/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
 *
 * The contents of this file are subject to the Netscape Public
 * License Version 1.1 (the "License"); you may not use this file
 * except in compliance with the License. You may obtain a copy of
 * the License at http://www.mozilla.org/NPL/
 *
 * Software distributed under the License is distributed on an "AS
 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
 * implied. See the License for the specific language governing
 * rights and limitations under the License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Netscape
 * Communications Corporation.  Portions created by Netscape are
 * Copyright (C) 1998 Netscape Communications Corporation. All
 * Rights Reserved.
 *
 * Contributor(s): 
 */

#include "nsIRDFDataSource.idl"

// An nsIRDFCompositeDataSource composes individual data sources, providing
// the illusion of a single, coherent RDF graph.
[scriptable, uuid(96343820-307C-11D2-BC15-00805F912FE7)]
interface nsIRDFCompositeDataSource : nsIRDFDataSource {

    attribute boolean	allowNegativeAssertions;	// true by default
    attribute boolean	coalesceDuplicateArcs;		// true by default

    // Add a datasource the the database.
    void AddDataSource(in nsIRDFDataSource aDataSource);

    // Remove a datasource from the database
    void RemoveDataSource(in nsIRDFDataSource aDataSource);
};

%{C++
extern nsresult
NS_NewRDFCompositeDataSource(nsIRDFCompositeDataSource** result);
%}

