diff -r 000000000000 -r 1918ee327afb src/xmlpatterns/api/qresourcedelegator_p.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/xmlpatterns/api/qresourcedelegator_p.h	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,119 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtXmlPatterns module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API.  It exists purely as an
+// implementation detail.  This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+
+#ifndef QPatternist_ResourceDelegator_p_H
+#define QPatternist_ResourceDelegator_p_H
+
+#include <QSet>
+#include <QUrl>
+
+#include "qdeviceresourceloader_p.h"
+
+QT_BEGIN_HEADER
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+    /**
+     * @short Delegates to another ResourceLoader, but in case a URI is in an
+     * exception list, it delegates to a different loader.
+     *
+     * This is used for handling device variables, since when a device variable
+     * is rebound, a resource loader needs to carry that binding, while the
+     * resource loader for the other query remains as is.
+     *
+     * @since 4.5
+     * @author Frans Englich <frans.englich@nokia.com>
+     */
+    class ResourceDelegator : public DeviceResourceLoader
+    {
+    public:
+        ResourceDelegator(const QSet<QUrl> &needsOverride,
+                          const ResourceLoader::Ptr &parentLoader,
+                          const ResourceLoader::Ptr &forDeviceLoader) : m_needsOverride(needsOverride)
+                                                                      , m_parentLoader(parentLoader)
+                                                                      , m_forDeviceLoader(forDeviceLoader)
+
+        {
+            Q_ASSERT(m_parentLoader);
+        }
+
+        virtual bool isUnparsedTextAvailable(const QUrl &uri,
+                                             const QString &encoding);
+        virtual ItemType::Ptr announceUnparsedText(const QUrl &uri);
+        virtual Item openUnparsedText(const QUrl &uri,
+                                      const QString &encoding,
+                                      const ReportContext::Ptr &context,
+                                      const SourceLocationReflection *const where);
+        virtual Item openDocument(const QUrl &uri,
+                                  const ReportContext::Ptr &context);
+        virtual SequenceType::Ptr announceDocument(const QUrl &uri, const Usage usageHint);
+        virtual bool isDocumentAvailable(const QUrl &uri);
+        virtual Item::Iterator::Ptr openCollection(const QUrl &uri);
+        virtual SequenceType::Ptr announceCollection(const QUrl &uri);
+
+        /**
+         * Returns the union of the deviceURIs() that ResourceDelegator's two
+         * resource loaders has.
+         */
+        virtual QSet<QUrl> deviceURIs() const;
+
+    private:
+        const QSet<QUrl> m_needsOverride;
+        const ResourceLoader::Ptr m_parentLoader;
+        const ResourceDelegator::Ptr m_forDeviceLoader;
+    };
+}
+
+QT_END_NAMESPACE
+QT_END_HEADER
+
+#endif