private class TextProvider: IResourceTextProvider

        {

            public bool ProcessResourceText( IResource res, IResourceTextConsumer consumer )

            {

consumer.AddDocumentFragment( res.Id, res.GetPropText( "Name" ),

DocumentSection.SubjectSection );

                foreach( IResource author in res.GetLinksOfType( null, PropTypes.BookAuthor ) )

                {

consumer.AddDocumentFragment( res.Id, author.DisplayName,

DocumentSection.SourceSection );

                }

consumer.AddDocumentFragment( res.Id, res.GetPropText( PropTypes.Isbn ) );

return true;               

            }

        }