seam cannot reference EJB, why?| JBoss.org Content Archive (Read Only)

15. Re: seam cannot reference EJB, why?

hsiung Apr 28, 2007 2:14 PM (in response to hsiung)

here is the startup log in which Seam scans the ejb jar:

20:03:09,933 INFO [ServletContextListener] Welcome to Seam 1.2.1
20:03:09,953 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/./tmp/deploy/tmp1148FBN-app.ear-contents/FBN-JSF-exp.war/WEB-INF/lib/jboss-s
eam.jar
20:03:10,033 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/tmp/deploy/tmp1148FBN-app.ear-contents/jboss-seam.jar
20:03:10,083 INFO [Initialization] Namespace: http://jboss.com/products/seam/security, package: org.jboss.seam.security, prefix: org.jboss.seam.secur
ity
20:03:10,083 INFO [Initialization] Namespace: http://jboss.com/products/seam/drools, package: org.jboss.seam.drools, prefix: org.jboss.seam.drools
20:03:10,083 INFO [Initialization] Namespace: http://jboss.com/products/seam/mail, package: org.jboss.seam.mail, prefix: org.jboss.seam.mail
20:03:10,083 INFO [Initialization] Namespace: http://jboss.com/products/seam/web, package: org.jboss.seam.web, prefix: org.jboss.seam.web
20:03:10,083 INFO [Initialization] Namespace: http://jboss.com/products/seam/theme, package: org.jboss.seam.theme, prefix: org.jboss.seam.theme
20:03:10,083 INFO [Initialization] Namespace: http://jboss.com/products/seam/jms, package: org.jboss.seam.jms, prefix: org.jboss.seam.jms
20:03:10,083 INFO [Initialization] Namespace: http://jboss.com/products/seam/framework, package: org.jboss.seam.framework, prefix: org.jboss.seam.cor
e.framework
20:03:10,093 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/tmp/deploy/tmp1148FBN-app.ear-contents/jboss-seam-debug.jar
20:03:10,093 INFO [Scanner] scanning: D:\opt\jboss-4.0.5\server\default\.\tmp\deploy\tmp1148FBN-app.ear-contents\FBN-JSF-exp.war\WEB-INF\classes
20:03:10,093 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/./tmp/deploy/tmp1148FBN-app.ear-contents/FBN-JSF-exp.war/WEB-INF/lib/jboss-s
eam-ui.jar
20:03:10,093 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/./tmp/deploy/tmp1148FBN-app.ear-contents/FBN-JSF-exp.war/WEB-INF/lib/jboss-s
eam-debug.jar
20:03:10,093 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/tmp/deploy/tmp1148FBN-app.ear-contents/FBN-EJB.jar
20:03:10,103 INFO [Initialization] reading /WEB-INF/components.xml
20:03:10,233 INFO [Initialization] reading jar:file:/D:/opt/jboss-4.0.5/server/default/tmp/deploy/tmp1148FBN-app.ear-contents/jboss-seam.jar!/META-IN
F/components.xml
20:03:10,253 INFO [Initialization] reading jar:file:/D:/opt/jboss-4.0.5/server/default/./tmp/deploy/tmp1148FBN-app.ear-contents/FBN-JSF-exp.war/WEB-I
NF/lib/jboss-seam.jar!/META-INF/components.xml
20:03:10,253 INFO [Initialization] reading properties from: /seam.properties
20:03:10,263 INFO [Initialization] reading properties from: /jndi.properties
20:03:10,263 INFO [Initialization] initializing Seam
20:03:10,313 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/tmp/deploy/tmp1148FBN-app.ear-contents/jboss-seam-debug.jar
20:03:10,734 INFO [Scanner] scanning: D:\opt\jboss-4.0.5\server\default\.\tmp\deploy\tmp1148FBN-app.ear-contents\FBN-JSF-exp.war\WEB-INF\classes
20:03:10,744 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/./tmp/deploy/tmp1148FBN-app.ear-contents/FBN-JSF-exp.war/WEB-INF/lib/jboss-s
eam-ui.jar
20:03:11,084 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/./tmp/deploy/tmp1148FBN-app.ear-contents/FBN-JSF-exp.war/WEB-INF/lib/jboss-s
eam-debug.jar
20:03:11,094 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/tmp/deploy/tmp1148FBN-app.ear-contents/FBN-EJB.jar
20:03:11,174 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/./tmp/deploy/tmp1148FBN-app.ear-contents/FBN-JSF-exp.war/WEB-INF/lib/jboss-s
eam.jar
20:03:12,777 INFO [Scanner] scanning: /D:/opt/jboss-4.0.5/server/default/tmp/deploy/tmp1148FBN-app.ear-contents/jboss-seam.jar
20:03:13,838 INFO [Initialization] two components with same name, higher precedence wins: org.jboss.seam.security.identity
20:03:13,888 INFO [Initialization] two components with same name, higher precedence wins: org.jboss.seam.persistence.persistenceProvider
20:03:13,908 INFO [Component] Component: org.jboss.seam.core.init, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.Init
20:03:14,048 INFO [Initialization] Installing components...
20:03:14,069 INFO [Component] Component: org.jboss.seam.core.applicationContext, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.Appl
icationContext
20:03:14,069 INFO [Component] Component: org.jboss.seam.core.businessProcessContext, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.
BusinessProcessContext
20:03:14,079 INFO [Component] Component: org.jboss.seam.core.conversation, scope: CONVERSATION, type: JAVA_BEAN, class: org.jboss.seam.core.Conversat
ion
20:03:14,649 INFO [Component] Component: org.jboss.seam.core.conversationContext, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.Con
versationContext
20:03:14,649 INFO [Component] Component: org.jboss.seam.core.conversationEntries, scope: SESSION, type: JAVA_BEAN, class: org.jboss.seam.core.Convers
ationEntries
20:03:14,649 INFO [Component] Component: org.jboss.seam.core.conversationList, scope: PAGE, type: JAVA_BEAN, class: org.jboss.seam.core.ConversationL
ist
20:03:14,649 INFO [Component] Component: org.jboss.seam.core.conversationStack, scope: PAGE, type: JAVA_BEAN, class: org.jboss.seam.core.Conversation
Stack
20:03:14,649 INFO [Component] Component: org.jboss.seam.core.eventContext, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.EventConte
xt
20:03:14,659 INFO [Component] Component: org.jboss.seam.core.events, scope: STATELESS, type: JAVA_BEAN, class: org.jboss.seam.core.Events
20:03:14,659 INFO [Component] Component: org.jboss.seam.core.exceptions, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.Exceptions
20:03:14,669 INFO [Component] Component: org.jboss.seam.core.expressions, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.Expressions

20:03:14,679 INFO [Component] Component: org.jboss.seam.core.facesContext, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.FacesConte
xt
20:03:14,679 INFO [Component] Component: org.jboss.seam.core.facesMessages, scope: CONVERSATION, type: JAVA_BEAN, class: org.jboss.seam.core.FacesMes
sages
20:03:14,689 INFO [Component] Component: org.jboss.seam.core.facesPage, scope: PAGE, type: JAVA_BEAN, class: org.jboss.seam.core.FacesPage
20:03:14,689 INFO [Component] Component: org.jboss.seam.core.httpError, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.HttpError
20:03:14,689 INFO [Component] Component: org.jboss.seam.core.image, scope: CONVERSATION, type: JAVA_BEAN, class: org.jboss.seam.core.Image
20:03:15,701 INFO [Component] Component: org.jboss.seam.core.interpolator, scope: STATELESS, type: JAVA_BEAN, class: org.jboss.seam.core.Interpolator

20:03:15,701 INFO [Component] Component: org.jboss.seam.core.isUserInRole, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.IsUserInRo
le
20:03:15,701 INFO [Component] Component: org.jboss.seam.core.locale, scope: STATELESS, type: JAVA_BEAN, class: org.jboss.seam.core.Locale
20:03:15,701 INFO [Component] Component: org.jboss.seam.core.localeSelector, scope: SESSION, type: JAVA_BEAN, class: org.jboss.seam.core.LocaleSelect
or
20:03:15,701 INFO [Component] Component: org.jboss.seam.core.manager, scope: EVENT, type: JAVA_BEAN, class: org.jboss.seam.core.Manager
20:03:15,711 INFO [Component] Component: org.jboss.seam.core.messages, scope: SESSION, type: JAVA_BEAN, class: org.jboss.seam.core.Messages
20:03:15,711 INFO [Component] Component: org.jboss.seam.core.methodContext, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.MethodCon
text
20:03:15,731 INFO [Component] Component: org.jboss.seam.core.pageContext, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.PageContext

20:03:15,731 INFO [Component] Component: org.jboss.seam.core.pages, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.Pages
20:03:15,741 INFO [Component] Component: org.jboss.seam.core.persistenceContexts, scope: CONVERSATION, type: JAVA_BEAN, class: org.jboss.seam.core.Pe
rsistenceContexts
20:03:15,741 INFO [Component] Component: org.jboss.seam.core.pojoCache, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.PojoCache
20:03:15,751 INFO [Component] Component: org.jboss.seam.core.redirect, scope: CONVERSATION, type: JAVA_BEAN, class: org.jboss.seam.core.Redirect
20:03:15,751 INFO [Component] Component: org.jboss.seam.core.renderer, scope: STATELESS, type: JAVA_BEAN, class: org.jboss.seam.ui.facelet.FaceletsRe
nderer
20:03:15,751 INFO [Component] Component: org.jboss.seam.core.resourceBundle, scope: SESSION, type: JAVA_BEAN, class: org.jboss.seam.core.ResourceBund
le
20:03:15,751 INFO [Component] Component: org.jboss.seam.core.safeActions, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.SafeActions

20:03:15,751 INFO [Component] Component: org.jboss.seam.core.sessionContext, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.SessionC
ontext
20:03:15,761 INFO [Component] Component: org.jboss.seam.core.switcher, scope: PAGE, type: JAVA_BEAN, class: org.jboss.seam.core.Switcher
20:03:15,761 INFO [Component] Component: org.jboss.seam.core.uiComponent, scope: STATELESS, type: JAVA_BEAN, class: org.jboss.seam.core.UiComponent
20:03:15,771 INFO [Component] Component: org.jboss.seam.core.userPrincipal, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.UserPrinc
ipal
20:03:15,771 INFO [Component] Component: org.jboss.seam.core.validation, scope: EVENT, type: JAVA_BEAN, class: org.jboss.seam.core.Validation
20:03:15,771 INFO [Component] Component: org.jboss.seam.core.validators, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.core.Validators
20:03:15,771 INFO [Component] Component: org.jboss.seam.framework.currentDate, scope: STATELESS, type: JAVA_BEAN, class: org.jboss.seam.framework.Cur
rentDate
20:03:15,801 INFO [Component] Component: org.jboss.seam.framework.currentDatetime, scope: STATELESS, type: JAVA_BEAN, class: org.jboss.seam.framework
.CurrentDatetime
20:03:15,801 INFO [Component] Component: org.jboss.seam.framework.currentTime, scope: STATELESS, type: JAVA_BEAN, class: org.jboss.seam.framework.Cur
rentTime
20:03:15,801 INFO [Component] Component: org.jboss.seam.mail.mailSession, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.mail.MailSession

20:03:15,801 INFO [Component] Component: org.jboss.seam.security.configuration, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.security.C
onfiguration
20:03:15,811 INFO [Component] Component: org.jboss.seam.security.identity, scope: SESSION, type: JAVA_BEAN, class: org.jboss.seam.security.Identity
20:03:15,831 INFO [Component] Component: org.jboss.seam.servlet.exceptionFilter, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.web.Excep
tionFilter
20:03:15,851 INFO [Component] Component: org.jboss.seam.servlet.multipartFilter, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.web.Multi
partFilter
20:03:15,851 INFO [Component] Component: org.jboss.seam.servlet.redirectFilter, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.web.Redire
ctFilter
20:03:15,851 INFO [Component] Component: org.jboss.seam.theme.theme, scope: SESSION, type: JAVA_BEAN, class: org.jboss.seam.theme.Theme
20:03:15,851 INFO [Component] Component: org.jboss.seam.theme.themeSelector, scope: SESSION, type: JAVA_BEAN, class: org.jboss.seam.theme.ThemeSelect
or
20:03:15,851 INFO [Component] Component: org.jboss.seam.ui.entityConverter, scope: CONVERSATION, type: JAVA_BEAN, class: org.jboss.seam.ui.EntityConv
erter
20:03:15,861 INFO [Component] Component: org.jboss.seam.ui.entityConverterStore, scope: PAGE, type: JAVA_BEAN, class: org.jboss.seam.ui.EntityConvert
erStore
20:03:15,861 INFO [Component] Component: org.jboss.seam.ui.graphicImage.dynamicImageResource, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.s
eam.ui.graphicImage.DynamicImageResource
20:03:15,861 INFO [Component] Component: org.jboss.seam.ui.graphicImage.dynamicImageStore, scope: SESSION, type: JAVA_BEAN, class: org.jboss.seam.ui.
graphicImage.DynamicImageStore
20:03:15,861 INFO [Component] Component: org.jboss.seam.ui.resource.webResource, scope: APPLICATION, type: JAVA_BEAN, class: org.jboss.seam.ui.resour
ce.WebResource
20:03:15,861 INFO [Lifecycle] starting up: org.jboss.seam.servlet.exceptionFilter
20:03:15,861 INFO [Lifecycle] starting up: org.jboss.seam.ui.graphicImage.dynamicImageResource
20:03:15,871 INFO [Lifecycle] starting up: org.jboss.seam.servlet.multipartFilter
20:03:15,871 INFO [Lifecycle] starting up: org.jboss.seam.ui.resource.webResource
20:03:15,871 INFO [Lifecycle] starting up: org.jboss.seam.servlet.redirectFilter
20:03:15,871 INFO [Initialization] done initializing Seam
20:03:15,871 INFO [SeamFilter] Initializing filter: org.jboss.seam.servlet.multipartFilter
20:03:15,871 INFO [SeamFilter] Initializing filter: org.jboss.seam.servlet.exceptionFilter
20:03:15,871 INFO [SeamFilter] Initializing filter: org.jboss.seam.servlet.redirectFilter
20:03:15,941 INFO [EARDeployer] Started J2EE application: file:/D:/Ideartis/Software-assets/FBN/FBN-app/FBN-app.ear
20:03:16,282 INFO [Lifecycle] starting up: org.jboss.seam.security.identity
20:03:16,332 INFO [Lifecycle] starting up: org.jboss.seam.security.identity
20:03:18,295 INFO [Lifecycle] starting up: org.jboss.seam.security.identity

16. Re: seam cannot reference EJB, why?

pmuir Apr 28, 2007 4:26 PM (in response to hsiung)

Show the contents of FBN-EJB.jar

17. Re: seam cannot reference EJB, why?

hsiung Apr 28, 2007 5:23 PM (in response to hsiung)

the content of the ejb jar is

- jndi-properties
- META-INF/seam.properties
- META-INF/ejb-jar.xml
- META-INF/persistence.xml
- META-INF/Manifest.mf
- com/ideartis/jee/fbn/Booking.class
- com/ideartis/jee/fbn/BookingBean.class
- com/ideartis/jee/fbn/....

18. Re: seam cannot reference EJB, why?

hsiung May 10, 2007 10:30 AM (in response to hsiung)

I solved the problem now.
The solution is to use EAR and package the jboss-seam.jar library in the EAR
instead of deploying JAR and WAR without an EAR and having jboss-seam.jar twice.

The actual implementation of Seam does NOT support the separation of Web container and EJB container.
When using Seam, they must be collocated and the deployment must be done with EAR.
The J2EE spec allows you to deploy EJB and Web artefacts independently but Seam deployment restricts you to EAR deployment only, and moreover forces the EJB and Web part to share the Seam library in a common class loader.
I hope this is only an implementation issue and not conceptual.
I didn't found any note on that. Unfortunately.
This restriction has severe consequences, not only on packaging for a single application server but naturally also on different app servers: Seam does NOT support remote EJB.
I didn't found any note on that too.
Perhaps I missed some documentation...

Bottom line:

YOU HAVE TO PUT THE JBOSS-SEAM.JAR IN THE EAR FILE AND NOT IN THE JAR AND WAR FILES.

Cheers
Alain Hsiung

19. Re: seam cannot reference EJB, why?

titou09 May 14, 2007 10:21 PM (in response to hsiung)

Alain, we reached the same point and this is a major point for us to NOT use seam all the way (This is the only problem with seam we see in fact...)

The problem is the same if you use POJOs instead of EJB3 and try to isolate those POJOs in an utiliy jar deployed in your ear, and keep only the "seam backing beans and view controllers" in the web module (Within its own war classloader..)...
Also the fact that everything must use the same classloader is really a show stopper, going against the J2EE modules architecture

If someone knows how to make it working, with only jsf+seam+non-EJB3 POJO+hibernate with all our services/managers/persistent classes in a utility jar, and our view controllers (backing beans) in a war referencing the utility jar (Injecting our services and class model in the view controllers) , just tell us how todo it, i.e. where to put each jar and each config file (seam.properties, components.xml...) and how to configure the classloaders...

In the meantime, we'll keep using spring+hibernate for our services/managers/persistent classes classes in a utility jar, and jsf+seam on the presentation side in a war, with seam injecting our spring-managed services/managers/persistent classes into seam components. Hibernate being only used in the utility jar and the Hibernate session being injected by spring

Thx in advance.

20. Re: seam cannot reference EJB, why?

hsiung May 15, 2007 4:57 PM (in response to hsiung)

Hi Titou

thanks for your enhancement. I love Seam but for me too it is a show stopper if it does not support the REMOTE feature (which includes the ability to deploy Seam components on different J2EE modules).

However I have some hope. Christian Bauer from the Seam team told me that the REMOTE feature will be out there in about 2-3 months.

On the other hand, JBSEAM-1269 "Support for remotely deployed EJBs" in JIRA has not been assigned yet. Gavin?..

I'm wondering if some of you (Seam programers) find the REMOTE feature as important as we do.

As you mentioned, Titou, the current Seam implementation goes against the J2EE modules architecture. But it goes also against the current use in the enterprise. In many company I've seen, the EJB containers are highly secured because it runs critical data and algorithms. The Web containers provide a public view for internet users and are placed in the DMZ. A firewall separate the Web and the EJB containers. In other companies there are many EJB containers placed on different machines with different life cycles and owned by different departments and placed on different locations. From the 25 projects in 10 companies I worked for, in Telco, Banks and Insurances, 80% use remote EJBs.