[hibernate-dev] Lucene Collector for Hibernate Search

Sanne Grinovero sanne.grinovero at gmail.com
Sat Nov 27 13:45:50 EST 2010

Hi Amin,
If there are interesting use cases for this I would like to know more about it.
Technically it doesn't seem hard to implement, but would you not use
the native IndexSearcher anyway to make use of this? I mean, would
there be a practical use case to set the collector and then let the
search results be handled by Hibernate Search, or are you going to
handle the collected results with custom code anyway?
Also we have plans to set a custom collector to perform some nice
performance optimization tricks: I was thinking to leverage the
advantage of FieldCaches by default, so you would loose this advantage
by setting a custom one if yours doesn't use the same caches.


2010/11/27 Amin Mohammed-Coleman <aminmc at gmail.com>:
> Hi All
> Apologies up front if this isn't the right place for this.   Are there any plans to allow Collectors to be used within Hibernate Search?  I had an interesting requirement which meant I couldn't use pagination and as result I had to use a custom collector using IndexSearcher.  My use case essentially meant I had to do a search and collect some specific data for each matching document and return the entire result set to the next process in the workflow.
> As users have direct access to the underlying directory I guess using native lucene for the use of collectors is ok but I guess it would be nice to essentially set an optional collector in the FullTextQuery.
> Again apologies up front if this is implemented already or I should post my questions on the forums.
> Thanks
> Amin
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