1 files changed, 114 insertions, 0 deletions
diff --git a/dbaccess/source/core/misc/apitools.cxx b/dbaccess/source/core/misc/apitools.cxx
new file mode 100644
index 000000000..efec92cf5
--- /dev/null
+++ b/dbaccess/source/core/misc/apitools.cxx
@@ -0,0 +1,114 @@
+/* -*- 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 .
+ */
+
+#include <apitools.hxx>
+#include <cppuhelper/typeprovider.hxx>
+#include <sal/log.hxx>
+
+using namespace ::com::sun::star::uno;
+using namespace ::com::sun::star::lang;
+using namespace cppu;
+using namespace osl;
+
+// various helper functions
+// OSubComponent
+OSubComponent::OSubComponent(Mutex& _rMutex, const Reference< XInterface > & xParent)
+              :OComponentHelper(_rMutex)
+              ,m_xParent(xParent)
+{
+
+}
+
+OSubComponent::~OSubComponent()
+{
+    m_xParent = nullptr;
+
+}
+
+// css::lang::XTypeProvider
+Sequence< Type > OSubComponent::getTypes()
+{
+    OTypeCollection aTypes(cppu::UnoType<XComponent>::get(),
+                           cppu::UnoType<XTypeProvider>::get(),
+                           cppu::UnoType<XWeak>::get());
+
+    return aTypes.getTypes();
+}
+
+// XInterface
+
+void OSubComponent::release() noexcept
+{
+    Reference< XInterface > x( xDelegator );
+    if (! x.is())
+    {
+        if (osl_atomic_decrement( &m_refCount ) == 0 )
+        {
+            if (! rBHelper.bDisposed)
+            {
+                // *before* again incrementing our ref count, ensure that our weak connection point
+                // will not create references to us anymore (via XAdapter::queryAdapted)
+                disposeWeakConnectionPoint();
+
+                Reference< XInterface > xHoldAlive( *this );
+                // remember the parent
+                Reference< XInterface > xParent;
+                {
+                    MutexGuard aGuard( rBHelper.rMutex );
+                    xParent = m_xParent;
+                    m_xParent = nullptr;
+                }
+
+                SAL_WARN_IF( m_refCount != 1, "dbaccess.core", "OSubComponent::release: invalid ref count (before dispose)!" );
+
+                // First dispose
+                dispose();
+
+                // only the alive ref holds the object
+                SAL_WARN_IF( m_refCount != 1, "dbaccess.core", "OSubComponent::release: invalid ref count (after dispose)!" );
+
+                // release the parent in the ~
+                if (xParent.is())
+                {
+                    MutexGuard aGuard( rBHelper.rMutex );
+                    m_xParent = xParent;
+                }
+
+                // destroy the object if xHoldAlive decrement the refcount to 0
+                return;
+            }
+        }
+        // restore the reference count
+        osl_atomic_increment( &m_refCount );
+    }
+
+    // as we cover the job of the componenthelper we use the ...
+    OWeakAggObject::release();
+}
+
+Any OSubComponent::queryInterface( const Type & rType )
+{
+    Any aReturn;
+    if (!rType.equals(cppu::UnoType<XAggregation>::get()))
+        aReturn = OComponentHelper::queryInterface(rType);
+
+    return aReturn;
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */