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From Adrien Grand <jpou...@gmail.com>
Subject Re: SortedNumericDocValuesFIeld
Date Fri, 27 May 2016 12:32:37 GMT
DocValues.getSortedNumeric is indeed not really useful for high-level code,
such as you example which is getting the sort values for each top hit.
However, if you wanted to implement lower level functionality like building
a histogram of the prices of all matching documents, you would need to
build a custom collector and use these sorted numeric doc values to get the
prices.

Le ven. 27 mai 2016 à 14:10, Chitra R <chithu.r111@gmail.com> a écrit :

> Hi,
>
> i have achieved the same sorting using
>
>         Sort sort = new Sort(new SortedNumericSortField("Numericdoc_price",
> > SortField.Type.LONG,true));
> >         int maxDoc = searcher.getIndexReader().maxDoc();
> >         TopFieldDocs topdocs =searcher.search(query, 10,sort);
> >
> >         for (ScoreDoc scoreDoc : topdocs.scoreDocs) {
> >             doc = reader.document(scoreDoc.doc);
> >             System.out.println(scoreDoc);
> >         }
> >
>
>
> So what is the purpose of sortedDocValues obtained
> from DocValues.getSortedNumeric(atomicReader, "Numericdoc_price");
>
>
>
>
>
> Thanks,
> Chitra
>
>
> On Fri, May 27, 2016 at 3:18 PM, Chitra R <chithu.r111@gmail.com> wrote:
>
> > Hi,
> >      Actually I like to print the sorted numeric list from the
> > sortedDocValues and I dont know which api have to use . Could you please
> > help me to achieve this?
> >
> >
> > Thanks,
> > Chitra
> >
> > On Thu, May 26, 2016 at 8:17 PM, Michael McCandless <
> > lucene@mikemccandless.com> wrote:
> >
> >> This looks about right ... did something go wrong?
> >>
> >> Mike McCandless
> >>
> >> http://blog.mikemccandless.com
> >>
> >> On Thu, May 26, 2016 at 9:29 AM, Chitra R <chithu.r111@gmail.com>
> wrote:
> >>
> >> > Hi,
> >> >       I am new to lucene. Anyone please explain how to sort the
> numeric
> >> > values by SortedNumericDocValuesField?
> >> >
> >> > I tried like this using Lucene 4.10.4:
> >> >
> >> > doc.add(new SortedNumericDocValuesField("Numericdoc_price", 1L));
> >> > doc.add(new SortedNumericDocValuesField("Numericdoc_price", 15L));
> >> > ..
> >> >  for (AtomicReaderContext context : indexReader.leaves()) {
> >> >             AtomicReader atomicReader = context.reader();
> >> >  SortedNumericDocValues
> >> >  sortedDocValues=DocValues.getSortedNumeric(atomicReader,
> >> > "Numericdoc_price");
> >> > }
> >> >
> >> >
> >> >
> >> >
> >> >
> >> > Thanks,
> >> > Chitra
> >> >
> >>
> >
> >
>

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