javax.naming.CannotProceedException; remaining name

[Juan Malle]

Hi, im trying to acces an EJB entity from a servlet.
The EJB is using Persistance, and MySQL
Im using Jboss 5.1.0.GA as Container, and i can see the EJB correctly deployed into

********** From the jboss console manager ****************************************************

Global JNDI Namespace

+- UserTransactionSessionFactory (proxy: $Proxy230 implements interface org.jboss.tm.usertx.interfaces.UserTransactionSessionFactory)
...
+- LibroBean (class: org.jnp.interfaces.NamingContext)
| +- remote-ve.ekabod.lib.LibroBeanRemote (class: Proxy for: ve.ekabod.lib.LibroBeanRemote)
| +- local (class: Proxy for: ve.ekabod.lib.LibroBeanLocal)
| +- remote (class: Proxy for: ve.ekabod.lib.LibroBeanRemote)
| +- local-ve.ekabod.lib.LibroBeanLocal (class: Proxy for: ve.ekabod.lib.LibroBeanLocal)

+- HiLoKeyGeneratorFactory (class: org.jboss.ejb.plugins.keygenerator.hilo.HiLoKeyGeneratorFactory)
...

*********************************************************************************************************************************
Im just copyng the .jar containing the EJB into my JBOSSfolder/server/default/deploy

I have no problems with the EJB, in fact the table is being generated perfectly, and im able to access it with another EJBs my issue is the following:

When trying to find the EJB from the Servlet im getting this message error:

*****************************From the Jboss console*************************************************************************
14:48:26,145 ERROR [STDERR] javax.naming.CannotProceedException; remaining name 'LibroBean/local'
14:48:26,190 ERROR [STDERR] at javax.naming.spi.ContinuationContext.getTargetContext(ContinuationContext.java:43)
14:48:26,190 ERROR [STDERR] at javax.naming.spi.NamingManager.getContinuationContext(NamingManager.java:770)
14:48:26,190 ERROR [STDERR] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:832)
14:48:26,190 ERROR [STDERR] at org.jnp.interfaces.NamingContext.lookup(NamingContext.java:686)
14:48:26,191 ERROR [STDERR] at javax.naming.InitialContext.lookup(InitialContext.java:392)
14:48:26,191 ERROR [STDERR] at ve.ekabod.lib.web.MainServlet.doGet(MainServlet.java:43)
14:48:26,191 ERROR [STDERR] at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
14:48:26,191 ERROR [STDERR] at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
14:48:26,191 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
14:48:26,191 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
14:48:26,191 ERROR [STDERR] at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
14:48:26,191 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
14:48:26,191 ERROR [STDERR] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
14:48:26,191 ERROR [STDERR] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
14:48:26,191 ERROR [STDERR] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
14:48:26,191 ERROR [STDERR] at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
14:48:26,191 ERROR [STDERR] at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
14:48:26,191 ERROR [STDERR] at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
14:48:26,191 ERROR [STDERR] at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
14:48:26,191 ERROR [STDERR] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
14:48:26,192 ERROR [STDERR] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
14:48:26,192 ERROR [STDERR] at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
14:48:26,192 ERROR [STDERR] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
14:48:26,192 ERROR [STDERR] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
14:48:26,192 ERROR [STDERR] at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:829)
14:48:26,192 ERROR [STDERR] at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:598)
14:48:26,192 ERROR [STDERR] at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
14:48:26,192 ERROR [STDERR] at java.lang.Thread.run(Thread.java:619)
**********************************************************************************************************

The source code extract from the servlet that is crashing is this:

try {
			Context context = new InitialContext();			
			//aca esta el problema
			LibroBeanLocal beanLocal = (LibroBean)context.lookup("java:/MySqlDS/" + LibroBean.class.getSimpleName() + "/local");
			//List list = beanLocal.list();
		}
		catch (Exception e) {
			e.printStackTrace();
		}	

Im afraid that there's something wrong in my web.xml, or im not stating in the servlet some information about the jdni properties or linking the EJB, i've tried modifying several times the web.xml whith examples i've found via googleing with no luck.
My web.XML is as follows

<?xml version="1.0" encoding="UTF-8"?>
 <web-app id="WebApp_ID" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
	   <servlet>
	     <servlet-name>MainServlet</servlet-name>
	     <servlet-class>ve.ekabod.lib.web.MainServlet</servlet-class>
	   </servlet>  
       <servlet-mapping>
         <servlet-name>MainServlet</servlet-name>
         <url-pattern>/MainServlet</url-pattern>
       </servlet-mapping>    
 </web-app>

and i havent found the correct way to link the EJB here.

Please, can someone help me with this? i've wasted 2 days trying to solve this problem... Thanks in advance
JP

[Deepak Bala]

You might have better luck in the EJB forums. Looks like a bean lookup is failing. How did you define the bean deployment JNDI name ? Where is it bound in the JNDI tree ?

[Juan Malle]

fixed it already, but forgot to update this post

I just changed the way i was looking up the EJB by this

   
try {
				  			Context context = new InitialContext();
							LibroBeanLocal beanLocal = (LibroBeanLocal)context.lookup(LibroBean.LocalJNDIName);
							List list = beanLocal.list(search);

 

In fact up in the bean i had the ejb's jndis names

	@PersistenceContext
	EntityManager em;

	[b]public static final String RemoteJNDIName =  LibroBean.class.getSimpleName() + "/remote";
	public static final String LocalJNDIName =  LibroBean.class.getSimpleName() + "/local";[/b]

How did you define the bean deployment JNDI name ? Where is it bound in the JNDI tree ?

your questions may solved the problem Deepak, you were right.. thanks

[Deepak Bala]

Glad to hear your problem was solved. Thanks for sharing the answer