1 -- Created on: 1992-09-23
2 -- Created by: Christian CAILLET
3 -- Copyright (c) 1992-1999 Matra Datavision
4 -- Copyright (c) 1999-2014 OPEN CASCADE SAS
6 -- This file is part of Open CASCADE Technology software library.
8 -- This library is free software; you can redistribute it and/or modify it under
9 -- the terms of the GNU Lesser General Public License version 2.1 as published
10 -- by the Free Software Foundation, with special exception defined in the file
11 -- OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
12 -- distribution for complete text of the license and disclaimer of any warranty.
14 -- Alternatively, this file may be used under the terms of Open CASCADE
15 -- commercial license or contractual agreement.
17 class ExternalSources from IFGraph inherits GraphContent
19 ---Purpose : this class gives entities which are Source of entities of
20 -- a sub-part, but are not contained by this sub-part
22 uses Transient, EntityIterator, Graph
26 Create (agraph : Graph) returns ExternalSources;
27 ---Purpose : creates empty ExternalSources, ready to work
29 GetFromEntity (me : in out; ent : any Transient);
30 ---Purpose : adds an entity and its shared ones to the list
32 GetFromIter (me : in out; iter : EntityIterator);
33 ---Purpose : adds a list of entities (as an iterator) with shared ones
35 ResetData (me : in out);
36 ---Purpose : Allows to restart on a new data set
39 -- More-Next-Value give External Source entities
41 Evaluate (me : in out) is redefined;
42 ---Purpose : Evaluates external sources of a set of entities
44 IsEmpty(me : in out) returns Boolean;
45 ---Purpose : Returns True if no External Source are found
46 -- It means that we have a "root" set
47 -- (performs an Evaluation as necessary)