[JBoss Seam] - Re: Seam 1.1 beta 1
by chuckadams
Check out the contactlist example, which uses the framework. It's also in the documentation. From what I can see, It's basically Generic DAO components, though I'm also curious what else might come under the umbrella of the framework.
I've been using it to build an internal app for my workplace, In the current state of the framework, I end up subclassing EntityHome to support first-edit-wins concurrency control, and additionally I need to sprinkle a lot of conversation propogation parameters around, since I make the edit screen start a conversation. Still hardly any code at all to write (I only needed one method to catch OptimisticLockException in edits), so while calling it an "Application Framework" is a little bit ambitious this early on (all it does is CRUD), it's got quite a nice start.
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19 years, 6 months
[JCA/JBoss] - JCA Adapter ClassCastException
by mickey.mouse
Hello,
I'm writing a JBoss JCA Adapter, and I have a strange ClassCastException in the client EJB code.
Here's the situation (in the EJB)
1. Look up JCA Connection via JNDI - OK.
Object returned is a ConnectionFactory (store as connFact)
2. Examine ConnectionFactory in debugger
ConnectionFactory is really my own connection Factory implementation
(let's call it FooConnectionFactory)
in debugger, if I evaluate
(connFact instanceof FooConnectionFactory)
- answer is TRUE.
3. I now cast connFact to type FooConnectionFactory.
FooConnectionFactory myConnFact = (FooConnectionFactory)connFact;
At this point, I get a ClassCastException!
But this doesn't jive:
- in the debugger, connFact is really a FooConnectionFactory.
- casting *in the debugger* works too!
Does anyone have any idea on what might be going wrong? An educated guess is some JBoss classloading issue - but it's just a guess.
Any help is really appreciated.
Thanks
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19 years, 6 months
[JBoss Portal] - Is JBoss Portal ready for prime enterprise use?
by walbar
We are evaluating open source portals and CMSs to implement a high traffic web enterprise system. We have already checked Liferay, Alfresco and others. We would like to have your feedback in the following topics.
- Can a development be started with JBoss Portal 2.6 in its current state? What are the risks? Our first production deploy would be in February. In case this isn?t possible, what is the risk of starting with 2.4 and changing to 2.6 whenever it turns to be possible?
- We are planning to use EJBs 3.0 in the back-end running on JBoss AS. Can the front-end (JBoss Portal) run over the same version of JBoss AS?
- Can we configure JBoss Portal to run in a Farm? We don?t want any kind of overhead associated with session replication or cache sharing. We would have a load balancer with sticky sessions.
- Does JBoss offer support for JBoss Portal? Is version 2.6 supported? When would it be?
- We are required to have a Staging environment, any plan to support this? Which would be the recommended starting path?
We have though about 2 possibilities:
a. Having 2 database schemas in parallel, one for Staging and the other for production (read-only). At the time of publishing, and ETL would transfer the data from the staging context to production and then refresh the state in some way.
b. Implement persistence of pages, portlet layouts, and portlet preferences to the JCR therefore having the versioning and staging facilities proper of JSR 170.
- JBoss Portal CMS support seems to be very basic. We require structured content edition and a page browser when inserting links in the WYSIWYG HTML editor. We have liked the WCM from Alfresco, is there any plan to integrate it with JBoss, when? If we choose to follow this path on our own, could you point us in the right direction?
- Our extranet users (visitors) wouldn?t manage neither portlets nor layouts. Would it be a good decision to have all of them mapped to only one user (?guest?) in JBoss Portal.
- We need to have a very fine grained control of the cache http meta-data to send appropriate cache commands to the caching servers (Squid). How could we achieve this?
- Do you have plans to support ESI (Edge Side Includes)?
- A very strong requirement for us is to have a per-portlet configurable application cache. The JSR 168 standard provides it in a per-user basis however we need it per-portlet and application wide, can JBoss Poral be configured this way or we should use an additional cache layer like OSCache. Portlet caching in JBoss is performed per-user or per-session basis? If per-user is the case, having all extranet visitors as the ?guest? JBoss Portal user would solve the problem?
- We are expecting around 40k hits per second. Is the JBoss Portal performance enough for such traffic? Do you have success cases in high traffic portals? We are planning to have 10 JBoss Portal servers in Farm for the front-end and 10 JBoss ASs in cluster for the back-end running Stateless Session Beans 3.0.
- The system has many sites (countries) with different look & feels, can JBoss Portal be configured to run the same portal (same set of pages) with different look & feels? If that is the case, can it manage a cache for each site (country)? If a small set of pages needs a different configuration (portlets in the page, layout, portlet configuration), how we should model this?
- We are thinking of using Acegi security. In some cases security constraints would imply to remove portlets from pages. How can we achieve this?
- Would you implement eBay with JBoss Portal?
Thanks in advance for your answers.
Waldemar Baraldi
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19 years, 6 months
[JBoss Seam] - Re: Seam in Eclipse: Library problems
by cupdike
Call me old-fashioned, but when I go to build a project, I expect it to build without errors, and don't like the thought of ripping stuff out of it to get it to work. After all, JBoss is all about professionalopen source. Climbing down off my soapbox now... I, of course, reserve the right to have goofed something up, not realized it, and look stupid (as always ;-)
To get the project to build properly, I downloaded and added the JGroup project http://www.jgroups.org/javagroupsnew/docs/index.html to my libs. Then, I had to change line 126 of org.jboss.seam.util.Conversions.java from this: public static class ArrayConverter implements Converter to this:
public static class ArrayConverter implements Converter<Object>
and now everything is fine. I'd submit a patch but seems pretty overkill to add 8 chars to a file (and I'm not sure I just didn't do something dumb).
Regards.
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19 years, 6 months