Nah, let's just make fuzzy not work in the qp by default :) And make
that back compat while your at it - while not abusing Version so that
it's used for something subjective :) wouldn't want to rile up Hoss.
I'm like 3/4 serious.
- Mark
http://www.lucidimagination.com (mobile)
On Feb 13, 2010, at 10:22 PM, "Robert Muir (JIRA)" <j...@apache.org>
wrote:
[ https://issues.apache.org/jira/browse/LUCENE-2262?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12833496#action_12833496
]
Robert Muir commented on LUCENE-2262:
-------------------------------------
bq. in my opinion disallowing these queries with leading wildcards,
be it * or ? or whatever, is rather silly, since we allow even
slower fuzzyqueries by default.
bq. Agree.
What do you think, should we skip this step then and simply
deprecate the entire setAllowLeadingWildcard concept all together,
setting it to true for Version >= 3.1?
QueryParser should now allow leading '?' wildcards
--------------------------------------------------
Key: LUCENE-2262
URL: https://issues.apache.org/jira/browse/LUCENE-2262
Project: Lucene - Java
Issue Type: Improvement
Components: QueryParser
Affects Versions: Flex Branch
Reporter: Robert Muir
Assignee: Robert Muir
Priority: Minor
Fix For: Flex Branch
Attachments: LUCENE-2262.patch, LUCENE-2262_backwards.patch
QueryParser currently throws an exception if a wildcard term begins
with the '?' operator.
The current documentation describes why this is:
{noformat}
When set, * or ? are allowed as the first character of a
PrefixQuery and WildcardQuery.
Note that this can produce very slow queries on big indexes.
{noformat}
In the flexible indexing branch, wildcard queries with leading '?'
operator are no longer slow on big indexes (they do not enumerate
terms in linear fashion).
Thus, it no longer makes sense to throw a ParseException for a
leading '?'
So, users should be able to perform a query of "?foo" and no longer
get a ParseException from the QueryParser.
For the flexible indexing branch, wildcard queries of 'foo?', '?
foo', 'f?oo', etc are all the same from a performance perspective.
--
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.
---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: java-dev-h...@lucene.apache.org
---------------------------------------------------------------------
To unsubscribe, e-mail: java-dev-unsubscr...@lucene.apache.org
For additional commands, e-mail: java-dev-h...@lucene.apache.org
