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http://issues.apache.org/bugzilla/show_bug.cgi?id=33449 Summary: [PATCH] Introduction of QueryFactory interface for Query construction Product: Lucene Version: unspecified Platform: Other OS/Version: Linux Status: NEW Severity: enhancement Priority: P2 Component: QueryParser AssignedTo: lucene-dev@jakarta.apache.org ReportedBy: [EMAIL PROTECTED] To override the default behaviour of the QueryParser you must currently extend it and override the appropriate methods. This seemed to be a little awkward. To enable a (hopefully) more flexible means of creating Query instances it would seem better to introduce a QueryFactory interface and pass an instance of an implementation of this interface to the QueryParser, having the QueryParser callback to it to construct the query as it parses it. With this design you could write something like: QueryParser parser = new QueryParser("defaultField", new StandardAnalyzer(), new QueryFactoryImpl()); Where 'QueryFactoryImpl' is an implementation of the QueryFactory interface. If you wanted to add the ability to lower case all of your queries you could then write: QueryParser parser = new QueryParser("defaultField", new StandardAnalyzer(), new LowerCaseQueryFactory(new QueryFactoryImpl())); Where 'LowerCaseQueryFactory' is a decorator around another QueryFactory instance and it simply lowercases all the terms passed to it before delegating the actual query construction. This is a simple example, but more powerful functionality could be added not by changing the QueryParser, but by creating a new QueryFactory implementation. I have a patch for this which will be forthcoming in a moment. -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]