yes, ok , i understod... but, are you telling me Lucene is going backward instead of forward? in the previous release was possible get terms from a MultiTermQuery, now not anymore? i think there has to be a way to get Term from those query that extends MultiTermQuery. Anybody can help please? thank you.
-- On Mon, 24 Feb 2003 07:38:03 Tatu Saloranta wrote: >On Monday 24 February 2003 04:39, none none wrote: >> hi, >> i saw some changes on the MultiTermQuery, it is abstract and there is no >> getQuery() anymore. How do i get all the terms from all the classes that >> extends MultiTermQuery ?? Anybody can help me? i am moving my software to >> latest version, currently is 1.2 in my application. thank you. > >It would be nice if all queries would have a method that allows terms to be >collected, ie. so that Query base class would have an abstract method. >Visitor pattern might make most sense; so we could have a TermCollector >object, and queries could have method like: > >void collectTerms(TermCollector c) > >which would do something like > >c.collectTerm(t, this); > >for each term it contains, and/or > >q.collectTerms(c) > >for each sub-query it contains, to get terms recursively. > >Then, TermCollector would need to define 'collectTerm(Term t, Query q);' to >collect all terms, and have method(s) for getting all terms plus resetting it >(if it's to be reused). Some TermCollectors could also keep track of queries >terms came from, to allow keeping track of phrase query term dependencies >etc. etc. >Using visitor would be more elegant than having to check class types and casts >when traversing. Plus, when adding new queries, would only need to add that >one method, and visitors would still work ok. > >... having described this, I probably should just go and implement it I guess. >:-) > >-+ Tatu +- > > > >--------------------------------------------------------------------- >To unsubscribe, e-mail: [EMAIL PROTECTED] >For additional commands, e-mail: [EMAIL PROTECTED] > > _____________________________________________________________ Get 25MB, POP3, Spam Filtering with LYCOS MAIL PLUS for $19.95/year. http://login.mail.lycos.com/brandPage.shtml?pageId=plus&ref=lmtplus --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
