Hi Chris,
The PhraseQuery class does no parsing; tokenization is expected to happen
before you feed anything to it. So unless you have an index-time analyzer that
outputs terms that look like "aaa ddd" -- that is, terms with embedded spaces
-- then attempting to use PhraseQuery or any other query type to look for these
terms will bring you no joy. (Of course, this only applies if you are not
using a query parser - I believe John's point about enclosing a phrase query in
quotes refers to the action Lucene's QueryParser takes when it sees input of
this sort.)
The way that it worked for you - adding terms one at a time, with no quotes and
no spaces - is the correct usage pattern.
Steve
On 07/15/2008 at 8:20 AM, Chris Bamford wrote:
> Hi John
>
> Thanks for your continued interest in my travails!
>
> ==I'm not sure I understand. You want a phrase query so they should be
> ==passed as a phrase in quotes.
>
> Ok... well I must be missing something then :-(
> This fails to return any hits for me:
>
> PhraseQuery pq = new PhraseQuery();
> pq.add(new Term("body", "aaa ddd"));
>
> while
> PhraseQuery pq = new PhraseQuery();
> pq.add(new Term("body", "aaa"));
> pq.add(new Term("body", "ddd"));
>
> works fine.
> I have tried with both Lucene 2.0 and 2.3 jars.
>
> Please advise!
>
> Thanks,
>
> -Chris
> BTW thanks for the tip about Luke
>
>
> John Griffin wrote:
> > Chris,
> >
> > -----Original Message-----
> > From: Chris Bamford [mailto:[EMAIL PROTECTED]
> > Sent: Thursday, July 10, 2008 9:15 AM
> > To: [email protected]
> > Subject: Re: newbie question (for John Griffin) - fixed
> >
> > Hi John,
> >
> > Please ignore my earlier questions on this subject, as I have got to
> > the bottom of it. I was not passing each word in the phrase as a
> > separate Term to the query;
> >
> > ==I'm not sure I understand. You want a phrase query so they should be
> > ==passed as a phrase in quotes.
> >
> >
> > instead I was passing the whole string (doh!).
> >
> > Thanks.
> >
> > - Chris
> >
> > Chris Bamford wrote:
> >
> > > Hi John,
> > >
> > > Further to my question below, I did some back-to-basics investigation
> > > of PhraseQueries and found that even basic ones fail for me... I found
> > > the attached code on the Internet (see
> > >
> http://affy.blogspot.com/2003/04/codebit-examples-for-all-of-l
> ucenes.html)
> > >
> >
> >
> > > and this fails too... Can you explain why? I would expect the first
> > > test to deliver 2 hits.
> > >
> > > I have tried with Lucene 2.0 and 2.3.2 jars and both fail.
> > >
> > > Thanks again,
> > >
> > > - Chris
> > >
> > >
> > >
> > > Chris Bamford wrote:
> > >
> > > > Hi John,
> > > >
> > > > Just continuing from an earlier question where I asked you how to
> > > > handle strings like "from:fred flintston*" (sorry I have lost the
> > > > original email). You advised me to write my own BooleanQuery and add
> > > > to it Prefix- / Term- / Phrase- Querys as appropriate. I have done
> > > > so, but am having trouble with the result - my PhraseQueries just do
> > > > not get any hits at all :-( My code looks for quotes - if it finds
> > > > them, it treats the quoted phrase as a PhraseQuery and sets the slop
> > > > factor to 0. so, an input of:
> > > >
> > > > subject:"Good Morning"
> > > >
> > > > results in a PhraseQuery (which I add to my BooleanQuery and then
> > > > dump with toString()) of:
> > > >
> > > > +subject:"good morning"
> > > >
> > > > ... which fails. However, if I break it into 2 TermQuerys, it works
> > > > (but that's not what I want).
> > > >
> > > > What am I missing?
> > > >
> > > > Thanks,
> > > >
> > > > - Chris
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