You can also use MultiDocValues.getNumericDocValues(reader, field): it returns a "wrapper" that will do the binary search on every doc lookup.
If you are only looking up a small number of hits (e.g. the current "page" for the user) then typically this cost is fine. Mike McCandless http://blog.mikemccandless.com On Wed, Oct 23, 2013 at 3:46 AM, Adrien Grand <jpou...@gmail.com> wrote: > Hi Stephen, > > On Wed, Oct 23, 2013 at 9:29 AM, Stephen GRAY <stephen.g...@immi.gov.au> > wrote: >> UNOFFICIAL >> Hi everyone, >> >> I have a question about how to retrieve the values in a >> NumericDocValuesField. I understand how to do this in situations where you >> have an AtomicReaderContext available >> (context.reader().getNumericDocValues(field)). However in a situation where >> I have just done a search and only have a searcher available, and I want to >> get the NumericDocValue in each document returned by the search, is there a >> way to do this? > > The purpose of doc values is usually scoring, sorting or faceting but > here you are willing to actually use them as stored fields. I would > recommend storing this numeric field value twice, once as a > NumericDocValuesField and once as a StoredField. > > Otherwise, what you want to do is still possible (but a bad > trade-off), for every document, you can find its AtomicReader by > calling ReaderUtil.subIndex on the IndexReader.leaves() of your index > reader (that you can get from the IndexSearcher by calling > IndexSearcher.getIndexReader). > > -- > Adrien > > --------------------------------------------------------------------- > 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
