0 Replies Latest reply: Apr 9, 2012 9:33 AM by Mohamed Mostafa RSS

    Context Lookup error

    Mohamed Mostafa Newbie

      i will explain my project breifly

       

      I need to create a webservice which calls an EJB that execute a query on a sybase database

      this database is a datasource on glassfish server ( i am using Netbeans 7.1.1 )

       

      i have created Stateless session EJB which i needs it to connect to the database using JNDI

       

      here is a part of the class

       

      @Stateless
      public class NewSessionBean implements NewSessionBeanLocal {
          @Resource(name = "ejb")
          private DataSource ejb;
      
          @Override
          public String execute(String query) {
              String dbName = "java:comp/env/jdbc/ejb";
              try {
                  Context loContext = (Context) new InitialContext().lookup("java:comp/env");
                  ejb = (DataSource)loContext.lookup("jdbc/ejb");
                  Connection loConnection = ejb.getConnection();
      

       

      and the glassfish.xml found in the configuration files of the EJB project is

       

      <glassfish-ejb-jar>
        <enterprise-beans>
          <ejb>
            <ejb-name>NewSessionBean</ejb-name>
            <resource-ref>
              <res-ref-name>ejb</res-ref-name>
              <jndi-name>jdbc/ejb</jndi-name>
            </resource-ref>
          </ejb>
        </enterprise-beans>
      </glassfish-ejb-jar>
      

       

      when i run the code it always gives an error at that line

       

      Context loContext = (Context) new InitialContext().lookup("java:comp/env");
      

       

      i have tried many lookups like

       

      Context loContext = (Context) new InitialContext().lookup("java:comp/env/jdbc/ejb");

       

      HINT: my JNDI name i want to use is: jdbc/ejb

       

      always giving me that error

       

      run:

      Apr 9, 2012 3:26:35 PM bean.NewSessionBean execute

      SEVERE: null

      javax.naming.NamingException: Lookup failed for 'java:comp/env' in SerialContext[myEnv={java.naming.factory.initial=com.sun.enterprise.naming.impl.SerialInitContextFactory, java.naming.factory.url.pkgs=com.sun.enterprise.naming, java.naming.factory.state=com.sun.corba.ee.impl.presentation.rmi.JNDIStateFactoryImpl} [Root exception is javax.naming.NamingException: Invocation exception: Got null ComponentInvocation ]

          at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:518)

          at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:455)

          at javax.naming.InitialContext.lookup(InitialContext.java:392)

          at bean.NewSessionBean.execute(NewSessionBean.java:35)

          at bean.Main.main(Main.java:14

      )

      Caused by: javax.naming.NamingException: Invocation exception: Got null ComponentInvocation

          at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.getComponentId(GlassfishNamingManagerImpl.java:873)

          at com.sun.enterprise.naming.impl.GlassfishNamingManagerImpl.lookup(GlassfishNamingManagerImpl.java:742)

          at com.sun.enterprise.naming.impl.JavaURLContext.lookup(JavaURLContext.java:177)

          at com.sun.enterprise.naming.impl.SerialContext.lookup(SerialContext.java:498)

      Please anyone help me if anything still unclear i will provide you with all you need i need this solution urgently.