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Date: Fri, 24 Jul 2015 16:46:04 -0400
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Subject: Re: drilldown query with null base query
From: Sheng <shengcer@gmail.com>
To: "java-user@lucene.apache.org" <java-user@lucene.apache.org>
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found out even more - if I mix up the negative path (boolean filter with
MUST_NOT) and normal path in drilldownpath, it does not work with base
query = MatchAllDocsQuery(). _However_, if I instead use a term query as
the base query, while everything else stays the same, the drilldown does
work.

On Fri, Jul 24, 2015 at 2:06 PM, Sheng <shengcer@gmail.com> wrote:

> Just found out more, drill down query will MatchAllDocsQuery as base query
> will work if only one path is added, and starts to return empty results if
> more than 1 path are added. This is very strange...
>
>
>
> On Fri, Jul 24, 2015 at 12:12 PM, Sheng <shengcer@gmail.com> wrote:
>
>> This is what I am going to achieve - running a drill down query with
>> baseQuery = null / MatchAllDocsQuery(), and expecting the index returning
>> all the documents that matches the drill down path(s).  So it returns
>> nothing back to me, however as long as I make the basequery to search a
>> specific term instead of null / MatchAllDocsQuery(), it returns correct
>> results back to me.
>>
>> I read the src code of DrillDownQuery, it says "using null /
>> MatchAllDocsQuery() as base query is equal to a pure browsing query". I was
>> assuming it should work with a particular set of drill down paths too, but
>> it does not seem to be so.
>>
>> BTW - I am using Lucene 4.10.2
>>
>
>

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