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https://issues.apache.org/jira/browse/LUCENE-1872?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12749102#action_12749102
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Uwe Schindler commented on LUCENE-1872:
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bq. I'm confused on why it's the "largest" value? EG if I add 4, 17, 10 as a
NumericField "x" on my doc, when I then try to sort, wouldn't 10 "win" since it
was added last to the document?
Because of the uninverter. It iterates over all terms, starting from the lowest
one in the field. When he comes to term 4, it would add it to the field cache
at the document's position. The same with 10 and then 17. Because the TermEnum
lists 17 at last, it would win:
{code}
long[] retArray = null;
TermDocs termDocs = reader.termDocs();
TermEnum termEnum = reader.terms (new Term(field));
try {
do {
Term term = termEnum.term();
if (term==null || term.field() != field) break;
long termval = parser.parseLong(term.text());
if (retArray == null) // late init
retArray = new long[reader.maxDoc()];
termDocs.seek (termEnum);
while (termDocs.next()) {
retArray[termDocs.doc()] = termval;
}
} while (termEnum.next());
} catch (StopFillCacheException stop) {
} finally {
termDocs.close();
termEnum.close();
}
if (retArray == null) // no values
retArray = new long[reader.maxDoc()];
{code}
> Improve javadocs for Numeric*
> -----------------------------
>
> Key: LUCENE-1872
> URL: https://issues.apache.org/jira/browse/LUCENE-1872
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Michael McCandless
> Assignee: Michael McCandless
> Priority: Minor
> Fix For: 2.9
>
>
> I'm working on improving Numeric* javadocs.
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