There is also the following, that some guy named Erik contributed recently:
./contrib/regex/src/java/org/apache/regexp/RegexpTunnel.java
./contrib/regex/src/java/org/apache/lucene/search/regex/SpanRegexQuery.java
./contrib/regex/src/java/org/apache/lucene/search/regex/RegexQuery.java
./contrib/regex/src/java/org/apache/lucene/search/regex/JakartaRegexpCapabilities.java
./contrib/regex/src/java/org/apache/lucene/search/regex/JavaUtilRegexCapabilities.java
./contrib/regex/src/java/org/apache/lucene/search/regex/RegexCapabilities.java
./contrib/regex/src/java/org/apache/lucene/search/regex/RegexTermEnum.java
./contrib/regex/src/java/org/apache/lucene/search/regex/RegexQueryCapable.java
As for how to use it, see this:
./contrib/regex/src/test/org/apache/lucene/search/regex/TestSpanRegexQuery.java
./contrib/regex/src/test/org/apache/lucene/search/regex/TestRegexQuery.java
Otis
----- Original Message ----
From: Erik Hatcher <[EMAIL PROTECTED]>
To: java-user@lucene.apache.org
Sent: Thursday, May 4, 2006 6:19:36 AM
Subject: Re: How to realize Sql LIKE?
On May 3, 2006, at 9:39 PM, JustineHMS wrote:
> I m new to Lucene,
>
> Just wondering if there is a way to realize sql 'Like' function in
> Lucene as
> following:
>
> Select * from user_table where username like '%abc%'
>
> I have checked with wildCardQuery, but it can not start with a '%'.
> What about RegexQuery? How to use it?
WildcardQuery does support leading wildcard characters, but
QueryParser is what prohibits it. A custom QueryParser could be
created that removes this restriction. However, the potential of a
"too many clauses" exception is great with WildcardQuery so you'll
want to be careful. Check the list archives for this topic in gory
and never ending detail :)
Erik
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