Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 102 insertions, 0 deletions

diff --git a/connectivity/source/inc/java/GlobalRef.hxx b/connectivity/source/inc/java/GlobalRef.hxx
new file mode 100644
index 000000000..1a97bfb33
--- /dev/null
+++ b/connectivity/source/inc/java/GlobalRef.hxx
@@ -0,0 +1,102 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <java/LocalRef.hxx>
+#include <java/lang/Object.hxx>
+
+
+namespace connectivity::jdbc
+{
+    /** helper class to hold a local ref to a JNI object
+    */
+    template< typename T >
+    class GlobalRef
+    {
+    public:
+        GlobalRef()
+            :m_object( nullptr )
+        {
+        }
+
+        GlobalRef( const GlobalRef& _source )
+            :m_object( nullptr )
+        {
+            *this = _source;
+        }
+
+        GlobalRef& operator=( const GlobalRef& _source )
+        {
+            if ( &_source == this )
+                return *this;
+
+            SDBThreadAttach t;
+            set( t.env(), _source.get() );
+            return *this;
+        }
+
+        ~GlobalRef() COVERITY_NOEXCEPT_FALSE
+        {
+            reset();
+        }
+
+        void reset()
+        {
+            if ( m_object != nullptr )
+            {
+                SDBThreadAttach t;
+                t.env().DeleteGlobalRef( m_object );
+                m_object = nullptr;
+            }
+        }
+
+        void set( JNIEnv& _environment, T _object )
+        {
+            if ( m_object != nullptr )
+                _environment.DeleteGlobalRef( m_object );
+            m_object = _object;
+            if ( m_object )
+                m_object = static_cast< T >( _environment.NewGlobalRef( m_object ) );
+        }
+
+        void set( LocalRef< T >& _object )
+        {
+            set( _object.env(), _object.release() );
+        }
+
+        T get() const
+        {
+            return m_object;
+        }
+
+        bool is() const
+        {
+            return m_object != nullptr;
+        }
+
+    private:
+        T   m_object;
+    };
+
+
+} // namespace connectivity::jdbc
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */