[jboss-user] [JBoss Seam] - ejb3/seam-gwt-remoting/gwt

[hartfordd]

I'm trying to expose an existing ejb3 method so many other GWT web applications can access it directly through SEAM remoting.


error
==========
Exception while dispatching incoming RPC call

java.lang.RuntimeException: Type cannot be determined for component 

[Component(com.domain.app.gwt.client.QueryGwtService)]. Please ensure that it has a local interface.
at 
org.jboss.seam.remoting.gwt.GWTToSeamAdapter.callWebRemoteMethod(GWTT
oSeamAdapter.java:88)
======


EJB3 SIDE:
===========
package com.domain.app.ejb;
@Stateless
//Name is the GWT sych service
@Name("com.domain.app.gwt.client.QueryGwtService")
public class QueryGwt implements QueryGwtLocal {

	@WebRemote
	public String gwtTest2(){
		return "test ok";
	}
	
}
------
package com.domain.app.ejb;
@Local
public interface QueryGwtLocal {
	  @WebRemote
	  public String gwtTest2();
}
-----
<?xml version="1.0" encoding="UTF-8"?>
<ejb-jar version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/ejb-jar_3_0.xsd">

<!-- SEAM 2.0 support -->

      
<interceptor-class>org.jboss.seam.ejb.SeamInterceptor</interceptor-class>
      
   
   <assembly-descriptor>
      <interceptor-binding>
         <ejb-name>*</ejb-name>
<interceptor-class>org.jboss.seam.ejb.SeamInterceptor</interceptor-class>
      </interceptor-binding>
   </assembly-descriptor>
</ejb-jar>
-----------
empty seam.properties in the root of the jar.
=============

Is this all you need to do for the EJB3/server side so it can be consumed by may other GWT web applications?


Sample GWT side:
=========
<?xml version="1.0" encoding="UTF-8"?>
<components ....>

  <core:init
    jndi-pattern="my-ear-app/#{ejbName}/local"
    debug="false"/>

  <core:manager conversation-timeout="120000"/>


--------
<web-app>
 
       <listener-class>org.jboss.seam.servlet.SeamListener</listener-class>
    
	
  <servlet-name>Seam Resource Servlet</servlet-name>
<servlet-class>org.jboss.seam.servlet.SeamResourceServlet</servlet-class>

    <servlet-mapping>
  <servlet-name>Seam Resource Servlet</servlet-name>

  <!--DRH modified url-pattern to match how GWT app works -->
<url-pattern>/com.domain.app.gwt.HelloWorld/seam/resource/*</url-pattern>
</servlet-mapping>
</web-app>
-----------
package com.domain.app.gwt.client;
public interface QueryGwtService extends RemoteService{
  public String gwtTest2();
}
----------
package com.domain.app.gwt.client;
public interface QueryGwtServiceAsync{
	public void gwtTest2(AsyncCallback callback);
}
--------
//sample call to get service
   private QueryGwtServiceAsync getService() 
   {       
      String endpointURL = GWT.getModuleBaseURL() + "seam/resource/gwt";      
      QueryGwtServiceAsync svc = (QueryGwtServiceAsync) GWT.create(QueryGwtService.class);
      ((ServiceDefTarget) svc).setServiceEntryPoint(endpointURL);
      return svc;     
   }   
=========




My concern is, the example says to put the GWT Sych interface/service on the EJB3 side, which does not make sense as multiple GWT apps could use it and would need to copy that interface again.

Any pointers please?  Thanky,
-D



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