1 files changed, 131 insertions, 0 deletions
diff --git a/connectivity/source/drivers/firebird/SubComponent.hxx b/connectivity/source/drivers/firebird/SubComponent.hxx
new file mode 100644
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+++ b/connectivity/source/drivers/firebird/SubComponent.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_DRIVERS_FIREBIRD_SUBCOMPONENT_HXX
+#define INCLUDED_CONNECTIVITY_SOURCE_DRIVERS_FIREBIRD_SUBCOMPONENT_HXX
+
+#include <cppuhelper/propshlp.hxx>
+#include <osl/diagnose.h>
+#include <osl/mutex.hxx>
+
+namespace cppu {
+    class IPropertyArrayHelper;
+}
+
+namespace com
+{
+    namespace sun
+    {
+        namespace star
+        {
+            namespace lang
+            {
+                class XComponent;
+            }
+        }
+    }
+}
+namespace connectivity
+{
+
+    namespace firebird
+    {
+        /// @throws css::lang::DisposedException
+        void checkDisposed(bool _bThrow);
+
+
+        template <class TYPE>
+        class OPropertyArrayUsageHelper
+        {
+        protected:
+            static sal_Int32                        s_nRefCount;
+            static ::cppu::IPropertyArrayHelper*    s_pProps;
+            static ::osl::Mutex                     s_aMutex;
+
+        public:
+            OPropertyArrayUsageHelper();
+            virtual ~OPropertyArrayUsageHelper();
+
+            /** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
+                class, which is created if necessary.
+            */
+            ::cppu::IPropertyArrayHelper*   getArrayHelper();
+
+        protected:
+            /** used to implement the creation of the array helper which is shared amongst all instances of the class.
+                This method needs to be implemented in derived classes.
+                <BR>
+                The method gets called with s_aMutex acquired.
+                @return                         a pointer to the newly created array helper. Must not be NULL.
+            */
+            virtual ::cppu::IPropertyArrayHelper* createArrayHelper( ) const = 0;
+        };
+
+        template<class TYPE>
+        sal_Int32                       OPropertyArrayUsageHelper< TYPE >::s_nRefCount  = 0;
+
+        template<class TYPE>
+        ::cppu::IPropertyArrayHelper*   OPropertyArrayUsageHelper< TYPE >::s_pProps = nullptr;
+
+        template<class TYPE>
+        ::osl::Mutex                    OPropertyArrayUsageHelper< TYPE >::s_aMutex;
+
+
+        template <class TYPE>
+        OPropertyArrayUsageHelper<TYPE>::OPropertyArrayUsageHelper()
+        {
+            ::osl::MutexGuard aGuard(s_aMutex);
+            ++s_nRefCount;
+        }
+
+
+        template <class TYPE>
+        OPropertyArrayUsageHelper<TYPE>::~OPropertyArrayUsageHelper()
+        {
+            ::osl::MutexGuard aGuard(s_aMutex);
+            OSL_ENSURE(s_nRefCount > 0, "OPropertyArrayUsageHelper::~OPropertyArrayUsageHelper : suspicious call : have a refcount of 0 !");
+            if (!--s_nRefCount)
+            {
+                delete s_pProps;
+                s_pProps = nullptr;
+            }
+        }
+
+
+        template <class TYPE>
+        ::cppu::IPropertyArrayHelper* OPropertyArrayUsageHelper<TYPE>::getArrayHelper()
+        {
+            OSL_ENSURE(s_nRefCount, "OPropertyArrayUsageHelper::getArrayHelper : suspicious call : have a refcount of 0 !");
+            if (!s_pProps)
+            {
+                ::osl::MutexGuard aGuard(s_aMutex);
+                if (!s_pProps)
+                {
+                    s_pProps = createArrayHelper();
+                    OSL_ENSURE(s_pProps, "OPropertyArrayUsageHelper::getArrayHelper : createArrayHelper returned nonsense !");
+                }
+            }
+            return s_pProps;
+        }
+
+    }
+}
+#endif // INCLUDED_CONNECTIVITY_SOURCE_DRIVERS_FIREBIRD_SUBCOMPONENT_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */