Java org.omg.CORBA Class NamedValue（JDK8）

A NamedValue object contains:

• a name -- If the NamedValue object is used to describe arguments to a request, the name will be an argument identifier specified in the OMG IDL interface definition for the operation being described.
• a value -- an Any object
• an argument mode flag -- one of the following:
  • ARG_IN.value
  • ARG_OUT.value
  • ARG_INOUT.value
  • zero -- if this NamedValue object represents a property in a Context object rather than a parameter or return value

The class NamedValue has three methods, which access its fields. The following code fragment demonstrates creating a NamedValue object and then accessing its fields:

    ORB orb = ORB.init(args, null);
    String s = "argument_1";
    org.omg.CORBA.Any myAny = orb.create_any();
    myAny.insert_long(12345);
    int in = org.omg.CORBA.ARG_IN.value;

    org.omg.CORBA.NamedValue nv = orb.create_named_value(
        s, myAny, in);
    System.out.println("This nv name is " + nv.name());
    try {
        System.out.println("This nv value is " + nv.value().extract_long());
        System.out.println("This nv flag is " + nv.flags());
    } catch (org.omg.CORBA.BAD_OPERATION b) {
      System.out.println("extract failed");
    }
 

If this code fragment were put into a main method, the output would be something like the following:

    This nv name is argument_1
    This nv value is 12345
    This nv flag is 1
 

Note that the method value returns an Any object. In order to access the long contained in the Any object, we used the method extract_long.