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-- File: TDF_IDFilter.cdl
-- ----------------
-- Author: DAUTRY Philippe
-- <fid@fox.paris1.matra-dtv.fr>
---Copyright: MATRA DATAVISION 1997
---Version: 0.0
---History: Version Date Purpose
-- 0.0 May 26 1997 Creation
class IDFilter from TDF
---Purpose: This class offers filtering services around an ID list.
uses
GUID from Standard,
IDList from TDF,
IDMap from TDF,
Attribute from TDF
-- raises
is
Create(ignoreMode : Boolean from Standard = Standard_True)
returns IDFilter from TDF;
---Purpose: Creates an ID/attribute filter based on an ID
-- list. The default mode is "ignore all but...".
--
-- This filter has 2 working mode: keep and ignore.
--
-- Ignore/Exclusive mode: all IDs are ignored except
-- these set to be kept, using Keep(). Of course, it
-- is possible set an kept ID to be ignored using
-- Ignore().
--
-- Keep/Inclusive mode: all IDs are kept except these
-- set to be ignored, using Ignore(). Of course, it
-- is possible set an ignored ID to be kept using
-- Keep().
Create(aFilter : IDFilter from TDF)
returns IDFilter from TDF
is private;
---Purpose: Private, to forbid implicit or hidden accesses to
-- the copy constructor.
-- Mode methods.
IgnoreAll(me : in out; ignore : Boolean from Standard);
---Purpose: The list of ID is cleared and the filter mode is
-- set to ignore mode if <keep> is true; false
-- otherwise.
IgnoreAll(me) returns Boolean from Standard;
---Purpose: Returns true is the mode is set to "ignore all
-- but...".
--
---C++: inline
-- Keep/Ignore methods.
Keep(me : in out; anID : GUID from Standard);
---Purpose: An attribute with <anID> as ID is to be kept and
-- the filter will answer true to the question
-- IsKept(<anID>).
Keep(me : in out; anIDList : IDList from TDF);
---Purpose: Attributes with ID owned by <anIDList> are to be kept and
-- the filter will answer true to the question
-- IsKept(<anID>) with ID from <anIDList>.
Ignore(me : in out; anID : GUID from Standard);
---Purpose: An attribute with <anID> as ID is to be ignored and
-- the filter will answer false to the question
-- IsKept(<anID>).
Ignore(me : in out; anIDList : IDList from TDF);
---Purpose: Attributes with ID owned by <anIDList> are to be
-- ignored and the filter will answer false to the
-- question IsKept(<anID>) with ID from <anIDList>.
-- Question methods.
IsKept(me; anID : GUID from Standard) returns Boolean from Standard;
---Purpose: Returns true if the ID is to be kept.
--
---C++: inline
IsKept(me; anAtt : Attribute from TDF) returns Boolean from Standard;
---Purpose: Returns true if the attribute is to be kept.
--
---C++: inline
IsIgnored(me; anID : GUID from Standard) returns Boolean from Standard;
---Purpose: Returns true if the ID is to be ignored.
--
---C++: inline
IsIgnored(me; anAtt : Attribute from TDF) returns Boolean from Standard;
---Purpose: Returns true if the attribute is to be ignored.
--
---C++: inline
-- Miscelleaneous
IDList(me; anIDList : in out IDList from TDF);
---Purpose: Copies the list of ID to be kept or ignored in
-- <anIDList>. <anIDList> is cleared before use.
Copy(me : in out; fromFilter : IDFilter from TDF);
---Purpose: Copies into <me> the contents of
-- <fromFilter>. <me> is cleared before copy.
Dump(me; anOS : in out OStream from Standard);
---Purpose: Writes the contents of <me> to <OS>.
fields
myIgnore : Boolean from Standard;
myIDMap : IDMap from TDF;
end IDFilter;
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