lucene-java-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Rupinder Singh Mazara" <rsmaz...@ebi.ac.uk>
Subject RE: QueryParsing
Date Tue, 19 Oct 2004 08:39:57 GMT
hi erik and everyone else

 ok i will buy the book ;)
but this still does not solve the problem of
 why String x = "\"jakarta apache\"~100"; is being transalted as a
PhraseQuery
      FULL_TEXT:"jakarta apache"~100

 is the correct query beining formed ?  or is there something wrong with the
 Proximity Search topic in the URL
http://jakarta.apache.org/lucene/docs/queryparsersyntax.html


 Regards

 Rupinder

>-----Original Message-----
>From: Erik Hatcher [mailto:erik@ehatchersolutions.com]
>Sent: 18 October 2004 21:05
>To: Lucene Users List
>Subject: Re: QueryParsing
>
>
>QueryParser does not (currently) support SpanQuery's.  PhraseQuery is
>what you'll always get with double-quoted strings.  However, you can
>customize the behavior and get a SpanQuery instead by subclassing and
>overriding getPhraseQuery.  In fact, this is an example I wrote for
>Lucene in Action.
>
>	Erik
>
>
>On Oct 18, 2004, at 2:39 PM, Rupinder Singh Mazara wrote:
>
>> hi all
>>
>>  i have a question regarding the QueryParser and Proximity Searches
>>  I executed the following piece of code
>>
>>     String x = "\"jakarta apache\"~100";
>>     QueryParser parser = new QueryParser("FULL_TEXT",new
>> StandardAnalyzer() );
>>     parser.setOperator( QueryParser.DEFAULT_OPERATOR_AND );
>>     Query query = parser.parse(x);
>>     System.out.println(query.getClass()+" - "+query.toString());
>>
>>     IndexReader indexReader = IndexReader.open(  new File(luceneroot)
>> );
>>
>>     query =  query.rewrite(indexReader);
>>     System.out.println(query.getClass()+" - "+query.toString());
>>
>> in both System.out.println I get the following result
>> class org.apache.lucene.search.PhraseQuery - FULL_TEXT:"jakarta
>> apache"~100
>>
>> is this correct, I was expecting to see a SpanQuery being formed  at
>> the
>> second println statement
>>
>>
>> I have take this from the example in
>> http://jakarta.apache.org/lucene/docs/queryparsersyntax.html
>>
>> If I remove the quotes I see a QueryParsing error which tell me that
>> the
>> Similarity should be between 0.0 and 1.0
>> which is as expected
>>
>> please let me know if I missed something
>>
>>
>> Regards
>>
>>
>> Rupinder
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
>> For additional commands, e-mail: lucene-user-help@jakarta.apache.org
>
>
>---------------------------------------------------------------------
>To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
>For additional commands, e-mail: lucene-user-help@jakarta.apache.org
>
>


---------------------------------------------------------------------
To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
For additional commands, e-mail: lucene-user-help@jakarta.apache.org


Mime
View raw message