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Date: Fri, 23 Feb 2007 12:25:51 +1100
From: Antony Bowesman <adb@teamware.com>
Organization: Teamware Group
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To: java-user@lucene.apache.org
Subject: Re: Positions in SpanFirst
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Chris Hostetter wrote:
> : So I don't see why using a SpanNear that respects order and a large
> : IncrementGap won't solve your problem...... Although it would return "odd"
> 
> i think the use case he's worreid about is that he needs to be able to
> find matches just on the "start" of a persons name, ie...
> 
> 	Email#1 To: Jim Bob; Sue Anne-Marie Brown; John Doe
> 	Email#2 To: Tom Smith; Bob Jones; John Doe
> 
> ...he needs to support existing semantics that let him say "find emails
> where the start of a persons name is 'bob' and it returns Email#2, but not
> email#1 .. hence his interest in SpanFirst -- he wants to match the
> "first" few tokens of a "value" added to a field (which isn't waht
> SpanFirst does)

Correct.  That's one of the current search mechanisms.  It's not a major issue 
and I think I'll probably end up ducking it on the basis that the system 
directory defaults to a surname/firstname name order, but of course there's no 
guarantee that mail from other systems will have those names in that order, e.g.

#1 To: Bowesman Antony
#2 To: Antony Bowesman

makes this 'starts with' feature less useful.

Thanks again Hoss and Erick for the suggestions!  This list is excellent and I 
do wonder if you guys actually have day jobs that you are able to do as well as 
give the amount of time you seem to on this list!

Antony


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