Well, PerFieldAnalyzerWrapper is just a bunch of Analyzers,independent of
queries. See the API, but in general
PerFieldAnalyzerWrapper perf = new PerFieldAnalyzerWrapper("default", new
StandardAnalyzer());
perf.add("untokenized", new WhitespaceAnalyzer());
perf.add("tokenized", new SnowballAnalyzer());
etc...
Some time later...
QueryParser qp = new QueryParser("defaultfield", perf);
Query q = qp.parse("tokenized:value1 +tokenized:vaue2) (+untokenized:value3
+
untokenized:value4)");
But you have to get from your user input to the field:value form
and that's what your application has to do. Presumably
your application has some way of getting the query from
the user in such a fashion that you can map particular terms
to particular fields. If you don't, you have a problem that
Lucene can't help you with <G>..
Best
Erick
On Wed, Mar 11, 2009 at 1:22 AM, rokham <somebodyik...@gmail.com> wrote:
>
> Thanks a bunch for you very prompt reply. I looked into the
> PerFieldAnalyzerWrapper class and I understand how you can add a specific
> analyzer for each field. My question is how does this link to the query
> that's sent to me.
>
> If I'm given a query as follows:
> (+tokenized:value1 +tokenized:vaue2) (+untokenized:value3 +
> untokenized:value4)
>
> can you please give me a seudo code/code example where I would search
> Lucene's index based on the given fields and my desired analyzer for each
> field? I'm not clear on how I can go about building a
> PerFieldAnalyzerWrapper object without having to parse the query and take
> out the fields and assign their specific analyzer to them.
>
> Rokham
>
>
>
> Erick Erickson wrote:
> >
> > PerFieldAnalyzerWrapper is your friend, assuming that you have separate
> > fields, some tokenized and some not. If you *don't* have separate
> > fields, then we need more details of what you hope to accomplish...
> >
> > something like
> >
> > (+tokenized:value1 +tokenized:vaue2) (+untokenized:value3 +
> > untokenized:value4)
> >
> > should do the trick, where you've constructed a PerFieldAnalyzerWrapper
> > with a tokenizing analyzer for field "tokenized" and a non-tokenizing
> > analyzer
> > for field "untokenized".
> >
> > Best
> > Erick
> >
> > On Mon, Mar 9, 2009 at 11:01 AM, rokham <somebodyik...@gmail.com> wrote:
> >
> >>
> >> Hi,
> >>
> >> I've been trying to find a way which allows executing a query that
> >> contains
> >> both Tokenized and Untokenized fields on Lucene's index, without having
> >> to
> >> parse the query. I've been able to execute a query which only uses
> >> Tokenized
> >> fields as follows:
> >>
> >> QueryParser queryParser = new QueryParser( DEFAULT_FIELD, analyzer);
> >> Query query = queryParser.parse(queryString);
> >> Hits hits = indexSearcher.search(query);
> >>
> >> This works fine for Tokenized fields but I'm not sure how to execute a
> >> query
> >> ("queryString") which contains both tokenized and untokenized fields.
> >>
> >> Any suggestion is very much appreciated.
> >>
> >> Rokham
> >> --
> >> View this message in context:
> >>
> http://www.nabble.com/How-to-search-both-Tokenized-and-Untokenized-fields-tp22413438p22413438.html
> >> Sent from the Lucene - Java Users mailing list archive at Nabble.com.
> >>
> >>
> >> ---------------------------------------------------------------------
> >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org
> >> For additional commands, e-mail: java-user-h...@lucene.apache.org
> >>
> >>
> >
> >
>
> --
> View this message in context:
> http://www.nabble.com/How-to-search-both-Tokenized-and-Untokenized-fields-tp22413438p22449012.html
> Sent from the Lucene - Java Users mailing list archive at Nabble.com.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org
> For additional commands, e-mail: java-user-h...@lucene.apache.org
>
>
