-- File:	Transfer_SimpleBinderOfTransient.cdl
-- Created:	Thu Jun 10 09:54:01 1993
-- Author:	Christian CAILLET
--		<cky@bravox>
---Copyright:	 Matra Datavision 1993


class SimpleBinderOfTransient  from Transfer  inherits Binder

    ---Purpose : An adapted instantiation of SimpleBinder for Transient Result,
    --           i.e. ResultType can be computed from the Result itself,
    --           instead of being static

uses CString, Type, Transient

raises TransferFailure

is

    Create returns mutable SimpleBinderOfTransient;
    ---Purpose : Creates an empty SimpleBinderOfTransient

--    IsMultiple (me) returns Boolean;
    ---Purpose : Returns True if a starting object is bound with SEVERAL
    --           results : Here, returns allways False
    --           See Binder itself

    ResultType (me) returns Type;
    ---Purpose : Returns the Effective (Dynamic) Type of the Result
    --           (Standard_Transient if no Result is defined)

    ResultTypeName (me) returns CString;
    ---Purpose : Returns the Effective Name of (Dynamic) Type of the Result
    --           (void) if no result is defined

    SetResult (me : mutable; res : any Transient)
    ---Purpose : Defines the Result
    	raises TransferFailure;
    --           Error if the Result is already used (see class Binder)

    Result (me) returns any Transient
    ---Purpose : Returns the defined Result, if there is one
    	raises TransferFailure;
    --           Error if the Result is not defined (see class Binder)
    ---C++ : return const &

    GetTypedResult (myclass; bnd : Binder; atype : Type;
    	res : out Transient) returns Boolean;
    ---Purpose : Returns a transient result according to its type (IsKind)
    --           i.e. the result itself if IsKind(atype), else searches in
    --           NextResult, until first found, then returns True
    --           If not found, returns False (res is NOT touched)
    --           
    --           This syntactic form avoids to do DownCast : if a result is
    --           found with the good type, it is loaded in <res> and can be
    --           immediately used, well initialised

fields

    theres : Transient;

end SimpleBinderOfTransient;