Unresolved <ejb-link>

Question

I'm developing in NetBeans 7, with EJB3.1 and Glassfish 3.1. I am trying to reference the Local Interface of a Session Bean in a JAR from a POJO in a WAR. When I deploy to Glassfish I receive:

SEVERE: Unresolved <ejb-link>: TaskTool-ejb#ContextFacade
SEVERE: Exception while deploying the app [com.oracle.eas_TaskTool-ear_ear_1.0-SNAPSHOT]
SEVERE: Error: Unresolved <ejb-link>: TaskTool-ejb#ContextFacade

I used the NetBeans helper to generate the code to reference the Session Bean's Local Interface and it generated the <ejb-local-ref> section in web.xml for me.

@Local
public interface ContextFacadeLocal {
    void create(Context context);
    void edit(Context context);
    void remove(Context context);
    Context find(Object id);
    List<Context> findAll();
    List<Context> findRange(int[] range);
    int count();
    List<Context> findRootContexts();
}

@Stateless
public class ContextFacade extends AbstractFacade<Context> implements ContextFacadeLocal {
    @PersistenceContext(unitName = "TaskToolPU")
    private EntityManager em;

    protected EntityManager getEntityManager() {
        return em;
    }

    public ContextFacade() {
        super(Context.class);
    }

    @Override
    public List<Context> findRootContexts() {
        CriteriaBuilder builder = em.getCriteriaBuilder();
        CriteriaQuery<Context> query = builder.createQuery(Context.class);
        Root<Context> c = query.from(Context.class);
        query.select(c).where(builder.isNull(c.get("parent")));
        query.orderBy(builder.asc(c.get("id")));

        TypedQuery<Context> q = em.createQuery(query);
        return q.getResultList();
    }
}

@FacesConverter(value = "contextConverter")
public class contextConverter implements Converter {

    ContextFacadeLocal contextFacade = lookupContextFacadeLocal();

    @Override
    public Object getAsObject(FacesContext fc, UIComponent uic, String string) {
        return contextFacade.find(string);
    }

    @Override
    public String getAsString(FacesContext fc, UIComponent uic, Object o) {ntityManager() {
        return em;
    }

    public ContextFacade() {
        super(Context.class);
    }

    @Override
    public List<Context> findRootContexts() {
        CriteriaBuilder builder = em.getCriteriaBuilder();
        CriteriaQuery<Context> query = builder.createQuery(Context.class);
        Root<Context> c = query.from(Context.class);
        query.select(c).where(builder.isNull(c.get("parent")));
        query.orderBy(builder.asc(c.get("id")));

        TypedQuery<Context> q = em.createQuery(query);
        return q.getResultList();
    }
}

@FacesConverter(value = "contextConverter")
public class contextConverter implements Converter {

    ContextFacadeLocal contextFacade = lookupContextFacadeLocal();

    @Override
    public Object getAsObject(FacesContext fc, UIComponent uic, String string) {
        return contextFacade.find(string);
    }

    @Override
    public String getAsString(FacesContext fc, UIComponent uic, Object o) {
        return ((Context) o).getId().toString();
    }

    private ContextFacadeLocal lookupContextFacadeLocal() {
        try {
            javax.naming.Context c = new InitialContext();
            //return (ContextFacadeLocal) c.lookup("java:global/com.oracle.eas_TaskTool-ear_ear_1.0-SNAPSHOT/com.oracle.eas_TaskTool-ejb_ejb_1.0-SNAPSHOT/ContextFacade!com.oracle.eas.ejbs.ContextFacadeLocal");
            return (ContextFacadeLocal) c.lookup("java:comp/env/TaskTool-ejb#ContextFacade");

        } catch (NamingException ne) {
            Logger.getLogger(getClass().getName()).log(Level.SEVERE, "exception caught", ne);
            throw new RuntimeException(ne);
        }
    }
}


<?xml version="1.0" encoding="UTF-8"?>
<web-app 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/web-app_3_0.xsd">
    <context-param>
        <param-name>javax.faces.PROJECT_STAGE</param-name>
        <param-value>Development</param-value>
    </context-param>
    <servlet>
        <servlet-name>Faces Servlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>Faces Servlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>faces/index.xhtml</welcome-file>
    </welcome-file-list>
    <ejb-local-ref>
        <ejb-ref-name>ContextFacade</ejb-ref-name>
        <ejb-ref-type>Session</ejb-ref-type>
        <local>com.oracle.eas.ejbs.ContextFacadeLocal</local>
        <ejb-link>TaskTool-ejb#ContextFacade</ejb-link>
    </ejb-local-ref>
</web-app>

UPDATE

For clarity:

I don't have an ejb-jar.xml at all.

Using either <ejb-link>TaskTool-ejb/ContextFacade</ejb-link> or <ejb-link>com.oracle.eas_TaskTool-ejb_ejb_1.0-SNAPSHOT/ContextFacade</ejb-link> works.

Please see bkail answers below for explanation. Many thanks!

Solution 1

I had the same issue when trying to deploy my application, NetBeans generated this code in my web.xml on its own.

Check your web.xml and see if you see this:

<ejb-local-ref>
        <ejb-ref-name>appName</ejb-ref-name>
        <ejb-ref-type>Session</ejb-ref-type>
        <ejb-link>AppName#SomeClass</ejb-link>
    </ejb-local-ref>

if so just remove it comepletely, it should deploy after.

Solution 2

What is the name of your EJB module? Unless the jar file is named literally "TaskTool-ejb.jar", then you need to use either:

<ejb-link>TaskTool-ejb.jar#ContextFacade</ejb-link>

or:

<ejb-link>TaskTool-ejb/ContextFacade</ejb-link>

The latter assumes you haven't overridden the module-name in ejb-jar.xml.

Update: Based on your own comment, perhaps you need to use "com.oracle.eas_TaskTool-ejb_ejb_1.0-SNAPSHOT.jar#ContextFacade" or "com.oracle.eas_TaskTool-ejb_ejb_1.0-SNAPSHOT/ContextFacade".

Comments

[retrodev]

bkail, I don't have an ejb-jar.xml at all. Using either <ejb-link>TaskTool-ejb/ContextFacade</ejb-link> or <ejb-link>com.oracle.eas_TaskTool-ejb_ejb_1.0-SNAPSHOT/Conte‌​xtFacade</ejb-link> works. Could you explain the difference between using # or / and why I need this section in web.xml at all?

[Brett Kail]

The # syntax is <uri>#<ejb-name>, where uri is the physical JAR name in the EAR, and ejb-name is the bean name (default is the short class name of the annotated EJB). The / syntax is <module-name>/<ejb-name>, where the module-name is specified in ejb-jar.xml (default is the URI without the extension). Can you elaborate on what you mean by "why I need this section in web.xml at all"? Do you mean the whole ejb-local-ref or the ejb-link?

[retrodev]

I mean the ejb-local-ref. Glassfish 3.1 doesn't seem to need it.

[Brett Kail]

The ejb-local-ref is declaring a reference to allow lookup("java:comp/env/ContextFacade"). If nothing in your code is using that (or you have an @EJB(name="ContextFacade") elsewhere), then you don't need the ejb-local-ref.

[Twimnox]

Worked for me, I don't know what triggers netbeans to do this, it was the first time it happened when developing webservices...