Right, so I got all confused with the chemistry -- That solution won't work.
If you're just allowing them to do wildcards by tokenizing on the syntax of chemistry, then you could split the words up according to that.. -----Original Message----- From: Hackl, Rene [mailto:[EMAIL PROTECTED] Sent: Monday, September 29, 2003 9:20 AM To: '[EMAIL PROTECTED]' Subject: derive tokens from single token Hi All, I'm looking for a way to implement simultaneous left and right truncation. The goal is to enable the user to search for e.g. "*hydronaphth*" and find "hexahydronaphthalene" as well as "heptahydronaphthalin". To achieve that functionality, I'd like to index terms in the way that from a token "foobar" the tokens "oobar" and "obar" ( e.g. mininum word length = 4) would be derived and added to the index. I tried to extend TokenFilter, but all I get is either "oobar" or "obar", depends on when 'return' is called. How could I add such extra tokens to the tokenStream? Any thoughts on this appreciated. Best regards, Ren� Hackl --------------------------------------------------------------------- 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]
