[hibernate-issues] [Hibernate-JIRA] Commented: (HSEARCH-623) Support for faceting search results

[Emmanuel Bernard (JIRA)]

    [ http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-623?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=39048#action_39048 ] 

Emmanuel Bernard commented on HSEARCH-623:
------------------------------------------

Yes this feature has been asked a number of times. If you have some spare time, a prototype would make a lot of sense.
I like the idea of building it atop the core query DSL.

> Support for faceting search results
> -----------------------------------
>
>                 Key: HSEARCH-623
>                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-623
>             Project: Hibernate Search
>          Issue Type: New Feature
>          Components: engine
>            Reporter: G Fernandes
>
> I've been asked more than once about the possibility to support facet retrieval from the search results. The idea is to categorize the results of a query into buckets containing a label plus a number of occurrences. Consider an example: I have a Book entity containing a language field. When I search for Books, I'd like to obtain not only a List<Book>, but also a list of languages and how many books from the search results fit into each of these languages, so that I can render the results as:
> Found 17 Books:
> English (10)
> Italian (5)
> Spanish (2)
> It'd be also possible to facet on more than a field at the same time, similar to what's being done with projections. 
> Facet calculation would be done at query time reading directly from the index, probably by using a plugable strategy, examples would be LuceneFieldCacheStrategy and TermEnumStrategy. 
> Asking for facets would be done at API level, probably with a decorator on top of QueryBuilder something like 
> facetQueryBuilder.facetOn("field1").facetOn("field2").results().facets(); 
> WDYT?

-- 
This message is automatically generated by JIRA.
-
If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.jspa
-
For more information on JIRA, see: http://www.atlassian.com/software/jira