hello,
I'm trying to construct a boolean query, but can't get it to return the
results that I intend. Does anyone see what I'm doing wrong ?
The query is like
The idea is that it should return documents where
someField_1 = 0 OR someField_2 = 0 AND booleanField_1 = false BUT NOT (
someField_1
Step 1, fully parenthesize your boolean to show your desired order of
execution. The Lucene BooleanQuery does not do a pure Boolean evaluation.
You have the same sub-expression in your NOT clause - that's probably what
guarantees zero results. And you have an unmatched right parenthesis at the
thanks Jack for your answer, however I'm not quite sure what to do with it:
the query is like
+( someField_1:0 someField_2:0 )
+booleanField_1:false
-(
+( someField_1:0 someField_2:0 )
+booleanField_2:true
)
(I put this in 'raw' before, think it might not have shown up in
Ah... the way you've phrased it, the nested NOT query will exclude docs even
if "booleanField_1:false", so that will guarantee zero results.
It seems like what you want is:
+someField_1:0
+someField_2:0
+booleanField_1:false
-booleanField_2:true
In your original case, the parentheses were caus
OK, it's not the idea that the nested NOT query has got anything to do with
booleanField_1, so I'll try to phrase very clearly what I want :
the query should return docs where
( someField_1 = 0 OR someField_2 = 0) AND
( booleanField_1 = false ) AND
( NOT ( ( someField_1 = 0 OR someField_2 = 0 )
And "(NOT booleanField_2 = true )" is really just "booleanField_2 = false",
right? Unless you are looking for fields that are not populated with any
value in addition to an explicit false value.
-- Jack Krupansky
-Original Message-
From: heikki
Sent: Thursday, August 23, 2012 9:13 AM
Using a FieldSelector is likely to speed up the doc.get() calls, but
it is still liable to be slow. Can you use the lucene FieldCache?
Some other memory cache? Payloads?
--
Ian.
On Wed, Aug 22, 2012 at 4:39 PM, Sebastian R. wrote:
> Dear all,
>
> I am currently trying to implement a personal
Yeah, I had already tried the FieldSelector. I don't know how I could use the
FieldCache for the scores because of the high number of different score
values. I'm now thinking of holding all the ranking values in memory and
retrieve them during search time using a FieldCache of the post IDs.
Downsid
