Hello Java Lucene dev's, I'm pretty much a newbie when it comes to Lucene. Actually I have a query. I am using Lucene for indexing logs, so as to make the searching of logs effective. No doubt, it is working hassle free, but here is something where I am stuck since days. I want to sort these logs date wise, the latest being the first in the result(descending order). For this, I have added a datetime field during indexing in the document. Something like this: long dateTime = DateUtil.getTime(logObject.getDate(),logObject.getTime(),"dd.MM.yyyy HH:mm:ss:S"); document.add(new LongField("datetime",dateTime,Field.Store.YES)); --- Now while searching, I am adding these lines: TopDocs result = null; ----code here---- Sort sort = new Sort(new SortField("datetime", SortField.Type.LONG)); result = searcher.search(query,recCountToFetch,sort); I wished it would work fine, but then I a came across this error: javax.xml.ws.soap.SOAPFaultException: java.lang.Exception: java.lang.IllegalStateException: unexpected docvalues type NONE for field 'datetime' (expected=NUMERIC). Use UninvertingReader or index with docvalues.
Any hint/ suggestions/ guidance on how to tackle this error? Also please correct me if I am going the wrong way. Thanks in advance! Anticipating your reply. -- Regards, Sheetal Deshpande.