Bug 164586 [compatibility]Preview attached report throws multiple exception[0901]
data/org.eclipse.birt.report.data.adapter/src/org/eclipse/birt/report/data/adapter/internal/adapter/DataAdapterUtil.java
*/
	public static Map getExtensionProperties( ReportElementHandle dataHandle,
			List driverPropList )
	{
		if ( driverPropList == null || driverPropList.isEmpty( ) )
			return null; 
		Map properties = new HashMap( );
		Iterator elmtIter = driverPropList.iterator( );
		while ( elmtIter.hasNext( ) )
		{
			IPropertyDefn modelExtProp = ( IPropertyDefn ) elmtIter.next( );
			
			String propName = modelExtProp.getName( );
			assert ( propName != null && propName.length( ) > 0 );
			
			Object propValueObj = dataHandle.getProperty( modelExtProp
					.getName( ) );
			/*
			 * An ODA consumer does not distinguish whether a property value is
			 * not set or explicitly set to null. Its handling is pushed down to
			 * the underlying data provider.
			 */
			String propValue = ( propValueObj == null ) ? null : propValueObj
					.toString( );
			properties.put( propName, propValue );
		}
		return properties;
	}
}