/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 * 
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: xmloff_SinglePropertySetInfoCache.cxx,v $
 * $Revision: 1.3 $
 *
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 *
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 * only, as published by the Free Software Foundation.
 *
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
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 *
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#ifndef _COM_SUN_STAR_LANG_XTYPEPROVIDER_HPP_
#include <com/sun/star/lang/XTypeProvider.hpp>
#endif
#ifndef _CPPUHELPER_WEAKREF_HXX_ 
#include <cppuhelper/weakref.hxx>
#endif

#ifndef _XMLOFF_SINGLEPROPERTYSETINFOCACHE_HXX
#include "SinglePropertySetInfoCache.hxx"
#endif
namespace binfilter {

using namespace ::com::sun::star::uno;
using ::com::sun::star::lang::XTypeProvider;
using ::com::sun::star::beans::XPropertySet;
using ::com::sun::star::beans::XPropertySetInfo;

sal_Bool SinglePropertySetInfoCache::hasProperty( 
		const Reference< XPropertySet >& rPropSet,
		Reference< XPropertySetInfo >& rPropSetInfo )
{
	if( !rPropSetInfo.is() )
		rPropSetInfo = rPropSet->getPropertySetInfo();
	sal_Bool bRet = sal_False, bValid = sal_False;
	Reference < XTypeProvider > xTypeProv( rPropSet, UNO_QUERY );
	Sequence< sal_Int8 > aImplId;
	if( xTypeProv.is() )
	{
		aImplId = xTypeProv->getImplementationId();
		if( aImplId.getLength() == 16 )
		{
			// The key must not be created outside this block, because it
			// keeps a reference to the property set info.
			PropertySetInfoKey aKey( rPropSetInfo, aImplId );
			iterator aIter = find( aKey );
			if( aIter != end() )
			{
				bRet = (*aIter).second;
				bValid = sal_True;
			}
		}
	}
	if( !bValid )
	{
		bRet = rPropSetInfo->hasPropertyByName( sName );
		if( xTypeProv.is() && aImplId.getLength() == 16 )
		{
			// Check whether the property set info is destroyed if it is
			// assigned to a weak reference only. If it is destroyed, then
			// every instance of getPropertySetInfo returns a new object.
			// Such property set infos must not be cached.
			WeakReference < XPropertySetInfo > xWeakInfo( rPropSetInfo );
			rPropSetInfo = 0;
			rPropSetInfo = xWeakInfo;
			if( rPropSetInfo.is() )
			{
				PropertySetInfoKey aKey( rPropSetInfo, aImplId );
				value_type aValue( aKey, bRet );
				insert( aValue );
			}
		}
	}

	return bRet;
}
}//end of namespace binfilter
