-- File:	Interface_CopyMap.cdl
-- Created:	Tue Mar 16 12:19:37 1993
-- Author:	Christian CAILLET
--		<cky@phylox>
---Copyright:	 Matra Datavision 1993


class CopyMap  from Interface  inherits CopyControl

    ---Purpose : Manages a Map for the need of single Transfers, such as Copies
    --           In such transfer, Starting Entities are read from a unique
    --           Starting Model, and each transferred Entity is bound to one
    --           and only one Result, which cannot be changed later.

uses Transient,  Array1OfTransient from TColStd,    InterfaceModel

raises InterfaceError

is

    Create (amodel : InterfaceModel) returns mutable CopyMap;
    ---Purpose : Creates a CopyMap adapted to work from a Model

    Clear (me : mutable);
    ---Purpose : Clears Transfer List. Gets Ready to begin another Transfer

    Model (me) returns InterfaceModel  is static;
    ---Purpose : Returns the InterfaceModel used at Creation time

    Bind (me : mutable; ent : Transient; res : mutable Transient)
    ---Purpose : Binds a Starting Entity identified by its Number <num> in the
    --           Starting Model, to a Result of Transfer <res>
    	raises InterfaceError;
    --           Error if <num> is already bound to a result, or is out of range

    Search (me; ent : Transient; res : out mutable Transient)
    	returns Boolean;
    ---Purpose : Search for the result of a Starting Object (i.e. an Entity,
    --           identified by its Number <num> in the Starting Model)
    --           Returns True  if a  Result is Bound (and fills <res>)
    --           Returns False if no result is Bound (and nullifies <res>)

fields

    themod : InterfaceModel;       -- Starting Model
    theres : Array1OfTransient;    -- list of bound Results

end CopyMap;