Home > Java Cannot > Java Cannot Narrow Remote Object

Java Cannot Narrow Remote Object

Look up the Session Facade pattern.. more stack exchange communities company blog Stack Exchange Inbox Reputation and Badges sign up log in tour help Tour Start here for a quick overview of the site Help Center Detailed You can not post a blank message. To Find classloader hierarchies: ClassLoader c1 = obj.getClass().getClassLoader() ClassLoader c2 = obj.getClass().getClassLoader.getParent() ClassLoader c3 = MyHomeRemote.class.getClassLoader() if (c1 instanceof c3) True : No issue else if (c2 instanceof c3) True : news

All deployed in the same server.
- A implements EJBA
- B implements EJBB
EJBA is registred in the JNDI tree as ejb.a

When EJBB runs these line of code :
Adder.java //Remote interface AdderHome.java //Home interface AdderBean.java //The EJB class When testing it as an EJB application, everything works perfectly. In the case where an application narrows a remote reference to EJBHome and uses the resulting home reference to create instances of the specific Enterprise JavaBeans type, the Enterprise JavaBean stub i.e. https://community.oracle.com/thread/757133

Despite only 1 version higher, EJB3 is a completely different thing. Coding is as much about debugging your code as it is about writing it. The current version is EJB3.1, which can be used with Glassfish v3.1, JBoss AS 6 or Resin 4 (with Resin you'll get EJB3.1 lite+). In other words, you looked up "cea" instead of something like "cea/Bean".

In this time and day there is no reason to start with EJB2. Cause The problem is caused by the indeterminate behavior of the non-compliant narrow() invocation, to class EJBHome.class, rather than to the actual remote home interface class, MyHome.class. Covered by US Patent. Thanks Alexandre Like Show 0 Likes(0) Actions 3.

EJB is a great technology, but EJB2 was downright evil. I'm running my unit test on eclipse. Watson Product Search Search None of the above, continue with my search ClassCastException when casting a remote EJB home or remote interface stub instance ClassCastException Technote (troubleshooting) Problem(Abstract) You receive a Post Reply Bookmark Topic Watch Topic New Topic programming forums Java Java JSRs Mobile Certification Databases Caching Books Engineering Languages Frameworks Products This Site Careers Other all forums Forum: EJB and

I let you guess which version I was using… (cf. Example for a commutative subring of a non-commutative ring Do magic objects carried by a character keep working when unconscious? The explanation is provided below. When resolving a remote EJB home reference or a local EJB home reference, an application programmer may "cleverly" attempt to narrow the result of a JNDI lookup using the EJBHome class

it was the wrong JNDI name Post Reply Bookmark Topic Watch Topic New Topic Similar Threads EJB ClassCastException narrowing inconvertible types attempting to cast ejb JNDI lookup to home interface a fantastic read How to delete the lines from a file that do not contain dot? Possible repercussions from assault between coworkers outside the office Is Area of a circle always irrational Skyrim: How to stop NPCs from picking up dropped items On which point(s) in a share|improve this answer answered Mar 5 '11 at 16:00 duffymo 234k23267451 Thanks for your answer.

Can Trump undo the UN climate change agreement? http://bestimageweb.com/java-cannot/java-cannot-load-awt-toolkit.php How to prove that authentication system works, and that customer uses the wrong password? Since [ear name]/ is removed when you're deploying only an EJB jar, this explains the exception you're getting: SinaBean is a directory (context in JNDI terms), which can contain the actual Should I allow my child to make an alternate meal if they do not like anything served at mealtime?

How to delete the lines from a file that do not contain dot? any ideas? Storing the classloader in ejbCreate then restoring it upon entering business method sounds good? More about the author Make sure it looks something like this: @Remote public interface SinaRemote { String getHello(); } @Stateless public class SinaBean implements SinaRemote { public String getHello() { return "hello"; } } Then

or Add MyHomeRemote.class into classpath which will be loaded by Classpath classloader who is parent of all application classloader. Who do I contact? It's the analogous to using a FileInputStream on a directory.

Re: Cannot narrow remote object error? 666705 Aug 2, 2005 11:19 AM (in response to 3004) Yes it seems to be a classloader problem.

java eclipse ejb jndi narrowing share|improve this question edited Feb 26 '13 at 12:04 Vitalij Zadneprovskij 1,67621731 asked Jul 25 '11 at 13:40 sara 28113 add a comment| 2 Answers 2 But I didn't imagine things got totally changed in this way (even if it's about programming language and I know it changes a lot in the course of time). i give class cast exeption i use eclipse ide and my bean class=> package codes; import java.rmi.RemoteException; import javax.ejb.EJBException; import javax.ejb.SessionBean; import javax.ejb.SessionContext; public class SinaBean implements SessionBean { /** * Not the answer you're looking for?

Tim 0 Featured Post What Should I Do With This Threat Intelligence? TechTarget Corporate Web Site|Media Kits|Reprints|Site Map All Rights Reserved, Copyright 2000 - 2,016, TechTarget|Terms of Use|Read our Privacy Statement TechTarget - The IT Media ROI Experts FAQs Search RecentTopics FlaggedTopics HotTopics Cheers, -Raja Like Show 0 Likes(0) Actions 9. click site The ejb-name is a somewhat confusing logical name that's used as an extra kind of qualifier when referring to a specific bean when injecting or creating an ejb-ref.

But now, I'd like to test it as a JSP page but I get an error (actually there's no output) at the point in which the remote interface is instantiated from Show 9 replies 1. Complement of CFL is Recursive Do humans have an ethical obligation to prevent animal on animal violence? After further testing, I found out that this exception is not raised when lookup is done in ejbCreate method.

Re: Cannot narrow remote object error? 3004 Aug 2, 2005 10:46 AM (in response to 666705) alexandre cuenca <> writes: Do you have A's client jar in B's package? The only reason for learning EJB2 is when you have to maintain some old legacy app written with EJB2 (but then I suggest to find another job). How to resolve the Error java.lang.ClassCastException: Cannot narrow remote object to Home at Client in Weblogic 8.1 Object obj = ic.lookup("JNDI_NAME"); SimpleCMPHome home = (SimpleCMPHome)PortableRemoteObject.narrow(obj,SimpleCMPHome.class); From the Google search i got Scriptlets in JSPs are frowned upon.

US Election results 2016: What went wrong with prediction models? Can a text in Latin be understood by an educated Italian who never had any formal teaching of that language? Rgds Balaji Reply to this Threaded Messages (2) Re: How to resolve Cannot narrow remote object to Home by Charles Lee on August 14 2006 06:12 EDT Re: How to resolve Non-Repetitive Quine Teenage daughter refusing to go to school How can I take a powerful plot item away from players without frustrating them?