Sure, see PerFieldAnalyzerWrapper. It's designed to allow different
analyzers for different fields.
Erick
On 1/12/07, M A <[EMAIL PROTECTED]> wrote:
Analyzer analyzer = new StandardAnalyzer(new String[]{});
The analyzer used in both cases, would be this one in the code, above.
Does this mean i would have to create a new Analyzer and reindex the whole
lot?
Bearing in mind ofcourse that there is also a free text element also,
See this becomes the problem, for the tags I would like an analyser that i
can tokenize by space alone since the tags are fed separated by a space,
However for the free text, need that to be the Analyser above .
i.e. Analyzer analyzer = new StandardAnalyzer(new String[]{});
Is it possible to add 2 different fields to the same document using 2
different analysers? thisis to say
field 1 analyser 1
field 2 analyser 2
int he same document ..
Are there any implications wrt to doing this
On 1/12/07, Erick Erickson <[EMAIL PROTECTED]> wrote:
>
> What analyzers are you using for your queries and your indexing?
> StandardAnalyzer (I believe) will break "A.B" into two tokens , so your
> index could contain both tags. So what you really have in the index
would
> be
> story1 A C E
> story2: A B P Q (note no '.').
>
> searching for B.A would really search for B OR A because of 2 things:
> 1> the tokenizer (assuming StandardAnalyzer or any other analyzer that
> breaks tokens at punctuation) would break the query into two terms.
> 2> the default is OR unless you set the default to AND or specify it in
> the
> query.
>
> If you're using different analyzers, this is irrelevant. Also, this
> assumes
> you're using the query parser.
>
> If you haven't already, I *strongly* recommend you get a copy of Luke
> (google lucene luke). It lets you examine your indexes to see what's
> actually been indexed and lets you examine queries to see what the
actual
> search terms are. It even lets you use different analyzers to see how
they
> behave when it comes to creating a query.
>
> Best
> Erick
>
> On 1/11/07, M A <[EMAIL PROTECTED]> wrote:
> >
> > Hi,
> >
> > We are having some trouble with the results that we get from certain
> > queries.
> >
> > Basically .. we have documents that we index, each document has a
bunch
> of
> > tags, the tags could be of the sort
> >
> > tags: A, B, C, D.P, E.A etc ..
> >
> > Each story will contain only a subset of the tags ..
> >
> > For example
> >
> > Story 1: tags : A, C, E
> > Story 2: tags : B.A, P, Q (note "B.A" is one tag) .
> >
> > Problem occurs when we run a search with query "A" we get both
results,
> > but what we should be getting is just Story 1.
> > Query "B.A" returns the correct value.
> >
> > What would i have to ensure that a search for "A" only matches "A"
and
> > not
> > "B.A"?
> >
> > thanx
> >
> >
>
>
