Hi Ramprakash, the query parser cannot handle that out of the box. Applying such filters or special Queries like SpanQueries can only be applied in Java code. In general you should always create-machine generated queries not by doing string concats and then calling the queryparser, instead build the query tree using the constructors of various queries and filter classes.
If you really need support inside a queryparser that parses strings, you have to write your own one or modify the existing queryparser to detect the syntax and apply the filters. Uwe ----- Uwe Schindler H.-H.-Meier-Allee 63, D-28213 Bremen http://www.thetaphi.de eMail: u...@thetaphi.de > -----Original Message----- > From: Ramprakash Ramamoorthy [mailto:youngestachie...@gmail.com] > Sent: Tuesday, November 12, 2013 7:46 AM > To: java-user@lucene.apache.org > Subject: Associating a FieldValueFilter with a search query > > Hello, > > I would like to search for documents that do not have a value for a particular > field. I understand org.apache.lucene.search.FieldValueFilter > serves the purpose to filter out documents that have/do-not-have a value. > > I am just wondering the way to associate this filter with a Query object. I > use > QueryParser to construct the Query object. Let me illustrate with a sample > query. > > Sample Query : (Author:John OR Author:Harry) AND (-Published_Year:NULL > OR > Title:Delhi*) > > In the above query, I just want to use the FieldValueFilter for the criteria > *- > Published_Year:NULL* > > Am I missing something basic here? Glad if you can help. Thanks in advance. > > -- > With Thanks and Regards, > Ramprakash Ramamoorthy, > Chennai, India --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
