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diff --git a/connectivity/source/inc/hsqldb/HStorageMap.hxx b/connectivity/source/inc/hsqldb/HStorageMap.hxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * 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/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (the "License"); you may not use this file
+ *   except in compliance with the License. You may obtain a copy of
+ *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+#ifndef INCLUDED_CONNECTIVITY_SOURCE_INC_HSQLDB_HSTORAGEMAP_HXX
+#define INCLUDED_CONNECTIVITY_SOURCE_INC_HSQLDB_HSTORAGEMAP_HXX
+
+#include <sal/config.h>
+
+#include <map>
+#include <memory>
+
+#include <com/sun/star/embed/XStorage.hpp>
+#include <com/sun/star/embed/XTransactionListener.hpp>
+#include <com/sun/star/io/XStream.hpp>
+#include <com/sun/star/io/XOutputStream.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/io/XSeekable.hpp>
+#include <jni.h>
+#include <uno/environment.hxx>
+
+namespace connectivity
+{
+
+    namespace hsqldb
+    {
+        class StreamHelper
+        {
+            css::uno::Reference< css::io::XStream>        m_xStream;
+            css::uno::Reference< css::io::XSeekable>      m_xSeek;
+            css::uno::Reference< css::io::XOutputStream>  m_xOutputStream;
+            css::uno::Reference< css::io::XInputStream>   m_xInputStream;
+        public:
+            StreamHelper(const css::uno::Reference< css::io::XStream>& _xStream);
+            ~StreamHelper();
+
+            css::uno::Reference< css::io::XInputStream> const &   getInputStream();
+            css::uno::Reference< css::io::XOutputStream> const &  getOutputStream();
+            css::uno::Reference< css::io::XSeekable> const &      getSeek();
+        };
+
+
+        typedef std::map< OUString, std::shared_ptr<StreamHelper> > TStreamMap;
+
+        struct StorageData {
+            css::uno::Reference<css::embed::XStorage> storage;
+            css::uno::Environment storageEnvironment;
+            OUString url;
+            TStreamMap streams;
+
+            css::uno::Reference<css::embed::XStorage> mapStorage() const;
+        };
+
+        typedef std::map<OUString, StorageData> TStorages;
+        /** contains all storages so far accessed.
+        */
+        class StorageContainer
+        {
+        public:
+            static OUString registerStorage(const css::uno::Reference< css::embed::XStorage>& _xStorage,const OUString& _sURL);
+            static TStorages::mapped_type getRegisteredStorage(const OUString& _sKey);
+            static OUString getRegisteredKey(const css::uno::Reference< css::embed::XStorage>& _xStorage);
+            static void revokeStorage(const OUString& _sKey,const css::uno::Reference< css::embed::XTransactionListener>& _xListener);
+
+            static TStreamMap::mapped_type registerStream(JNIEnv * env,jstring name, jstring key,sal_Int32 _nMode);
+            static void revokeStream(JNIEnv * env,jstring name, jstring key);
+            static TStreamMap::mapped_type getRegisteredStream( JNIEnv * env, jstring name, jstring key);
+
+            static OUString jstring2ustring(JNIEnv * env, jstring jstr);
+            static OUString removeURLPrefix(const OUString& _sURL,const OUString& _sFileURL);
+            static OUString removeOldURLPrefix(const OUString& _sURL);
+            static void throwJavaException(const css::uno::Exception& _aException,JNIEnv * env);
+        };
+
+    }   // namespace hsqldb
+
+
+}   // namespace connectivity
+
+
+#endif // INCLUDED_CONNECTIVITY_SOURCE_INC_HSQLDB_HSTORAGEMAP_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */