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diff --git a/ucb/source/ucp/tdoc/tdoc_storage.hxx b/ucb/source/ucp/tdoc/tdoc_storage.hxx
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@@ -0,0 +1,172 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef INCLUDED_TDOC_STORAGE_HXX
+#define INCLUDED_TDOC_STORAGE_HXX
+
+#include <map>
+
+#include "osl/mutex.hxx"
+#include "rtl/ref.hxx"
+#include "salhelper/simplereferenceobject.hxx"
+
+#include "com/sun/star/embed/XStorage.hpp"
+
+namespace tdoc_ucp {
+
+    enum StorageAccessMode
+    {
+        READ, // Note: might be writable as well
+        READ_WRITE_NOCREATE,
+        READ_WRITE_CREATE
+    };
+
+    class Storage;
+    class OfficeDocumentsManager;
+
+    class StorageElementFactory : public salhelper::SimpleReferenceObject
+    {
+    public:
+        StorageElementFactory(
+            const com::sun::star::uno::Reference<
+                com::sun::star::lang::XMultiServiceFactory > & xSMgr,
+            const rtl::Reference< OfficeDocumentsManager > & xDocsMgr );
+        ~StorageElementFactory();
+
+        com::sun::star::uno::Reference< com::sun::star::embed::XStorage >
+        createTemporaryStorage()
+            throw ( com::sun::star::uno::Exception,
+                    com::sun::star::uno::RuntimeException );
+
+        com::sun::star::uno::Reference< com::sun::star::embed::XStorage >
+        createStorage( const rtl::OUString & rUri, StorageAccessMode eMode )
+            throw ( com::sun::star::embed::InvalidStorageException,
+                    com::sun::star::lang::IllegalArgumentException,
+                    com::sun::star::io::IOException,
+                    com::sun::star::embed::StorageWrappedTargetException,
+                    com::sun::star::uno::RuntimeException );
+
+        com::sun::star::uno::Reference< com::sun::star::io::XInputStream >
+        createInputStream( const rtl::OUString & rUri,
+                           const rtl::OUString & rPassword )
+            throw ( com::sun::star::embed::InvalidStorageException,
+                    com::sun::star::lang::IllegalArgumentException,
+                    com::sun::star::io::IOException,
+                    com::sun::star::embed::StorageWrappedTargetException,
+                    com::sun::star::packages::WrongPasswordException,
+                    com::sun::star::uno::RuntimeException );
+
+        com::sun::star::uno::Reference< com::sun::star::io::XOutputStream >
+        createOutputStream( const rtl::OUString & rUri,
+                            const rtl::OUString & rPassword,
+                            bool bTruncate )
+            throw ( com::sun::star::embed::InvalidStorageException,
+                    com::sun::star::lang::IllegalArgumentException,
+                    com::sun::star::io::IOException,
+                    com::sun::star::embed::StorageWrappedTargetException,
+                    com::sun::star::packages::WrongPasswordException,
+                    com::sun::star::uno::RuntimeException );
+
+        com::sun::star::uno::Reference< com::sun::star::io::XStream >
+        createStream( const rtl::OUString & rUri,
+                      const rtl::OUString & rPassword,
+                      bool bTruncate )
+            throw ( com::sun::star::embed::InvalidStorageException,
+                    com::sun::star::lang::IllegalArgumentException,
+                    com::sun::star::io::IOException,
+                    com::sun::star::embed::StorageWrappedTargetException,
+                    com::sun::star::packages::WrongPasswordException,
+                    com::sun::star::uno::RuntimeException );
+
+    private:
+        friend class Storage;
+
+        void releaseElement( Storage * pElement ) SAL_THROW(());
+
+        com::sun::star::uno::Reference< com::sun::star::embed::XStorage >
+        queryParentStorage( const rtl::OUString & rUri,
+                            StorageAccessMode eMode )
+            throw ( com::sun::star::embed::InvalidStorageException,
+                    com::sun::star::lang::IllegalArgumentException,
+                    com::sun::star::io::IOException,
+                    com::sun::star::embed::StorageWrappedTargetException,
+                    com::sun::star::uno::RuntimeException );
+
+        com::sun::star::uno::Reference< com::sun::star::embed::XStorage >
+        queryStorage( const com::sun::star::uno::Reference<
+                        com::sun::star::embed::XStorage > & xParentStorage,
+                      const rtl::OUString & rUri,
+                      StorageAccessMode eMode )
+            throw ( com::sun::star::embed::InvalidStorageException,
+                    com::sun::star::lang::IllegalArgumentException,
+                    com::sun::star::io::IOException,
+                    com::sun::star::embed::StorageWrappedTargetException,
+                    com::sun::star::uno::RuntimeException );
+
+        com::sun::star::uno::Reference< com::sun::star::io::XStream >
+        queryStream( const com::sun::star::uno::Reference<
+                        com::sun::star::embed::XStorage > & xParentStorage,
+                     const rtl::OUString & rPassword,
+                     const rtl::OUString & rUri,
+                     StorageAccessMode eMode,
+                     bool bTruncate /* ignored for read-only streams */ )
+            throw ( com::sun::star::embed::InvalidStorageException,
+                    com::sun::star::lang::IllegalArgumentException,
+                    com::sun::star::io::IOException,
+                    com::sun::star::embed::StorageWrappedTargetException,
+                    com::sun::star::packages::WrongPasswordException,
+                    com::sun::star::uno::RuntimeException );
+
+        struct ltstrbool
+        {
+            bool operator()(
+                const std::pair< rtl::OUString, bool > & s1,
+                const std::pair< rtl::OUString, bool > & s2 ) const
+            {
+                if ( s1.first < s2.first )
+                    return true;
+                else if ( s1.first == s2.first )
+                    return ( !s1.second && s2.second );
+                else
+                    return false;
+            }
+        };
+
+        // key: pair< storageuri, iswritable >
+        typedef std::map<
+            std::pair< rtl::OUString, bool >, Storage *, ltstrbool > StorageMap;
+
+        StorageMap m_aMap;
+        osl::Mutex m_aMutex;
+        rtl::Reference< OfficeDocumentsManager > m_xDocsMgr;
+        com::sun::star::uno::Reference<
+            com::sun::star::lang::XMultiServiceFactory > m_xSMgr;
+    };
+
+} // namespace tdoc_ucp
+
+#endif /* !INCLUDED_TDOC_STORAGE_HXX */