1 Reply Latest reply: Sep 23, 2011 9:27 PM by EJP RSS

    Basic problem in JNDI file system service provider

      Hi All,

      I knew this is trivial problem to all. I'm missing some minor setup to clear this error message.
      "javax.naming.OperationNotSupportedException : can only bind References or Referanceable objects"

      I'm somewhat newbie to the JNDI world. I have downloaded basic smaple code from internet and downloaded fscontext.jar and providerurl.jar and jndi.jar files and set in the classpath. Pls note i'm not using any other app server here.

      import javax.naming.Context;
      import javax.naming.InitialContext;
      import javax.naming.NamingException;
      import java.util.Hashtable;
      public Fruit {
      Fruit(String f) { System.out.println("C-tor " + f);
      public class Resolve {
      public static void main(String argv[]) {
      // The user should provide a file to lookup
      if (argv.length != 1) {
      System.err.println("Usage: java Resolve ");

      String name = argv[0];

      // Here we use the file system service provider
      Hashtable env = new Hashtable();
      env.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.fscontext.RefFSContextFactory");
      try {
      Context ctx = new InitialContext(env);
      Fruit f = new Fruit(name);
      ctx.rebind(name, f);
      Fruit ff = (Fruit)ctx.lookup(name);
      System.out.println(name + " is bound to: " + ff);
      } catch (NamingException e) {
      System.err.println("Problem " + name + ": " + e);

        • 1. Re: Basic problem in JNDI file system service provider
          javax.naming.OperationNotSupportedException : can only bind References or Referanceable object
          The message is pretty clear. You can't bind arbitrary objects, you have to wrap them in something the provider will accept: in this case, a Reference or Referenceable. See the JNDI API.

          But I wouldn't spend any more time with the JNDI FS provider. It's really just a toy, not intended to be taken seriously. It might be useful as a pretend LDAP server until you get one, but really, just get one.