8.6 Tie Delegation Model

• The Tie model is an alternative to the typical inheritance model
• The tie model frees the implementation to inherit from arbitrary interfaces
• The Tie model introduces a special class with two constructors that have a delegate, and possibly a POA, for arguments.

  InterfacePOATie ( Module.InterfaceOperations delegate )
  InterfacePOATie ( InterfaceOperations delegate , org.omg.PortableServer.POA poa )

• Two compilation are required for the idl file: for the regular stubs and skeletons, and for an extra Tie file.

  idlj -fall file.idl
  idlj -fallTie file.idl