问题
I have multiple lucene.net indexes that I would need to search on for a query string. So will I need to open a new IndexSearcher on all these indexes or can I achieve this with a single IndexSearcher?
Thanks
回答1:
It can be accomplished using the MultiSearcher.
It implements the Searchable interface over multiple subsearchers. If you only need methods from the Searchable interface it will be just like a regular IndexSearcher to you.
If you need to access the underlying searchers that found a document, you can use the subSearcher(int) and subDoc(int) methods.
http://lucene.apache.org/java/2_9_4/api/core/org/apache/lucene/search/MultiSearcher.html
来源：https://stackoverflow.com/questions/7677845/multiple-indexes-search-in-lucene-net