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diff --git a/src/xmlpatterns/schema/qxsdschemamerger_p.h b/src/xmlpatterns/schema/qxsdschemamerger_p.h
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+/****************************************************************************
+**
+** Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the $MODULE$ of the Qt Toolkit.
+**
+** $TROLLTECH_DUAL_LICENSE$
+**
+****************************************************************************/
+
+//
+//  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 Patternist_XsdSchemaMerger_H
+#define Patternist_XsdSchemaMerger_H
+
+#include "qxsdschema_p.h"
+
+QT_BEGIN_HEADER
+
+QT_BEGIN_NAMESPACE
+
+namespace QPatternist
+{
+    /**
+     * @short A helper class that merges two schemas into one.
+     *
+     * This class is used in XsdValidatingInstanceReader to merge the schema
+     * given in the constructor with a schema defined in the instance document
+     * via xsi:schemaLocation or xsi:noNamespaceSchema location.
+     *
+     * @ingroup Patternist_schema
+     * @author Tobias Koenig <tobias.koenig@trolltech.com>
+     */
+    class XsdSchemaMerger : public QSharedData
+    {
+        public:
+            typedef QExplicitlySharedDataPointer<XsdSchemaMerger> Ptr;
+
+            /**
+             * Creates a new schema merger object that merges @p schema with @p otherSchema.
+             */
+            XsdSchemaMerger(const XsdSchema::Ptr &schema, const XsdSchema::Ptr &otherSchema);
+
+            /**
+             * Returns the merged schema.
+             */
+            XsdSchema::Ptr mergedSchema() const;
+
+        private:
+            void merge(const XsdSchema::Ptr &schema, const XsdSchema::Ptr &otherSchema);
+
+            XsdSchema::Ptr m_mergedSchema;
+    };
+}
+
+QT_END_NAMESPACE
+
+QT_END_HEADER
+
+#endif