Revert "Remove dead HSQLDB driver"

We cannot silently convert user data or their used file formats
and then await them to accept it or reinstall an older version.

Let us make a soft change instead of an hard (heart) break
and avoid us to been attacked with fire and forks from our users.

This reverts commit 8d381ae8d6c742a7e15bf7ad9e07b65f81728ef6.

Change-Id: Ia153640935e355771acb85cf652f8fe4c21fafbb
Reviewed-on: https://gerrit.libreoffice.org/52731
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tamás Bunth <btomi96@gmail.com>

1 files changed, 97 insertions, 0 deletions

diff --git a/connectivity/source/inc/hsqldb/HStorageMap.hxx b/connectivity/source/inc/hsqldb/HStorageMap.hxx
new file mode 100644
index 000000000000..62ae7ec3d233
--- /dev/null
+++ b/connectivity/source/inc/hsqldb/HStorageMap.hxx
@@ -0,0 +1,97 @@
+/* -*- 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: */