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From "Erick Erickson" <>
Subject Re: Field sorting when same doc has multiple values for a field
Date Mon, 22 Dec 2008 23:19:41 GMT
You're off in undefined territory. From the docs for the Sort

<<<...Documents must contain a single term in such a field,
and the value of the term should indicate the document's
relative position in a given sort order. The field must be indexed,
but should not be tokenized, ...>

Whatever is actually going on under the covers, you can't
count on it anyway....

I'd create a "sort_letter" field that *only* got the single
value you want to sort on (as above) and sort on that....


On Mon, Dec 22, 2008 at 5:13 PM, Andre Rubin <> wrote:

> Hi all,
> Has anyone been through this issue?
> I have documents that have one or more values for the same field. For
> example:
> doc1 = new Document();
> doc1.add(new Field("Letter"), "A", ...);
> doc1.add(new Field("Letter"), "C", ...);
> // doc1.add(other fields);
> //write to index
> Now I add another document:
> doc2 = new Document();
> doc2.add(new Field("Letter"), "B", ...);
> //...
> //write to index
> Now, when I query, sorting by "Letter" field, doc2 will return before
> doc1. I think it is sorting by the last value added to the field
> (therefore, B precedes C), but I cannot make any assumptions on the
> order that I add the fields to my documents.
> Is there a way to handle the sorting within a document as well,
> instead of only among different documents? I wanted doc1 to be sorted
> as if its "Letter" was "A" (lexicographic order).
> Thanks,
> Andre
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