I'll give it a try, thanks.
> Date: Mon, 27 Feb 2012 08:29:57 -0500
> Subject: Re: Most recent document within a group ...
> From: erickerick...@gmail.com
> To: java-user@lucene.apache.org
>
> Just try it. Sorting doesn't load the document, it does load
> the unique values for the sort field. Which is why indexing
> dates benefits from using the coarsest resolution you can,
> i.e. don't store millisecond resolution if all you care about
> is the day something was published.
>
> In fact, sorting doesn't load the documents at all, the values
> are read from the inverted index.
>
> Best
> Erick
>
> On Mon, Feb 27, 2012 at 8:04 AM, Dragon Fly <dragon-fly...@hotmail.com> wrote:
> >
> > Erick, what if the search returns 100,000 hits? I'm trying to avoid loading
> > a large number of documents from disk (i.e. a slow operation) and then pick
> > up the top one. I know how to execute a search (sorted by date). Is there
> > a way to just load the first hit from disk? I don't know which Lucene
> > method call would actually load the documents from disk. searcher.doc ()
> > maybe? Thanks.
> >
> >> Date: Sun, 26 Feb 2012 15:39:21 -0500
> >> Subject: Re: Most recent document within a group ...
> >> From: erickerick...@gmail.com
> >> To: java-user@lucene.apache.org
> >>
> >> Have you looked at the Searcher.search variant
> >> that takes a Sort parameter?
> >>
> >> Best
> >> Erick
> >>
> >> On Sun, Feb 26, 2012 at 8:30 AM, Dragon Fly <dragon-fly...@hotmail.com>
> >> wrote:
> >> >
> >> > Hi,
> >> >
> >> > Let's say I have 6 documents and each document has 2 fields (i.e.
> >> > CustomerName and OrderDate). For example:
> >> >
> >> > Doc 1 John 20120115
> >> > Doc 2 Mary 20120113
> >> > Doc 3 Peter 20120117
> >> > Doc 4 Kate 20120208
> >> > Doc 5 John 20120211
> >> > Doc 6 Alan 20110423
> >> >
> >> > Is there a way to execute a search to return the document with the most
> >> > recent OrderDate for a CustomerName? For instance, if I search for John,
> >> > it should return Doc 5 (because Doc 5 is more recent than Doc 1). Thank
> >> > you.
> >>
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