Hello -
a quick follow-up to my previous post.
In the SpanNear (or for that matter PhraseQuery), one can set a slop
value where 0 (zero) means one following after the other.
How can one differentiate between Terms at the **same** position vs. one
after the other?
ie:
(Token)/Position
(A)/0 (B)/1 (C)/2 ....
vs
( A B )/0 (C)/1 (D)/2 ...
How can a SpanNear (or anything) query for A,B tell these two cases apart?
---Marc
Doug Cutting wrote:
Marc Hadfield wrote:
I actually mention your option in my email:
In principle I could store the full text in two fields with the
second field containing the types without incrementing the token
index. Then, do a SpanQuery for "Johnson" and "name" with a
distance of 0. The resulting match would have a token position
which would refer back to the matching position in the first field.
I don't know if this is a really good idea.
ie Field_B = full text interlaced with "types" following each full
text token with positionIncrement=0
Sorry, you confused me when you spoke of this as "two fields" when
only one field is required.
However, as far as I understand, the standard TermQuery won't let me
check if "Johnson" and "__name__" occur at the **same** position.
Perhaps, as I ask above, a SpanQuery will allow multiple terms with a
distance of zero (0) , that is they were indexed with
positionIncrement=0 and SpanQuery can handle 0 distance terms?
TermQuery certainly won't, since it only concerns a single term. But
PhraseQuery now has an add(Term, position) method that should do the
trick. And SpanNearQuery should work.
Doug
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