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diff --git a/comphelper/inc/comphelper/proparrhlp.hxx b/comphelper/inc/comphelper/proparrhlp.hxx
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+++ b/comphelper/inc/comphelper/proparrhlp.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _COMPHELPER_PROPERTY_ARRAY_HELPER_HXX_
+#define _COMPHELPER_PROPERTY_ARRAY_HELPER_HXX_
+
+#include <comphelper/stl_types.hxx>
+#include <comphelper/propagg.hxx>
+#include <cppuhelper/propshlp.hxx>
+#include <osl/mutex.hxx>
+#include <osl/diagnose.h>
+#include <rtl/instance.hxx>
+
+namespace cppu {
+    class IPropertyArrayHelper;
+}
+
+//... namespace comphelper ................................................
+namespace comphelper
+{
+//.........................................................................
+
+    namespace staruno   = ::com::sun::star::uno;
+    namespace starbeans = ::com::sun::star::beans;
+
+
+//==================================================================
+
+template <typename TYPE> struct OPropertyArrayUsageHelperMutex
+    : public rtl::Static< ::osl::Mutex, OPropertyArrayUsageHelperMutex<TYPE> > {};
+
+
+template <class TYPE>
+class OPropertyArrayUsageHelper
+{
+protected:
+    static sal_Int32                        s_nRefCount;
+    static ::cppu::IPropertyArrayHelper*    s_pProps;
+
+public:
+    OPropertyArrayUsageHelper();
+    virtual ~OPropertyArrayUsageHelper()
+    {   // ARGHHHHHHH ..... would like to implement this after the class
+        // definition (as we do with all other methods) but SUNPRO 5 compiler
+        // (linker) doesn't like this
+        ::osl::MutexGuard aGuard(OPropertyArrayUsageHelperMutex<TYPE>::get());
+        OSL_ENSURE(s_nRefCount > 0, "OPropertyArrayUsageHelper::~OPropertyArrayUsageHelper : suspicious call : have a refcount of 0 !");
+        if (!--s_nRefCount)
+        {
+            delete s_pProps;
+            s_pProps = NULL;
+        }
+    }
+
+    /** call this in the getInfoHelper method of your derived class. The method returns the array helper of the
+        class, which is created if neccessary.
+    */
+    ::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 Mutex acquired.
+        <BR>
+        as long as IPropertyArrayHelper has no virtual destructor, the implementation of ~OPropertyArrayUsageHelper
+        assumes that you created an ::cppu::OPropertyArrayHelper when deleting s_pProps.
+        @return                         an pointer to the newly created array helper. Must not be NULL.
+    */
+    virtual ::cppu::IPropertyArrayHelper* createArrayHelper( ) const = 0;
+};
+
+//==================================================================
+/** a OPropertyArrayUsageHelper which will create an OPropertyArrayAggregationHelper
+*/
+template <class TYPE>
+class OAggregationArrayUsageHelper: public OPropertyArrayUsageHelper<TYPE>
+{
+protected:
+    /** overwrite this in your derived class. initialize the two sequences with your and your aggregate's
+        properties.
+        <BR>
+        The method gets called with Mutex acquired.
+        @param      _rProps             out parameter to be filled with the property descriptions of your own class
+        @param      _rAggregateProps    out parameter to be filled with the properties of your aggregate.
+    */
+    virtual void fillProperties(
+        ::com::sun::star::uno::Sequence< ::com::sun::star::beans::Property >& /* [out] */ _rProps,
+        ::com::sun::star::uno::Sequence< ::com::sun::star::beans::Property >& /* [out] */ _rAggregateProps
+        ) const = 0;
+
+    /** creates an OPropertyArrayAggregationHelper filled with properties for which's initialization
+        fillProperties is called. getInfoService and getFirstAggregateId may be overwritten to determine
+        the additional parameters of the OPropertyArrayAggregationHelper.
+    */
+    virtual ::cppu::IPropertyArrayHelper* createArrayHelper( ) const;
+
+    /** the return value is used for the construction of the OPropertyArrayAggregationHelper.
+        Beware of the lifetime of the returned object, as it has to exist 'til the last instance
+        of this class dies.
+    */
+    virtual IPropertyInfoService* getInfoService() const { return NULL; }
+
+    /** the return value is used for the construction of the OPropertyArrayAggregationHelper.
+    */
+    virtual sal_Int32 getFirstAggregateId() const { return DEFAULT_AGGREGATE_PROPERTY_ID; }
+};
+
+//------------------------------------------------------------------
+template<class TYPE>
+sal_Int32                       OPropertyArrayUsageHelper< TYPE >::s_nRefCount  = 0;
+
+template<class TYPE>
+::cppu::IPropertyArrayHelper*   OPropertyArrayUsageHelper< TYPE >::s_pProps = NULL;
+
+//------------------------------------------------------------------
+template <class TYPE>
+OPropertyArrayUsageHelper<TYPE>::OPropertyArrayUsageHelper()
+{
+    ::osl::MutexGuard aGuard(OPropertyArrayUsageHelperMutex<TYPE>::get());
+    ++s_nRefCount;
+}
+
+//------------------------------------------------------------------
+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(OPropertyArrayUsageHelperMutex<TYPE>::get());
+        if (!s_pProps)
+        {
+            s_pProps = createArrayHelper();
+            OSL_ENSURE(s_pProps, "OPropertyArrayUsageHelper::getArrayHelper : createArrayHelper returned nonsense !");
+        }
+    }
+    return s_pProps;
+}
+
+//------------------------------------------------------------------
+template <class TYPE> inline
+::cppu::IPropertyArrayHelper* OAggregationArrayUsageHelper<TYPE>::createArrayHelper() const
+{
+    ::com::sun::star::uno::Sequence< ::com::sun::star::beans::Property > aProps;
+    ::com::sun::star::uno::Sequence< ::com::sun::star::beans::Property > aAggregateProps;
+    fillProperties(aProps, aAggregateProps);
+    OSL_ENSURE(aProps.getLength(), "OAggregationArrayUsageHelper::createArrayHelper : fillProperties returned nonsense !");
+    return new OPropertyArrayAggregationHelper(aProps, aAggregateProps, getInfoService(), getFirstAggregateId());
+}
+
+//.........................................................................
+}
+//... namespace comphelper ................................................
+
+#endif // _COMPHELPER_PROPERTY_ARRAY_HELPER_HXX_
+
+