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From: Kumaran Ramasubramanian <kums.134@gmail.com>
Date: Thu, 2 Jun 2016 00:45:13 +0530
Message-ID: <CAHTScUj1gmMxiPDJYVJTWaPX6uH7CWZuZeTnMtMqkW=Fh8vKbA@mail.gmail.com>
Subject: Difference in Retrieving values of a docvalue field using
 atomicreader over duplicate StoredField
To: "java-user@lucene.apache.org" <java-user@lucene.apache.org>
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archived-at: Wed, 01 Jun 2016 19:15:57 -0000

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Hi All,


In javadoc of every docvalue field
<https://lucene.apache.org/core/4_10_4/core/org/apache/lucene/document/Sort=
edNumericDocValuesField.html>,
there is line like

=E2=80=8B
> If you also need to store the value, you should add a separate StoredFiel=
d
> <https://lucene.apache.org/core/4_10_4/core/org/apache/lucene/document/St=
oredField.html>
>  instance.=E2=80=8B


https://lucene.apache.org/core/4_10_4/core/org/apache/lucene/document/Sorte=
dNumericDocValuesField.html


But, we are able to retrieve the value of SortedNumericDocValuesField
using AtomicReader also

for (AtomicReaderContext context : indexReader.leaves())
> {
>  AtomicReader atomicReader =3D context.reader();
>  SortedNumericDocValues
>  sortedDocValues=3DDocValues.getSortedNumeric(atomicReader, "Numeric
> =E2=80=8B_docvalue=E2=80=8B
> _price");
> }


=E2=80=8BSo what is the difference actually? Is there any performance or ti=
me taken
issue in retrieving values of a docvalue field using atomicreader over
StoredField? =E2=80=8B

Please clarify me what am i missing?=E2=80=8B

Thanks in advance


=E2=80=8B--=E2=80=8B

Kumaran R

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