Hi Scott/Eugene,
I don't think that the limitation of 32 required/prohibited clauses is
related to the BooleanQuery maxClauseCount.
The default maxClauseCount of Boolean query is set to 1024. This
restriction is to prevent a wildcard term expansion from creating a query
with thousands of clauses. The limitation of 32 required/prohibited
clauses is a different limitation and I believe has more to do with the way
queries are processed at a low level.
Eugene, can you group your terms so that you have less than 32
required/prohibited clauses? For example, instead of a query that is "-red
-blue -yellow -green", you could do "-(red blue yellow green)" and reduce
your required/prohibited clause count from 4 to 1.
DaveB
Scott Ganyo
<[EMAIL PROTECTED] To: Lucene Users List <[EMAIL
PROTECTED]>
estry.com> cc:
Subject: Re: Limit on number of
required/prohibited clauses
09/05/2003 01:55
PM
Please respond to
"Lucene Users
List"
Hi Eugene,
Yes. Doug (Cutting) added this to eliminate OutOfMemory errors that
apparently some people were having. Unfortunately, it causes
backward-compatibility issues if you were used to using version 1.2.
So, you'll need to add a call like this:
BooleanQuery.setMaxClauseCount(Integer.MAX_VALUE);
(Of course, you can set the parameter to whatever you want, but
unrestricted works best for me.)
Scott
Eugene S. wrote:
>Hi,
>
>I've come across the limit on the number of
>required/prohibited clauses in a boolean query (the
>limit is 32). What is the reasoning for having such
>limit? Can it be circumvented?
>
>Thanks!
>
>Eugene.
>
>__________________________________
>Do you Yahoo!?
>Yahoo! SiteBuilder - Free, easy-to-use web site design software
>http://sitebuilder.yahoo.com
>
>---------------------------------------------------------------------
>To unsubscribe, e-mail: [EMAIL PROTECTED]
>For additional commands, e-mail: [EMAIL PROTECTED]
>
>
--
All progress is initiated by challenging current conceptions, and executed
by supplanting existing institutions. - George Bernard Shaw
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
