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/* -*- Mode: IDL; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "nsISupports.idl"
interface nsIRDFResource;
interface nsIRDFNode;
/**
* Interface used in RDF to enumerate triples.
* Also used by rdfIDataSource::getAllSubjects, then aPredicate,
* aObject and aTruthValue are ignored.
*
* @status PLASMA
*/
[scriptable, function, uuid(aafea151-c271-4505-9978-a100d292800c)]
interface rdfITripleVisitor : nsISupports
{
/**
* Callback function for returning query results.
*
* @param aSubject, aPredicate, aObject describe the (sub-)arc
* @returnCode NS_RDF_STOP_VISIT to stop iterating over the query result.
* Any error code will stop the iteration as well.
*/
void visit(in nsIRDFNode aSubject, in nsIRDFResource aPredicate,
in nsIRDFNode aObject, in boolean aTruthValue);
};
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