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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: To exit the while loop if match is found
Date Fri, 27 Nov 2009 11:19:12 GMT
This question is out of the scope of Lucene. Try using some AJAX frameworks
like YUI for the communication between your textbox and the server.

-----
Uwe Schindler
H.-H.-Meier-Allee 63, D-28213 Bremen
http://www.thetaphi.de
eMail: uwe@thetaphi.de

> -----Original Message-----
> From: DHIVYA M [mailto:dhivyakrishnan87@yahoo.com]
> Sent: Friday, November 27, 2009 12:17 PM
> To: java-user@lucene.apache.org
> Subject: RE: To exit the while loop if match is found
> 
> Sir anyways i want this to happen in keypress event of the text box.
> Can u suggest me a way for this?
> 
> Thanks in advance,
> Dhivya.M
> 
> --- On Fri, 27/11/09, Uwe Schindler <uwe@thetaphi.de> wrote:
> 
> 
> From: Uwe Schindler <uwe@thetaphi.de>
> Subject: RE: To exit the while loop if match is found
> To: java-user@lucene.apache.org
> Date: Friday, 27 November, 2009, 11:00 AM
> 
> 
> Another more simplier approach is to use
> http://lucene.apache.org/java/3_0_0/api/core/org/apache/lucene/search/Pref
> ix
> TermEnum.html
> 
> It is a wrapper term enumeration that lists all Terms with the supplied
> prefix. You do not need to filter anything manual, just use a while-loop:
> 
> IndexReader reader = ...
> TermEnum tenum = new PrefixTermEnum(reader, new Term(field, prefix));
> do {
>     if (tenum.term() == null) break;
>     final String termText = tenum.term().text();
>     ... // do something with the listed term
> } while (tenum.next());
> 
> 
> About your question: Depending on the used analyzers you may find the
> terms
> in modified form (lowercased, stemmed,...).
> 
> Uwe
> 
> -----
> Uwe Schindler
> H.-H.-Meier-Allee 63, D-28213 Bremen
> http://www.thetaphi.de
> eMail: uwe@thetaphi.de
> 
> > -----Original Message-----
> > From: DHIVYA M [mailto:dhivyakrishnan87@yahoo.com]
> > Sent: Thursday, November 26, 2009 10:57 AM
> > To: java-user@lucene.apache.org
> > Subject: To exit the while loop if match is found
> >
> > Thanks for your suggested code sir.
> >
> > But it displays only one word.
> >
> > Ex:
> > if the input is "z"
> >
> > actual output must be
> >
> > zing
> > Zohar
> >
> > but am getting zing alone
> >
> > --- On Thu, 26/11/09, Uwe Schindler <uwe@thetaphi.de> wrote:
> >
> >
> > From: Uwe Schindler <uwe@thetaphi.de>
> > Subject: RE: Need help regarding implementation of autosuggest using
> > jquery
> > To: java-user@lucene.apache.org
> > Date: Thursday, 26 November, 2009, 9:49 AM
> >
> >
> > You can fix this if you just create the initial term not with "",
> instead
> > with your prefix:
> > TermEnum tenum = reader.terms(new Term(field,prefix));
> >
> > And inside the while loop just break out,
> >
> > if (!termText.startsWith(prefix)) break;
> >
> > -----
> > Uwe Schindler
> > H.-H.-Meier-Allee 63, D-28213 Bremen
> > http://www.thetaphi.de
> > eMail: uwe@thetaphi.de
> >
> >
> > > -----Original Message-----
> > > From: DHIVYA M [mailto:dhivyakrishnan87@yahoo.com]
> > > Sent: Thursday, November 26, 2009 10:39 AM
> > > To: java-user@lucene.apache.org
> > > Subject: RE: Need help regarding implementation of autosuggest using
> > > jquery
> > >
> > > Sir,
> > >
> > > Your suggestion was fantastic.
> > >
> > > I tried the below mentioned code but it is showing me the entire
> result
> > of
> > > indexed words starting from the letter that i give as input.
> > > Ex:
> > > if i give "fo"
> > > am getting all the indexes from the word starting with fo upto words
> > > starting with z.
> > > i.e. it starts displaying from the word matching the search word and
> > ends
> > > up with the last word available in the index file.
> > >
> > > Kindly suggest me a solution for this problem
> > >
> > > Thanks in advance,
> > > Dhivya
> > >
> > > --- On Wed, 25/11/09, Uwe Schindler <uwe@thetaphi.de> wrote:
> > >
> > >
> > > From: Uwe Schindler <uwe@thetaphi.de>
> > > Subject: RE: Need help regarding implementation of autosuggest using
> > > jquery
> > > To: java-user@lucene.apache.org
> > > Date: Wednesday, 25 November, 2009, 9:54 AM
> > >
> > >
> > > Hi Dhivya,
> > >
> > > you can iterate all terms in the index using a TermEnum, that can be
> > > retrieved using IndexReader.terms(Term startTerm).
> > >
> > > If you are interested in all terms from a specific field, position the
> > > TermEnum on the first possible term in this field ("") and iterate
> until
> > > the
> > > field name changes. As terms in the TermEnum are first ordered by
> field
> > > name
> > > then by term text (in UTF-16 order), the loop would look like this:
> > >
> > > IndexReader reader = ...
> > > String field = ....
> > > Field = field.intern(); // important for the while loop
> > > TermEnum tenum = reader.terms(new Term(field,""));
> > > try {
> > >     do {
> > >         final Term term = tenum.term();
> > >         if (term==null || term.field()!=field) break;
> > >         final String termText = term.text();
> > >         // do something with the termText
> > >     } while (tenum.next());
> > > } finally {
> > >     tenum.close();
> > > }
> > >
> > >
> > > -----
> > > Uwe Schindler
> > > H.-H.-Meier-Allee 63, D-28213 Bremen
> > > http://www.thetaphi.de
> > > eMail: uwe@thetaphi.de
> > >
> > >
> > > > -----Original Message-----
> > > > From: DHIVYA M [mailto:dhivyakrishnan87@yahoo.com]
> > > > Sent: Wednesday, November 25, 2009 8:06 AM
> > > > To: java user
> > > > Subject: Need help regarding implementation of autosuggest using
> > jquery
> > > >
> > > > Hi all,
> > > >
> > > > Am using lucene 2.3.2 as a search engine in my e-paper site. So that
> i
> > > > want the user to search the news. I achieved that objective but now
> am
> > > > trying to implement autosuggest so that user can pick a choice from
> > the
> > > > drop down and no need of typing in the entire sentence or so.
> > > >
> > > > I have download Jquery for this purpose and am trying to implement
> it.
> > > > The collections of data to refer for the suggestion is given in an
> > > > arraylist or jus with in a string.
> > > >
> > > > But for my application, i need to populate the suggestions with the
> > > > indexed words available in the index file created during indexing
> > > > operation.
> > > >
> > > > Can anyone give an idea to read the contents from the index file and
> > > make
> > > > it available as suggestions? or anyother idea to achieve this
> > objective?
> > > >
> > > > Thanks in advance,
> > > > Dhivya
> > > >
> > > >
> > > >       The INTERNET now has a personality. YOURS! See your Yahoo!
> > > Homepage.
> > > > http://in.yahoo.com/
> > >
> > >
> > > ---------------------------------------------------------------------
> > > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > > For additional commands, e-mail: java-user-help@lucene.apache.org
> > >
> > >
> > >
> > >
> > >       The INTERNET now has a personality. YOURS! See your Yahoo!
> > Homepage.
> > > http://in.yahoo.com/
> >
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
> > For additional commands, e-mail: java-user-help@lucene.apache.org
> >
> >
> >
> >
> >       The INTERNET now has a personality. YOURS! See your Yahoo!
> Homepage.
> > http://in.yahoo.com/
> 
> 
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscribe@lucene.apache.org
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> 
> 
> 
> 
>       The INTERNET now has a personality. YOURS! See your Yahoo! Homepage.
> http://in.yahoo.com/


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