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From "Armbrust, Daniel C." <>
Subject RE: Dates before 1970
Date Mon, 10 Jun 2002 13:27:11 GMT
This is part of the reason I keep poking the list for better number support
(and still haven't heard a "peep" as Phil would say about them, so I am
guessing that one or the other or both of 

A: It would take to much redesign to make lucene handle numbers better 
B: No one else has a need for indexing numbers and doing a search of all
docs with X field <300 and > 10)

I do what Phil used to do now, so I can tell you that we ended up trashing
this patch, and doing the dates in the following fashion:

We just made them a "normal" field, but put them in the format of 


(make sure you pad with 0's if necessary - i.e.  19540203) for February
third, 1954.

This way, they sort alphabetically, so we could write our own date filter to
do a proper range query.

The built in date filter is really useless for historical information.

Daniel C. Armbrust 
Medical Informatics Research 
Information Services 
Mayo Clinic Rochester 
Harwick 8-36 
(507) 538-1549

-----Original Message-----
From: Otis Gospodnetic []
Sent: Sunday, June 09, 2002 3:54 PM
To: Lucene Developers List
Subject: Re: Dates before 1970


Ok, I found Philip's patch here:

Am I missing something or is this patch specific to Philip's
application?  I'm referring to the DATE_OFFSET value of 200 years.
Is there any way of making it more generic?
For instance, I'm dealing with dates whose values I do not know ahead
of time.  Some dates that I see are 09-Jun-102 or 25-Oct-100.  These
are dates returned by various broken web servers out there.  These
particular dates should obviously be 09-Jun-2002 and 25-Oct-2000.

What can we do in DateField to allow indexing of dates before 1970?
Does anyone have any suggestions?


--- Otis Gospodnetic <> wrote:
> Hello,
> It looks like DateField.timeToString method won't allow negative
> dates
> (i.e. dates before 1.1.1970).
> If one tries to index a pre-1970 date the following happens:
> java.lang.RuntimeException: time too early
> 	at org.apache.lucene.document.DateField.timeToString(Unknown Source)
> 	at org.apache.lucene.document.DateField.dateToString(Unknown Source)
> I am not the first one to encounter this error.  Philip Ogren hit
> this
> problem a long time ago:
> Does anyone have a workaround?
> In the above message Philip Ogren mentions only a documentation
> change,
> but I think he also submitted a patch, which I now cannot locate.
> Does anyone have this patch?
> Thanks,
> Otis
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