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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit Object_.List;
interface
uses
Collection.List.Array_,
Object_.Reference.Type_;
type
TObjectList<TElement: class> = class(TArrayList<TElement>)
private
function GetReferenceType(): TReferenceType;
procedure SetReferenceType(const Value: TReferenceType);
public
constructor Create(); override;
property ReferenceType: TReferenceType read GetReferenceType write SetReferenceType;
end;
implementation
uses
Object_.Comparator.Identity,
Object_.List.Exception,
Object_.Reference.Owner,
Reference.User;
{ TObjectList<ElementType> }
constructor TObjectList<TElement>.Create();
begin
inherited Create();
ElementManager := TReferenceOwner<TElement>.Create();
Comparator := TObjectIdentityComparator<TElement>.Create();
RejectUnassigned := True;
end;
function TObjectList<TElement>.GetReferenceType(): TReferenceType;
begin
if ElementManager is TReferenceOwner<TElement> then
Result := TReferenceType.Owns
else if ElementManager is TReferenceUser<TElement> then
Result := TReferenceType.RefersTo
else
raise EObjectList.Create('Unknown element manager');
end;
procedure TObjectList<TElement>.SetReferenceType(const Value: TReferenceType);
begin
case Value of
TReferenceType.RefersTo:
ElementManager := TReferenceUser<TElement>.Create();
TReferenceType.Owns:
ElementManager := TReferenceOwner<TElement>.Create();
else
raise EObjectList.Create('Unknown reference type');
end;
end;
end.
|