flow. I have a util class with static methods looking up the EJB3 stateless SBs: | Context c = new InitialContext(); | return (EntityLogicRemote) c.lookup("MyProject/EntityLogicBean/remote"); | There's a controller class that handles the JSF actions. It looks up the remote using the method above. It then looks up the entity it needs by it's ID, that code in the bean looks like this: | MyEntity entity = em.find(MyEntity.class, entityId); | return entity; | Of course that MyEntity is the EJB3 entity bean in question. I am, in fact directly referencing the returned object within my JSF class (which from your reply must be problematic). I do realize there are limitations in working with the object, so I've carefully coded those interactions. Initially I directly accessed that bean's getTdmAlerts method to get the TdmAlerts collection, which I wrapped in my DataModel (successfully before I made the relationship lazy). After I made it lazy and started getting exceptions I changed what I was doing. I currently am trying to pass the entity instance I get from the above method back to the session bean to refresh() it and get the TdmAlerts collection (which obviously fails with the same exception). Now, where I am at 8:35 PM localtime() is that instead of passing the entity back to the session bean I just pass the site ID and look it up again where (as you'd expect) the newly returned entity can give me it's TdmAlerts collection without a problem. So problem solved in one sense, but I really want to do things the Right Way. I appreciate greatly your help so far, can you give me guidance as to how I should structure my interactions between JSF and EJB3? When I decided to employ these technologies on the project (which has worked swimmingly so far) there was absolutely no documentation that I could find on the web of the "right way" to do things. So I punted and I got things working so the project could move forward. If I'm designing badly I'd rather know now and fix things than continue on only to run into significant problems later. Thanks again, Mike P.S. Before I submit this reply I'm going to guess at a method of doing things the "right way" and that would be that the JSF project should never interact with EJB entities at all and only with the EJB session beans. That would explain your VO/TO post, however I guess I'm still a bit lost at the concept of the proxy that you refer to. I do use transfer objects to, for example, create an entity from data that a user fills into a form. Thanks again. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978670#3978670 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978670

19 years, 8 months

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[EJB 3.0] - Re: EJb 3.0 primary key loose ?

by ojacobson

Try this: in the CustomerFacade: public Orders save(Orders orders) { | em.persist(orders); | return orders; | } Then your persist code looks like // make persistent | customer = customersFacade.save(customer); View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978668#3978668 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978668

19 years, 8 months

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[JBoss Messaging] - Re: JBoss Messaging server cannot connect to Remote Messagin

by ovidiu.feodorov＠jboss.com

We're currently debating what's the best way of going forward with Remoting (http://jira.jboss.org/jira/browse/JBMESSAGING-609). We'll publish the conclusion in a matter of days, you won't have to wait until Feb 07. We had problems integrating the multiplex support that's currently available in Remoting, so just replacing Remoting with the latest jar (by the way, 1.0.1.GA comes with the latest Remoting) won't help you, unfortunately. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978667#3978667 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978667

19 years, 8 months

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[EJB 3.0] - <jar-file> elements in persistence.xml

by ojacobson

Why does JBoss try to resolve jar files mentioned in persistence.xml relative to $JBOSS_HOME/bin? <persistence> | <persistence-unit name="ejb3-example"> | <jta-data-source>java:/DefaultDS</jta-data-source> | <jar-file>entities.jar</jar-file> | <properties> | <property name="hibernate.hbm2ddl.auto" value="create-drop"/> | </properties> | </persistence-unit> | </persistence> View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978666#3978666 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978666

19 years, 8 months

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[JBoss jBPM] - issue with jbpm.sar (hot deploy)

by wenbozhu

It doesn't seem to me that jbpm.sar is hot-deployable .. due to the embedded ehcache.jar (1.2.2 with AS 4.0.4), which fails to load any config xml after jbpm.sar is replaced. And if this is the case, then ehcache.jar should be deployed under "lib". However, I do like a self-contained sar (to ease deployment), and wonder if anyone has other expriences or work-arounds. I'd tried to extend jbmp.sar a bit to support dynamic db-schema creation. Thanks. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978665#3978665 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978665

19 years, 8 months

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[EJB/JBoss] - Re: StatelessSession -> DAO leaves open transactions

by wcydaip

Help!! Sal, I'm dyin over here. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978664#3978664 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978664

19 years, 8 months

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[JBossWS] - JWSDP 2.0 with JBoss 4.0.4 ?

by hamptont

When using JBoss 4.0.3SP1 I used JWSDP 2.0 to generate the ties for my webservice. I would like to upgrade to using JBoss 4.0.4. When I deploy this same web service built, using JWSDP to JBoss 4.0.4, I get the following WARNINGS. The web service works, but these warnings concern me. 17:47:27,822 WARN [PortComponentMetaData] <wsdl-port> element in webservices.xml not namespace qualified: MyWSPort | 17:47:29,593 WARN [WSDL11Reader] Encoding style 'http://schemas.xmlsoap.org/soap/encoding/' not supported for: {http://myws.my.com/}getDBList | 17:47:29,594 WARN [WSDL11Reader] Encoding style 'http://schemas.xmlsoap.org/soap/encoding/' not supported for: {http://myws.my.com/}processBlastJob Do I need to stop using JWSDP and use the wstool that comes with JBoss ? View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978654#3978654 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978654

19 years, 8 months

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[EJB/JBoss] - Persistence of ejb timers

by balteo

Hello, I am trying for my ejb timers to survive a server restart. I have this: | <enterprise-beans> | <session> | <ejb-name>TimerSessionBean</ejb-name> | <jndi-name>TimerSessionBean</jndi-name> | <timer-persistence>true</timer-persistence> | </session> | </enterprise-beans> | | However if I restart the server the timers are no longer executed. Can anyone help please? Thanks in advance, Julien Martin. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978648#3978648 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978648

19 years, 8 months

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[EJB 3.0] - Re: Local and Remote interfaces required in EJB3

by bill.burke＠jboss.com

anonymous wrote : | Wouldn't this be enough information for creating the client interface: | Um, with Intellij or Eclipse, its really easy to extract an interface. So instead of typing @LocalMethod, just let your ide create an interface for you. Easier, less typing. View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3978647#3978647 Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3978647

19 years, 8 months

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jboss-user October 2006