Tim,
The trick is to use PerFieldAnalyzerWrapper with QueryParser, using
StandardAnalyzer as the default, and using KeywordAnalyzer for each
of the fields that should not be analyzed. KeywordAnalyzer is in the
trunk of Subversion right now, not in a released version.
<http://svn.apache.org/repos/asf/lucene/java/trunk/src/java/org/
apache/lucene/analysis/KeywordAnalyzer.java>
It was developed for Lucene in Action also, so it is in that codebase
which you can download from http://www.lucenebook.com
Keep in mind that QueryParser may still interfere with keyword fields
if there are characters in them that are special to the parser, such
as parenthesis.
Erik
On 24 Nov 2005, at 09:09, <[EMAIL PROTECTED]>
<[EMAIL PROTECTED]> wrote:
Hi,
Our index has a large text field, and a number of "keyword" fields
with
things such as the publication code, article reference and so on.
We're analysing using the StandardAnalyzer, which works well.
Obviously
the fields which are defined as Field.Keyword don't run through the
analyzer.
The problem comes when we search using a QueryParser. If we've
inserted
a field using:
Field.Keyword("pubcode"."PUB123");
We then search using
Query q = QueryParser.parse(query, "text", new StandardAnalyzer());
When we try to search on something like:
"pubcode:PUB123" - the analyzer promptly lowercases the search
term, and
we get no hits back.
Is there any way to explain that where a search term is being applied
against a field of type Keyword, that it shouldn't be run through the
analyzer?
We can get around this by creating separate Query objects and joining
them with a BooleanQuery, but we were hoping to be able to handle
all of
our queries using QueryParser so that we could easily store queries as
String objects.
Cheers,
Tim.
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