I think you need to pay attention to what td.next() returned; I suspect in your case it returned false which means you cannot use any of its APIs (.doc(), .freq(), etc.) after that.
Mike McCandless http://blog.mikemccandless.com On Thu, May 17, 2012 at 5:52 PM, Edward W. Rouse <ero...@comsquared.com> wrote: > Lucene 3.6, java 1.6 I get the following: > > java.lang.NullPointerException at > org.apache.lucene.index.DirectoryReader$MultiTermDocs.doc(DirectoryReader.ja > va:1179) > > when running this code: > > IndexReader reader = this.getReader(index); > int d = -1; > TermDocs td = reader.termDocs(this.createIdTerm(id)); > if(td != null) > { > td.next(); > d = td.doc(); > } > > private Term createIdTerm(String id) > { > return new Term(Constants.DEFAULT_ID_FIELD, id); > } > > At the time this code runs I would expect that td would be null since there > are no documents in the index that match the term, but that is not the case. > Instead I get the NPE when trying td.doc(). I can wrap the code in a > try/catch for that line, but I think there must be a better way to determine > if I got any matches for a Term. > > Edward W. Rouse > Comsquared System, Inc. > 770-734-5301 > > > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > --------------------------------------------------------------------- To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org For additional commands, e-mail: java-user-h...@lucene.apache.org
