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Posted to java-user@lucene.apache.org by Hetan Shah <He...@Sun.COM> on 2004/07/27 01:11:28 UTC
Phrase Query
Hello,
Can someone on the mailing list send me a copy of sample code of how to
implement the phrase query for my search. Regular Query is working fine,
but the Phrase Query does not seem to work.
TIA,
-H
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Re: Phrase Query
Posted by Daniel Naber <da...@t-online.de>.
On Thursday 29 July 2004 22:32, Hetan Shah wrote:
> All the Words:
> The Exact Phrase:
> Any of the Words:
Just use the query parser. For the "All" fields, set
setOperator(DEFAULT_OPERATOR_AND) before you call parse(). For the phrase,
just add quotes around the query before you feed it into QuerParser.
Regards
Daniel
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Re: Phrase Query
Posted by Hetan Shah <He...@Sun.COM>.
Hi Erik,
I am trying to create the query based on the field the user enters the
keywords in.
I have these three field.
All the Words:
The Exact Phrase:
Any of the Words:
For All the words and Any of the words I am able to use Query. For The
Exact Phrase I want to use the PhraseQuery. That is what I was showing
in the code snippet. My mistake in not commenting out the line where I
was per-pending and appending the quotation marks, which is taken care
by the PhraseQuery. So how would one go about creating the different
queries and then do the actual search.
Any help and/or code snippet is highly appreciated.
Thanks.
-H
Erik Hatcher wrote:
> On Jul 27, 2004, at 11:42 AM, Hetan Shah wrote:
>
>> Works for me.
>> Here is what I am striving to achieve.
>>
>> phraseString = request.getParameter("phrase");
>> if (phraseString.length() > 0){
>> phraseQueryString = "\""+phraseString+("\"");
>> phraseQuery = true;
>> queryString = phraseQueryString;
>> }
>>
>> if(phraseQuery){
>> PhraseQuery pQuery = new PhraseQuery();
>> pQuery.add(new Term("contents", phraseString));
>> pQuery.setSlop(0);
>> QueryParser qP = new QueryParser();
>> query = qP.parse(phraseString);
>> }
>
>
> I don't understand what you're attempting in the above. You don't make
> a new Term and add it to a PhraseQuery instance with the term having
> quotes around it - it is QueryParser that deals with quoted strings and
> interpreting it into a PhraseQuery.
>
> Are you using pQuery? Or query? You've got two Query instances there -
> query is the one you probably want.
>
> Erik
>
>
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Re: Phrase Query
Posted by Hetan Shah <He...@Sun.COM>.
What I am trying to do is to create the query based on the field in
which user enters the keywords.
I have the following fields.
All the Words:
The Exact Phrase:
Any of the Words:
For All the words and Any of the words I am able to use Query. For The
Exact Phrase I want to use the PhraseQuery. That is what I was showing
in the code snippet. My mistake in not commenting out the line where I
was per-pending and appending the quotation marks, which is taken care
by the PhraseQuery. So how would one go about creating the different
queries and then do the actual search.
Thanks.
-H
Erik Hatcher wrote:
> On Jul 27, 2004, at 11:42 AM, Hetan Shah wrote:
>
>> Works for me.
>> Here is what I am striving to achieve.
>>
>> phraseString = request.getParameter("phrase");
>> if (phraseString.length() > 0){
>> phraseQueryString = "\""+phraseString+("\"");
>> phraseQuery = true;
>> queryString = phraseQueryString;
>> }
>>
>> if(phraseQuery){
>> PhraseQuery pQuery = new PhraseQuery();
>> pQuery.add(new Term("contents", phraseString));
>> pQuery.setSlop(0);
>> QueryParser qP = new QueryParser();
>> query = qP.parse(phraseString);
>> }
>
>
> I don't understand what you're attempting in the above. You don't make
> a new Term and add it to a PhraseQuery instance with the term having
> quotes around it - it is QueryParser that deals with quoted strings and
> interpreting it into a PhraseQuery.
>
> Are you using pQuery? Or query? You've got two Query instances there -
> query is the one you probably want.
>
> Erik
>
>
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> To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
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Re: Phrase Query
Posted by Erik Hatcher <er...@ehatchersolutions.com>.
On Jul 27, 2004, at 11:42 AM, Hetan Shah wrote:
> Works for me.
> Here is what I am striving to achieve.
>
> phraseString = request.getParameter("phrase");
> if (phraseString.length() > 0){
> phraseQueryString = "\""+phraseString+("\"");
> phraseQuery = true;
> queryString = phraseQueryString;
> }
>
> if(phraseQuery){
> PhraseQuery pQuery = new PhraseQuery();
> pQuery.add(new Term("contents", phraseString));
> pQuery.setSlop(0);
> QueryParser qP = new QueryParser();
> query = qP.parse(phraseString);
> }
I don't understand what you're attempting in the above. You don't make
a new Term and add it to a PhraseQuery instance with the term having
quotes around it - it is QueryParser that deals with quoted strings and
interpreting it into a PhraseQuery.
Are you using pQuery? Or query? You've got two Query instances there
- query is the one you probably want.
Erik
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Re: Phrase Query
Posted by Hetan Shah <He...@Sun.COM>.
Works for me.
Here is what I am striving to achieve.
phraseString = request.getParameter("phrase");
if (phraseString.length() > 0){
phraseQueryString = "\""+phraseString+("\"");
phraseQuery = true;
queryString = phraseQueryString;
}
if(phraseQuery){
PhraseQuery pQuery = new PhraseQuery();
pQuery.add(new Term("contents", phraseString));
pQuery.setSlop(0);
QueryParser qP = new QueryParser();
query = qP.parse(phraseString);
}
This is piece of the code, what I intend to do is if there is any
keyword entered in the Exact Phrase field of the form I want to use the
phrase query other wise use regular Query.
Please correct the code if you'll think it is not correct. I am still
learning about search and Lucene in general.
thanks.
-H
Erik Hatcher wrote:
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Re: Phrase Query
Posted by Erik Hatcher <er...@ehatchersolutions.com>.
Let's turn it around.... could you send us your code that is not
working?
Lucene's test cases show PhraseQuery in action, and working.
Erik
On Jul 26, 2004, at 4:11 PM, Hetan Shah wrote:
> Hello,
>
> Can someone on the mailing list send me a copy of sample code of how
> to implement the phrase query for my search. Regular Query is working
> fine, but the Phrase Query does not seem to work.
>
> TIA,
> -H
>
>
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> To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
> For additional commands, e-mail: lucene-user-help@jakarta.apache.org
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