The lucene FAQ says: What wildcard search support is available from Lucene? Lucene supports wild card queries which allow you to perform searches such as book*, which will find documents containing terms such as book, bookstore, booklet, etc. Lucene refers to this type of a query as a 'prefix query'.
Lucene also supports wild card queries which allow you to place a wild card in the middle of the query term. For instance, you could make searches like: mi*pelling. That will match both misspelling, which is the correct way to spell this word, as well as mispelling, which is a common spelling mistake. Another wild card character that you can use is '?', a question mark. The ? will match a single character. This allows you to perform queries such as Bra?il. Such a query will match both Brasil and Brazil. Lucene refers to this type of a query as a 'wildcard query'. Leading wildcards (e.g. *ook) are not supported by the QueryParser by default. As of Lucene 2.1, they can be enabled by calling QueryParser.setAllowLeadingWildcard( true ). Note that this can be an expensive operation: it requires scanning the list of tokens in the index in its entirety to look for those that match the pattern. Br. Jason Jiao >-----Original Message----- >From: ext Daniel Noll [mailto:[EMAIL PROTECTED] >Sent: Tuesday, August 26, 2008 10:50 AM >To: java-user@lucene.apache.org >Subject: Re: How to search > >Venkata Subbarayudu wrote: >> Hi Anshum Gupta, >> Thanks for your replay, but when I gone through >> querySyntax-Document for Lucene, I read that Lucene does not allow >> queries like "*findthis" i.e. I think it doesnot allow >wildcards in the beginning of the query. > >It has supported this for some time now, just not by default. > >Daniel > >-- >Daniel Noll > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
