Examples of javax.naming.Context.lookup()

javax.naming.Context.lookup()
Returns the object bound to the specified name in this context. If the specified name is empty, a new instance of this context is returned, complete with its own environment properties. @param n a Name to lookup @return the object bound to the specified name in this context @throws NamingException if an error occurs.

        HelloInterface hello = null;


        try {
            System.setProperty("java.rmi.server.useCodebaseOnly", "true");
            Context initialContext = getInitialContext();
            hello = (HelloInterface) initialContext.lookup(JNDI_NAME);


        } catch (NamingException ex) {
            Logger.getLogger(HelloWorldTest.class.getName()).log(Level.SEVERE, "Unable to found HelloWorld EJB.", ex);
        }
        return hello;

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     */
    public void getBeanByLookup() throws NamingException, CreateException {
        // Obtain the default initial JNDI context.
        Context initCtx = new InitialContext();


        Object result = initCtx.lookup(getBeanName());


        SimpleEjb2LocalHome beanHomeLookup = (SimpleEjb2LocalHome) javax.rmi.PortableRemoteObject.narrow(result,
                SimpleEjb2LocalHome.class);


        SimpleEjb2Local beanLookup = beanHomeLookup.create(DEFAULT_NAME);

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     * @throws Exception if a problem occurs
     */
    public static void checkJNDI() throws Exception{
        Context ctx = new InitialContext();


        TimerService ts = (TimerService) ctx.lookup("java:comp/TimerService");
        if (ts == null){
            throw new Exception("TimerService reference obtained using JNDI API is null.");
        }
    }
}

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        System.setProperty(Context.INITIAL_CONTEXT_FACTORY,
                "org.objectweb.carol.jndi.spi.MultiOrbInitialContextFactory");
        //gets the initialcontext
        Context initialContext = new InitialContext();
        //gets the usertransaction
        UserTransaction utx = (UserTransaction) initialContext.lookup("javax.transaction.UserTransaction");
        return utx;
    }


    /**
     * This method use the java: naming

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     */
    public static UserTransaction getUserTransaction() throws NamingException {
        //gets the initialcontext
        Context initialContext = new InitialContext();
        //gets the usertransaction
        UserTransaction utx = (UserTransaction) initialContext.lookup("java:comp/UserTransaction");
        return utx;
    }
}

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     * @throws Exception if a problem occurs
     */
    public static void checkJNDI() throws Exception{
        Context ctx = new InitialContext();


        UserTransaction utx = (UserTransaction) ctx.lookup("java:comp/env/UserTransaction");
        if (utx == null){
            throw new Exception("UserTransaction reference obtained using JNDI API is null.");
        }
    }
}

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                    "weblogic.jndi.WLInitialContextFactory");
            props.put(Context.PROVIDER_URL,         config.getURL());
            props.put(Context.SECURITY_PRINCIPAL,   config.getUsername());
            props.put(Context.SECURITY_CREDENTIALS, config.getPassword());
            Context ctx =  new InitialContext(props);
            MBeanHome home = (MBeanHome) ctx.lookup(MBeanHome.JNDI_NAME + "." +
                            "localhome");
            // Fix for 1586075: Passing context in, so that it can be closed when the connection
            //   is closed
            return new WLServerConnection(home.getMBeanServer(), ctx);
        } catch (Throwable e) {

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      String remoteBusinessInterfaceJNDIName = this.getJavaGlobalJNDIName(beanName, EchoRemote.class.getName());
      String localBusinessInterfaceJNDIName = this.getJavaGlobalJNDIName(beanName, EchoLocal.class.getName());
      


      logger.info("Looking up " + remoteBusinessInterfaceJNDIName);
      EchoRemote remoteEcho = (EchoRemote) ctx.lookup(remoteBusinessInterfaceJNDIName);
      logger.info("Looking up " + localBusinessInterfaceJNDIName);
      EchoLocal localEcho = (EchoLocal) ctx.lookup(localBusinessInterfaceJNDIName);
      
      if (isEJB31)
      {

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      logger.info("Looking up " + remoteBusinessInterfaceJNDIName);
      EchoRemote remoteEcho = (EchoRemote) ctx.lookup(remoteBusinessInterfaceJNDIName);
      logger.info("Looking up " + localBusinessInterfaceJNDIName);
      EchoLocal localEcho = (EchoLocal) ctx.lookup(localBusinessInterfaceJNDIName);
      
      if (isEJB31)
      {
         String noInterfaceViewJNDIName = this.getJavaGlobalJNDIName(beanName, beanClass.getName());
         logger.info("Looking up " + noInterfaceViewJNDIName);

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      if (isEJB31)
      {
         String noInterfaceViewJNDIName = this.getJavaGlobalJNDIName(beanName, beanClass.getName());
         logger.info("Looking up " + noInterfaceViewJNDIName);
         Object noInterfaceView = ctx.lookup(noInterfaceViewJNDIName);
         if (!beanClass.isInstance(noInterfaceView))
         {
            throw new RuntimeException("Unexpected object " + noInterfaceView + " in JNDI for jndi name "
                  + noInterfaceViewJNDIName);
         }

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