gecko-dev/dom/xul/templates/nsRDFQuery.cpp

51 строка
1.4 KiB
C++

/* -*- Mode: C++; 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 "nscore.h"
#include "nsCOMPtr.h"
#include "nsXULTemplateQueryProcessorRDF.h"
#include "nsRDFQuery.h"
NS_IMPL_CYCLE_COLLECTION(nsRDFQuery, mQueryNode)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(nsRDFQuery)
NS_INTERFACE_MAP_ENTRY(nsITemplateRDFQuery)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(nsRDFQuery)
NS_IMPL_CYCLE_COLLECTING_RELEASE(nsRDFQuery)
void
nsRDFQuery::Finish()
{
// the template builder is going away and the query processor likely as
// well. Clear the reference to avoid calling it.
mProcessor = nullptr;
mCachedResults = nullptr;
}
nsresult
nsRDFQuery::SetCachedResults(nsXULTemplateQueryProcessorRDF* aProcessor,
const InstantiationSet& aInstantiations)
{
mCachedResults = new nsXULTemplateResultSetRDF(aProcessor, this, &aInstantiations);
if (! mCachedResults)
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
void
nsRDFQuery::UseCachedResults(nsISimpleEnumerator** aResults)
{
*aResults = mCachedResults;
NS_IF_ADDREF(*aResults);
mCachedResults = nullptr;
}