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diff --git a/src/xmlpatterns/iterators/qdeduplicateiterator.cpp b/src/xmlpatterns/iterators/qdeduplicateiterator.cpp
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+++ b/src/xmlpatterns/iterators/qdeduplicateiterator.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (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 either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** 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 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "qdeduplicateiterator_p.h"
+
+QT_BEGIN_NAMESPACE
+
+using namespace QPatternist;
+
+DeduplicateIterator::DeduplicateIterator(const Item::List &source) : ListIterator<Item>(source)
+                                                                   , m_listPos(0)
+{
+    Q_ASSERT(!Item());
+    Q_ASSERT(!Item().isNode());
+    Q_ASSERT(!Item().isAtomicValue());
+}
+
+Item DeduplicateIterator::next()
+{
+    if(m_listPos == m_list.count())
+    {
+        m_current.reset();
+        m_position = -1;
+        return Item();
+    }
+
+    Item next(m_list.at(m_listPos));
+
+    while(next.asNode().is(m_current.asNode()))
+    {
+        ++m_listPos;
+        if(m_listPos == m_list.count())
+        {
+            m_current.reset();
+            m_position = -1;
+            return Item();
+        }
+        else
+            next = m_list.at(m_listPos);
+    }
+
+    ++m_position;
+    m_current = next;
+    return next;
+}
+
+xsInteger DeduplicateIterator::count()
+{
+    return QAbstractXmlForwardIterator<Item>::count();
+}
+
+Item::Iterator::Ptr DeduplicateIterator::copy() const
+{
+    return Item::Iterator::Ptr(new DeduplicateIterator(m_list));
+}
+
+QT_END_NAMESPACE