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From Ronnie Kolehmainen <ronnie.kolehmai...@ub.uu.se>
Subject Re: SELECT * FROM Index-file
Date Mon, 05 Mar 2007 13:09:27 GMT
Or MatchAllDocsQuery.

/Ronnie

Erick Erickson wrote:
> Why not just call IndexReader.document(idx) where idx ranges
> from 0 to IndexReader.maxDoc()? I believe if your index has some
> deleted documents you'll have to handle null returns though....
> 
> Sorry to lose you to the dark side <G>...
> 
> Best
> Erick
> 
> 
> On 3/5/07, Morten Simonsen <morten.simonsen@owera.com> wrote:
> 
>>
>> 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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>>
> 

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