Though in 2.9 this is not much of a concern - the multi term queries
are smart - if it matches few enough terms it will rewrite to a
constant score booleanquery - if it matches a lot of terms it will
rewrite to a constantscore query - using a filter underneath. So
maxclause issues should no longer be an issue.
- Mark
http://www.lucidimagination.com (mobile)
On Sep 28, 2009, at 3:05 PM, Simon Willnauer <simon.willna...@googlemail.com
> wrote:
Depending on your usecase you might want to use the PrefixFilter
instead of PrefixQuery which can be way more efficient than a query.
With a filter you have the possibility to cache it very easily and you
are not exposed to issued related to the length of the prefix. If you
have a very short prefix and in turn lots of terms matching that
prefix you might run into problems with TooManyBooleanClauses
expections. The downside is that a filter will not contribute to the
score of a document.
Just wanna point you to it if it is an alternative.
simon
On Mon, Sep 28, 2009 at 7:23 PM, entdeveloper
<cameron.develo...@gmail.com> wrote:
John Seer wrote:
Hello,
Is there any benefit of using one or other for "start with query"?
Which one is faster?
Regards
It seems that you've answered your own question. If you want a
"start with
query", this is exactly what a PrefixQuery is for. WildcardQuery
gives you
more flexibility, but if you don't need it, then PrefixQuery should
get the
job done.
--
View this message in context:
http://www.nabble.com/PrefixQuery-vs-wildcardquery-tp25649045p25649399.html
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