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DynUnionHelper.javaAPI DocJava SE 5 API3034Fri Aug 26 17:25:14 BST 2005org.omg.DynamicAny

DynUnionHelper

public abstract class DynUnionHelper extends Object
DynUnion objects support the manipulation of IDL unions. A union can have only two valid current positions:
  • zero, which denotes the discriminator
  • one, which denotes the active member
The component_count value for a union depends on the current discriminator: it is 2 for a union whose discriminator indicates a named member, and 1 otherwise.

Fields Summary
private static String
_id
private static TypeCode
__typeCode
Constructors Summary
Methods Summary
public static org.omg.DynamicAny.DynUnionextract(org.omg.CORBA.Any a)

    return read (a.create_input_stream ());
  
public static java.lang.Stringid()

    return _id;
  
public static voidinsert(org.omg.CORBA.Any a, org.omg.DynamicAny.DynUnion that)


         
  
    org.omg.CORBA.portable.OutputStream out = a.create_output_stream ();
    a.type (type ());
    write (out, that);
    a.read_value (out.create_input_stream (), type ());
  
public static org.omg.DynamicAny.DynUnionnarrow(org.omg.CORBA.Object obj)

    if (obj == null)
      return null;
    else if (obj instanceof org.omg.DynamicAny.DynUnion)
      return (org.omg.DynamicAny.DynUnion)obj;
    else if (!obj._is_a (id ()))
      throw new org.omg.CORBA.BAD_PARAM ();
    else
    {
      org.omg.CORBA.portable.Delegate delegate = ((org.omg.CORBA.portable.ObjectImpl)obj)._get_delegate ();
      org.omg.DynamicAny._DynUnionStub stub = new org.omg.DynamicAny._DynUnionStub ();
      stub._set_delegate(delegate);
      return stub;
    }
  
public static org.omg.DynamicAny.DynUnionread(org.omg.CORBA.portable.InputStream istream)

      throw new org.omg.CORBA.MARSHAL ();
  
public static synchronized org.omg.CORBA.TypeCodetype()

       
  
    if (__typeCode == null)
    {
      __typeCode = org.omg.CORBA.ORB.init ().create_interface_tc (org.omg.DynamicAny.DynUnionHelper.id (), "DynUnion");
    }
    return __typeCode;
  
public static org.omg.DynamicAny.DynUnionunchecked_narrow(org.omg.CORBA.Object obj)

    if (obj == null)
      return null;
    else if (obj instanceof org.omg.DynamicAny.DynUnion)
      return (org.omg.DynamicAny.DynUnion)obj;
    else
    {
      org.omg.CORBA.portable.Delegate delegate = ((org.omg.CORBA.portable.ObjectImpl)obj)._get_delegate ();
      org.omg.DynamicAny._DynUnionStub stub = new org.omg.DynamicAny._DynUnionStub ();
      stub._set_delegate(delegate);
      return stub;
    }
  
public static voidwrite(org.omg.CORBA.portable.OutputStream ostream, org.omg.DynamicAny.DynUnion value)

      throw new org.omg.CORBA.MARSHAL ();