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Simon Willnauer commented on LUCENE-3041: ----------------------------------------- chris are you going to revisite this? I think we can make good use of this though. simon > Support Query Visting / Walking > ------------------------------- > > Key: LUCENE-3041 > URL: https://issues.apache.org/jira/browse/LUCENE-3041 > Project: Lucene - Java > Issue Type: Improvement > Components: core/search > Affects Versions: 4.0 > Reporter: Chris Male > Assignee: Simon Willnauer > Priority: Minor > Fix For: 4.0 > > Attachments: LUCENE-3041.patch, LUCENE-3041.patch, LUCENE-3041.patch, > LUCENE-3041.patch, LUCENE-3041.patch > > > Out of the discussion in LUCENE-2868, it could be useful to add a generic > Query Visitor / Walker that could be used for more advanced rewriting, > optimizations or anything that requires state to be stored as each Query is > visited. > We could keep the interface very simple: > {code} > public interface QueryVisitor { > Query visit(Query query); > } > {code} > and then use a reflection based visitor like Earwin suggested, which would > allow implementators to provide visit methods for just Querys that they are > interested in. -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org