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RSetDict.4gl
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1996-07-02
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-----------------------------------------------------------------------------
--
-- Copyright (c) 1995 by Westmount Technology B.V., Delft, The Netherlands.
--
-- This software is furnished under a license and may be used only in
-- accordance with the terms of such license and with the inclusion of
-- the above copyright notice. This software or any other copies thereof
-- may not be provided or otherwise made available to any other person.
-- No title to and ownership of the software is hereby transferred.
--
-- The information in this software is subject to change without notice
-- and should not be construed as a commitment by Westmount Technology B.V.
--
-----------------------------------------------------------------------------
--
-- File : @(#)RSetDict.4gl 1.1
-- Author :
-- Original date : 3-2-1995
-- Description : A simple RSetDict (map of key-value pairs)
-- Key and value are ixObject references
--
-----------------------------------------------------------------------------
INCLUDE "RSetDict.4gh"
FUNCTION RSetDict::RSetDict()
LET dict = NEW RefDict()
END FUNCTION
FUNCTION RSetDict::add(key ixObject, value ixObject) RETURNING BOOLEAN
VARIABLE theRefSet RefSet = dict.get(key) CAST RefSet
IF theRefSet IS NULL THEN
LET theRefSet = NEW RefSet()
CALL dict.set(key, theRefSet)
END IF
RETURN theRefSet.add(value)
END FUNCTION
FUNCTION RSetDict::get(key ixObject) RETURNING RefSet
RETURN dict.get(key) CAST RefSet
END FUNCTION
FUNCTION RSetDict::remove(key ixObject, value ixObject) RETURNING VOID
VARIABLE theRefSet RefSet = dict.get(key) CAST RefSet
IF theRefSet IS NULL THEN
RETURN
END IF
CALL theRefSet.remove(value)
END FUNCTION
FUNCTION RSetDict::isPresent(key ixObject) RETURNING BOOLEAN
RETURN dict.isPresent(key)
END FUNCTION
FUNCTION RSetDict::size() RETURNING INTEGER
RETURN dict.size()
END FUNCTION
FUNCTION RSetDict::firstKey() RETURNING ixObject
RETURN dict.firstKey()
END FUNCTION
FUNCTION RSetDict::nextKey() RETURNING ixObject
RETURN dict.nextKey()
END FUNCTION
FUNCTION RSetDict::firstValue() RETURNING RefSet
RETURN dict.firstValue() CAST RefSet
END FUNCTION
FUNCTION RSetDict::nextValue() RETURNING RefSet
RETURN dict.nextValue() CAST RefSet
END FUNCTION