如何处理Lucene.net中的关系更新？

I'm developing an application that uses Lucene.net, and there's a use case I don't know how to handle. Let's say I have 'books' and 'authors', which correspond to 2 different tables and objects. If I create an author "John Doe" and then create a book, I will also index the author for that book; that allows me do a search like "title author:Doe", and it will return all books.I'm developing an application that uses Lucene.