Dear Hibernate Community,

Is there any runtime fast method to check if one given JPA entity matches given Hibernate Search query?

Use case: we have a query "refactor" and entity Book{title, description, author...}. We have 500 000 books in database but we allready narrowed search set to 10 books (e.g. "Refactoring to patterns", "Happy refactoring", "Clean code" etc.).
We would like to check which of these 10 books matches the query. We want to take into account all Analyzers, Bridges etc. that are definied on entity Book.

Kind regards,
Krzysztof Kowalczyk

Hi,

I am not sure I understand your question correctly, but I will try to to provide some ideas depending on how I understood it.
You have a database with 500 000 books and out of these you selected 10. I am assuming this selection/search is not done via a Lucene query, otherwise you would already know that they match, right? Now you want to know if any of these 10 books matches a given Lucene query.
What you can do is build your Lucene query and then combine this query using a BooleanQuery with a set of TermQueries matching the entity ids. Each indexed document contains the entity id (use FullTextQuery.ID as field name). Run the BooleanQuery and see if you get a result.


Hibernate Search will do this automatically for you.

--Hardy

Hi,

Thanks for the answer. The problem is that we use tree structure. We need to group and paginate on some top level element (e.g. Shelve) but our query is more concerned about children (e.g. books). For example we have shelves and books on them. We have already found some shelves with a Lucene Query (e.g. a shelve for books starting with letter "A"), but we have problem that shelve contains also some books "B", so we need reuse the query to find only books A from the already found shelve "A". Of course the problem is more complex and it would take long to explain the real domain.

Kind regards,
Krzysztof Kowalczyk