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Posted to java-user@lucene.apache.org by Huntsman84 <tp...@gmail.com> on 2009/05/18 18:07:27 UTC
Too many results with RegexQuery
Hi,
I am using RegexQuery aiming to get a list of records from a regular
expression, but in some cases the search returns too many results, and for
that my program throws an Exception.
How could I customize the query or the searcher to, for example, get just a
set of results?
Thank you so much!!
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Re: Too many results with RegexQuery
Posted by Ian Lea <ia...@gmail.com>.
To get the first n clauses you could maybe create your own query
subclassing RegexQuery with an implementation of getEnum(reader) that
returned a FilteredTermEnum that was a subclass of RegexTermEnum that
stopped after the first n. That's made up from following the javadoc
and I've no idea if it is practical or not. Perhaps someone else has
a simpler suggestion.
--
Ian.
On Tue, May 19, 2009 at 9:26 AM, Huntsman84 <tp...@gmail.com> wrote:
>
> I tryed that solution at my first attempt, but the result is that my
> application turns too slow.
>
> What I need is to create a query with a small amount of clauses, 100-200,
> using some kind of filter. For example, if my RegexQuery generates 5000
> clauses, I just want from the 100 first clauses (in alphabetical order).
>
> How could I build the filter?
>
>
> Ian Lea wrote:
>>
>> If you mean you are getting BooleanQuery.TooManyClauses then the
>> simple solution is BooleanQuery.setMaxClauseCount(int maxClauseCount).
>> See the javadocs for default values and some suggestions on
>> workarounds. And the FAQ. And Google.
>>
>> If this isn't what you are getting, please tell us *exactly* what you
>> are getting.
>>
>>
>> --
>> Ian.
>>
>>
>>
>> On Tue, May 19, 2009 at 7:47 AM, Huntsman84 <tp...@gmail.com> wrote:
>>>
>>> I mean "too many terms", excuse me.
>>>
>>>
>>> JoelGrrrr wrote:
>>>>
>>>> "but in some cases the search returns too many results"
>>>> do you *really* mean you get "too many results"? or do you actually mean
>>>> you get a "too many terms" exception due to the query expansion?
>>>>
>>>>
>>>>
>>>> -----Original Message-----
>>>> From: Huntsman84 <tp...@gmail.com>
>>>> Reply-To: java-user@lucene.apache.org
>>>> To: java-user@lucene.apache.org
>>>> Subject: Too many results with RegexQuery
>>>> Date: Mon, 18 May 2009 09:07:27 -0700 (PDT)
>>>>
>>>> Hi,
>>>>
>>>> I am using RegexQuery aiming to get a list of records from a regular
>>>> expression, but in some cases the search returns too many results, and
>>>> for
>>>> that my program throws an Exception.
>>>>
>>>> How could I customize the query or the searcher to, for example, get
>>>> just
>>>> a
>>>> set of results?
>>>>
>>>> Thank you so much!!
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
>> For additional commands, e-mail: java-user-help@lucene.apache.org
>>
>>
>>
>
> --
> View this message in context: http://www.nabble.com/Too-many-results-with-RegexQuery-tp23600064p23611881.html
> Sent from the Lucene - Java Users mailing list archive at Nabble.com.
>
>
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>
>
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Re: Too many results with RegexQuery
Posted by Huntsman84 <tp...@gmail.com>.
I tryed that solution at my first attempt, but the result is that my
application turns too slow.
What I need is to create a query with a small amount of clauses, 100-200,
using some kind of filter. For example, if my RegexQuery generates 5000
clauses, I just want from the 100 first clauses (in alphabetical order).
How could I build the filter?
Ian Lea wrote:
>
> If you mean you are getting BooleanQuery.TooManyClauses then the
> simple solution is BooleanQuery.setMaxClauseCount(int maxClauseCount).
> See the javadocs for default values and some suggestions on
> workarounds. And the FAQ. And Google.
>
> If this isn't what you are getting, please tell us *exactly* what you
> are getting.
>
>
> --
> Ian.
>
>
>
> On Tue, May 19, 2009 at 7:47 AM, Huntsman84 <tp...@gmail.com> wrote:
>>
>> I mean "too many terms", excuse me.
>>
>>
>> JoelGrrrr wrote:
>>>
>>> "but in some cases the search returns too many results"
>>> do you *really* mean you get "too many results"? or do you actually mean
>>> you get a "too many terms" exception due to the query expansion?
>>>
>>>
>>>
>>> -----Original Message-----
>>> From: Huntsman84 <tp...@gmail.com>
>>> Reply-To: java-user@lucene.apache.org
>>> To: java-user@lucene.apache.org
>>> Subject: Too many results with RegexQuery
>>> Date: Mon, 18 May 2009 09:07:27 -0700 (PDT)
>>>
>>> Hi,
>>>
>>> I am using RegexQuery aiming to get a list of records from a regular
>>> expression, but in some cases the search returns too many results, and
>>> for
>>> that my program throws an Exception.
>>>
>>> How could I customize the query or the searcher to, for example, get
>>> just
>>> a
>>> set of results?
>>>
>>> Thank you so much!!
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>
>
--
View this message in context: http://www.nabble.com/Too-many-results-with-RegexQuery-tp23600064p23611881.html
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---------------------------------------------------------------------
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Re: Too many results with RegexQuery
Posted by Ian Lea <ia...@gmail.com>.
If you mean you are getting BooleanQuery.TooManyClauses then the
simple solution is BooleanQuery.setMaxClauseCount(int maxClauseCount).
See the javadocs for default values and some suggestions on
workarounds. And the FAQ. And Google.
If this isn't what you are getting, please tell us *exactly* what you
are getting.
--
Ian.
On Tue, May 19, 2009 at 7:47 AM, Huntsman84 <tp...@gmail.com> wrote:
>
> I mean "too many terms", excuse me.
>
>
> JoelGrrrr wrote:
>>
>> "but in some cases the search returns too many results"
>> do you *really* mean you get "too many results"? or do you actually mean
>> you get a "too many terms" exception due to the query expansion?
>>
>>
>>
>> -----Original Message-----
>> From: Huntsman84 <tp...@gmail.com>
>> Reply-To: java-user@lucene.apache.org
>> To: java-user@lucene.apache.org
>> Subject: Too many results with RegexQuery
>> Date: Mon, 18 May 2009 09:07:27 -0700 (PDT)
>>
>> Hi,
>>
>> I am using RegexQuery aiming to get a list of records from a regular
>> expression, but in some cases the search returns too many results, and for
>> that my program throws an Exception.
>>
>> How could I customize the query or the searcher to, for example, get just
>> a
>> set of results?
>>
>> Thank you so much!!
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Re: Too many results with RegexQuery
Posted by Huntsman84 <tp...@gmail.com>.
I mean "too many terms", excuse me.
JoelGrrrr wrote:
>
> "but in some cases the search returns too many results"
> do you *really* mean you get "too many results"? or do you actually mean
> you get a "too many terms" exception due to the query expansion?
>
>
>
> -----Original Message-----
> From: Huntsman84 <tp...@gmail.com>
> Reply-To: java-user@lucene.apache.org
> To: java-user@lucene.apache.org
> Subject: Too many results with RegexQuery
> Date: Mon, 18 May 2009 09:07:27 -0700 (PDT)
>
> Hi,
>
> I am using RegexQuery aiming to get a list of records from a regular
> expression, but in some cases the search returns too many results, and for
> that my program throws an Exception.
>
> How could I customize the query or the searcher to, for example, get just
> a
> set of results?
>
> Thank you so much!!
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> For additional commands, e-mail: java-user-help@lucene.apache.org
>
>
>
--
View this message in context: http://www.nabble.com/Too-many-results-with-RegexQuery-tp23600064p23610644.html
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Re: Too many results with RegexQuery
Posted by Joel Halbert <jo...@su3analytics.com>.
"but in some cases the search returns too many results"
do you *really* mean you get "too many results"? or do you actually mean
you get a "too many terms" exception due to the query expansion?
-----Original Message-----
From: Huntsman84 <tp...@gmail.com>
Reply-To: java-user@lucene.apache.org
To: java-user@lucene.apache.org
Subject: Too many results with RegexQuery
Date: Mon, 18 May 2009 09:07:27 -0700 (PDT)
Hi,
I am using RegexQuery aiming to get a list of records from a regular
expression, but in some cases the search returns too many results, and for
that my program throws an Exception.
How could I customize the query or the searcher to, for example, get just a
set of results?
Thank you so much!!
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