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From Nino_87 <nino_...@hotmail.it>
Subject Lucene Hierarchial Taxonomy Search
Date Tue, 17 Dec 2013 13:48:39 GMT
Hi,
I've a set of documents annotated with hierarchial taxonomy tags, E.g. 

[ 
{ 
    "id": 1, 
    "title": "a funny book", 
    "authors": ["Jean Bon", "Alex Terieur"], 
    "book_category": "/novel/comedy/new" 
}, 
{ 
    "id": 2, 
    "title": "a dramatic book", 
    "authors": ["Alex Terieur"], 
    "book_category": "/novel/drama" 
}, 
{ 
    "id": 3, 
    "title": "A hilarious book", 
    "authors": ["Marc Assin", "Harry Covert"], 
    "book_category": "/novel/comedy" 
}, 
{ 
    "id": 4, 
    "title": "A sad story", 
    "authors": ["Gerard Menvusa", "Alex Terieur"], 
    "book_category": "/novel/drama" 
}, 
{ 
    "id": 5, 
    "title": "A very sad story", 
    "authors": ["Gerard Menvusa", "Alain Terieur"], 
    "book_category": "/novel" 
}] 
I need to search book by "book_category". The search must return books that
match the query category exactly or partially (with a defined depth
threshold) and give them a different score in function of the match degree. 

E.g.: query "book_category=/novel/comedy" and "depth_threshold=1" must
return books with book_category=/novel/comedy (score=100%), /novel and
/novel/comedy/new (score < 100%). 

I tried the TopScoreDocCollector in the search, but it returns the book
which book_category at least contains the query category, and gives them the
same score. 

How can i obtain this search function that returns also the more general
category and gives different match scores to the results? 

P.S.: i don't need a faced search. 

Thanks



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