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Where do I set the web-service host name for an EJB3 client, when the web-service client is injected.
Started by James on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Before that, I'll assume you have @WebServiceClient annotation....
Please do.
You didn't specify any information.
If it's anything like how JMS clients work, then you would need to provide the client with a JNDI that refers to the address of the service provider .
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I'd like to get into ejb3 to gain some practice in writing for it. I searched for tutorials and how-to's but could find some scarce unhelpful information.
I'm looking for a tutorial or walkthrough that will guide me from the very basics (Which software...
Started by Ben on
, 6 posts
by 6 people.
Answer Snippets (Read the full thread at stackoverflow):
EJB in Action is a great book
How about the JBoss EJB3 Tutorial - http://docs.jboss.org/ejb3/app-server/tutorial/
It would make sense to start with JBoss Seam as it's an easy introduction into EJB3.
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A friend and I are building a fairly complex website based on java. (PHP would have been more obvious but we chose for java because the educational aspect of this project is important to us)
We have already decided to use JSF (with richfaces) for the ...
Started by Hendrik on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
With many more....
Persistance JPA is very of EJB3.
EJB3 is split into two layers:
persistance (JPA, old Entity beans) business logic (old Session beans) You can have the same architecture, without using explicitely EJB3.
With Spring.
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Hi, I would like to know if there are any tools to automatically generate EJB3 Entity Beans(for JPA) from a database schema.
Thanks.
Started by soontobeared on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
From the OpenJPA ....
Some of IDs have such feature, for example NetBeans
OpenJPA has a tool which will generate your Entity definitions .
Dali supports top-down, bottom-up (this is what you're looking for), and meet-in-the-middle development approaches .
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I am calling a remote stateless session bean from a J2SE application and would like to cache the reference to the session bean in order to reduce the cost of the lookup. Is this ok?
In EJB2 the ServiceLocator pattern was commonly used to cache lookups...
Started by Ken Liu on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Generally I just have a static 'LookupServices' class that just .
And EJB3, and never had an issue.
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What happens, if an EJB3 stateless/stateful bean no args constructor throws an exception? For example, class A has a DI:
@EJB B b;
and B throws an exception in the constructor? I didn't find any mention for this case in EJB3 specs. I'd guess that the ...
Started by tputkonen on
, 4 posts
by 4 people.
Answer Snippets (Read the full thread at stackoverflow):
Typically a null pointer ....
When this happens your EJB / Web URLs are not available.. .
IME if any of your EJBs fail to initialize when staring the application the appserver knows a problem occurred and does not flag your application as being available .
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My team is developing a new service oriented product with a web front-end. In discussions about what technologies we will use we have settled on running a JBoss application server, and Flex frontend (with possible desktop deployment using Adobe AIR), ...
Started by Justin Standard on
, 9 posts
by 9 people.
Answer Snippets (Read the full thread at stackoverflow):
We've used....
We find that it's more streamlined, nicer to code, and not as well documented as EJB3 (or JPA I guess at the end of the day)
As of EJB3 you no longer have these POJOs for you.
I would definately recommend EJB3 over spring.
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I've got a NullPointerException using EJB3 in a J2SE environment (without EJB3 container)
Briefly, I've got a stateless bean implementing an interface. When I call it in another class like in a main, a NullPointerException is triggered.
Sample:
@stateless...
Started by yondaime on
, 3 posts
by 3 people.
Answer Snippets (Read the full thread at stackoverflow):
Furthermore, you are trying to use a ....
If you are the one instantiating them, it is your responsibility to set the dependencies .
The dependencies ( @EJB ) are injected if the beans are instantiated by the container .
EJBs can't work without a container.
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I am looking for an open source project that uses EJB3 as backend and JSF as frontend. It should not be a tutorial but a real application that real people are using.
The application should be data-driven, i.e. the following aspects are fundamental and...
Started by Marcel on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
The examples are not as sophisticated (don't really fulfill your .
Including EJB3 (JPA only) and JSF.
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I have an architecture scenario and I would like to discuss to get your opinion.
I can choose between these two (this is a constraint imposed on me)
Use EJB3+JPA - no Spring/Hibernate POJO + JDBC - again no Spring/Hibernate I have series of web applications...
Started by Shaw on
, 5 posts
by 5 people.
Answer Snippets (Read the full thread at stackoverflow):
If the server isn't an EJB3-enabled server....
A full, up-to-date JavaEE server will come with EJB3 and JPA implementations already.
As for the JPA v Hibernate and Spring v EJB3 debates, I'm much moe equivocal, seems to be an area with much.
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