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From "Erick Erickson" <erickerick...@gmail.com>
Subject Re: Sort by date with Lucene 2.2.0 ...
Date Fri, 19 Oct 2007 00:46:36 GMT
Maybe I'm missing something, but that looks like the correct
order to me, they are both on September 02, 2007, 11:30 P.M, and
]24 seconds is before 48 seconds.....

Or is it just late and I'm missing the obvious (a specialty of mine)...

Erick

On 10/18/07, Dragon Fly <dragon-fly999@hotmail.com> wrote:
>
>
> Hi,
>
> I'm am trying to sort a date field in my index but I'm seeing strange
> results.  I have searched the Lucene user mail archive for Datetools but
> still couldn't figure out the problem.
>
> The date field is indexed as follows (i.e. DateTools is used, date field
> is stored and untokenized):
>
> String dateString = DateTools.dateToString (myDateObject,
> DateTools.Resolution.SECOND);
> Field field = new Field (DATE_FIELD, dateString, Field.Store.YES,
> Field.Index.UN_TOKENIZED);
> field.setOmitNorms (true);
> document.add (field);
>
> =====
>
> I executed the search with a reverse sort on the DATE_FIELD:
>
> QueryParser queryParser = new QueryParser ("field1", new StandardAnalyzer
> ());
> Query query = queryParser.parse ("txt:\"sum\"");
> IndexSearcher searcher = new IndexSearcher (indexDirectory);
> TopFieldDocs topFieldDocs = searcher.search (query, null, 10000, new Sort
> (DATE_FIELD, true));
>
> for (int i = 0; i < topFieldDocs.totalHits; i++)
> {
>   Document document = searcher.doc (topFieldDocs.scoreDocs[i].doc);
>   String date = document.get (DATE_FIELD);
>
>   System.out.println (date);
> }
>
> ====
>
> As you can see, the output below is not sorted correctly (e.g.
> 20070902233024 comes before 20070902233048).  Does anyone know what the
> problem is? Thank you.
>
>
> 20070905140251
> 20070902233024
> 20070902233048
> 20070902234113
> 20070901040321
> 20070901040751
> 20070901040922
> 20070901042706
> 20070901042603
> 20070901050936
> 20070901050935
> 20070901050935
> 20070901080218
>
>
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