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Subject: SELECT * FROM Index-file
From: Morten Simonsen <morten.simonsen@owera.com>
To: java-user@lucene.apache.org
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Organization: Owera
Date: Mon, 05 Mar 2007 11:07:31 +0100
Message-Id: <1173089251.5397.17.camel@morten-laptop>
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Hi

I'm about to convert from Lucene index-files into a MySQL (sorry about
that:) I thought I would run a "SELECT *" on the index-file, then read
through all the "rows" (hits?) and process each of them into my new
database. 

So I wrote this code: 

----
WildcardQuery query = new WildcardQuery(new Term("UnitID", "*"));
Hits hits = ism.searchUnits(query);
----

Then I receive "Something failed: org.apache.lucene.search.BooleanQuery
$TooManyClauses"

I tried to set 
BooleanQuery.setMaxClauseCount(Integer.MAX_VALUE);
but then I ran out of memory, so this is clearly not a good solution. 

I have tried using several different fields as well, also fields which
has only a limited set of values (the field are then not unique in the
index-file).

Any suggestions?

Morten Simonsen

(And yes, I'm a newbie. Didn't find anything useful during my searches
on the Internet, mailing-lists or in the book, maybe because this is a
pretty infrequent thing to do?)


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