Is this possible?
Not currently, the highlighter works with a list of words (or words AND phrases
using the new span support) and highlights those.
To do anything else would require the higlighter to faithfully re-implement
much of the logic in all of the different query types (fuzzy, wildcard, regex
etc etc) which is much more challenging/difficult to maintain.
----- Original Message ----
From: "Sertic Mirko, Bedag" <[EMAIL PROTECTED]>
To: java-user@lucene.apache.org
Sent: Thursday, 11 September, 2008 12:07:36
Subject: AW: AW: Search with multiple wildcards
Ok, one final question:
If i query for "*ll*", the query is expanded to ("hallo" or "alle" or ...), so
the
Highligter will highlight the words "hallo" or "alle". But how can i highlight
only
the original query, so only the "ll"? Is this possible?
Thanks a lot
Mirko
-----Ursprüngliche Nachricht-----
Von: mark harwood [mailto:[EMAIL PROTECTED]
Gesendet: Donnerstag, 11. September 2008 11:20
An: java-user@lucene.apache.org
Betreff: Re: AW: Search with multiple wildcards
You need to call rewrite on the query to expand it then give that version to
the highlighter - see the package javadocs.
http://lucene.apache.org/java/2_2_0/api/org/apache/lucene/search/highlight/package-summary.html#package_description
Cheers
Mark
----- Original Message ----
From: "Sertic Mirko, Bedag" <[EMAIL PROTECTED]>
To: java-user@lucene.apache.org
Sent: Thursday, 11 September, 2008 9:34:13
Subject: AW: Search with multiple wildcards
Ok, i gave it a try, but i ran into this TooManyClauses Exception. I see that
3ildcard queries are expanded before they are processed, and I see that i can
set the clauses count to Integer.MAXVALUE, and queries can consume a lot of memory,
but one final thing is still open: does a wildcard query work together with
the Lucene Highlighter? I tried it, but I only got an empty result. Without
wildcards, the highlighter works pretty smooth!
Regards
Mirko
-----Ursprüngliche Nachricht-----
Von: Erick Erickson [mailto:[EMAIL PROTECTED]
Gesendet: Mittwoch, 10. September 2008 18:15
An: java-user@lucene.apache.org
Betreff: Re: Search with multiple wildcards
Of course you can construct your own BooleanQuery
programmatically.
It's relatively easy, just try it.
On Wed, Sep 10, 2008 at 11:52 AM, Sertic Mirko, Bedag <[EMAIL PROTECTED]
wrote:
Jep, this is what i have read.
do I need to use the query parser, or can I create a query by the api?
Is there an example available?
Thanks a lot
Mirko
-----Ursprüngliche Nachricht-----
Von: Erick Erickson [mailto:[EMAIL PROTECTED]
Gesendet: Mittwoch, 10. September 2008 16:45
An: java-user@lucene.apache.org
Betreff: Re: Search with multiple wildcards
Is this what you're referring to?
Lucene supports single and multiple character wildcard searches within
single terms (not within phrase queries).
(from http://lucene.apache.org/java/docs/queryparsersyntax.html)
I'm pretty sure you can have multiple *terms* with wildcards. Luke is your
friend here, download a copy and try it <G>. Be sure on the search tab to
specify StandardAnalyzer or some such, rather than keywordanalyzer.
The phrase is trying to point out that a phrase query does NOT respect
wildcards. That is, submitting
"ab* bc* cd*" AS A PHRASE QUERY won't do what you expect. But I'm pretty
sure that
+field:ab* +field:bc* +field:cd*
will work just fine. The key here is "within single terms", which I think
of
as
"within a single term query". You can add as many TermQuerys as you want.
See the query documentation for how to submit phrase queries.
Best
Erick
On Wed, Sep 10, 2008 at 10:11 AM, Sertic Mirko, Bedag
<[EMAIL PROTECTED]
wrote:
Hi
Thank you for your quick response:-)
Of course I need to use the * character :-) But I have read somewhere in
the documentation that leading wildcards are not supported, and only one
wildcard term per query. Is this limitation resolved in the current
version?
Regards
Mirko
-----Ursprüngliche Nachricht-----
Von: Erick Erickson [mailto:[EMAIL PROTECTED]
Gesendet: Mittwoch, 10. September 2008 15:47
An: java-user@lucene.apache.org
Betreff: Re: Search with multiple wildcards
Sure, but you'll have to set the leading wildcard option,
which I've forgotten the exact call, but it's in the docs.
And use * rather than % <G>.
But wildcards are tricky, especially the TooManyClauses
exception. You might want to peruse the archive for wildcard
posts...
Best
Erick
On Wed, Sep 10, 2008 at 9:06 AM, Sertic Mirko, Bedag
<[EMAIL PROTECTED]>wrote:
[EMAIL PROTECTED]
Is it possible to do a search with multiple wildcards in one query, for
instance "%MANAGE%" AND "CORE%"? Is there a code example available?
Thanks a lot
Mirko
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