TwoPhaseIterator

[Eduardo Manrique <ed...@s1mbi0se.com.br>]

Hi,

I’m trying to make a cross document MUST with query time join. What I need is return a group if one of its documents matches a condition, and one of another of its doc matches another condition. Searching on internet I found the two phase intersection https://issues.apache.org/jira/browse/LUCENE-6198 <https://issues.apache.org/jira/browse/LUCENE-6198> that seems to be what I need. But I couldn’t find any examples or how to use it. Will it help me on my case? If so, do you guys have any example?

Thanks

Eduardo Manrique

Re: TwoPhaseIterator

[Adrien Grand <jp...@gmail.com>]

Hi,

Sorry but I did not understand what you are trying to achieve.
However, TwoPhaseIterator does not really help implement search
use-cases. It is rather an optimization which allows Lucene to
dissociate query executon into a cheap approximation and a costly
verificati. A good example is phrase queries: the cheap approximation
is a conjunction of terms (find documents that contain all terms) and
the costly verification is about verifying that terms appear at
consecutive positions.

On Fri, May 22, 2015 at 2:58 PM, Eduardo Manrique
<ed...@s1mbi0se.com.br> wrote:
> Hi,
>
> I’m trying to make a cross document MUST with query time join. What I need is return a group if one of its documents matches a condition, and one of another of its doc matches another condition. Searching on internet I found the two phase intersection https://issues.apache.org/jira/browse/LUCENE-6198 <https://issues.apache.org/jira/browse/LUCENE-6198> that seems to be what I need. But I couldn’t find any examples or how to use it. Will it help me on my case? If so, do you guys have any example?
>
> Thanks
>
> Eduardo Manrique



-- 
Adrien

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