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From climbingrose <>
Subject Re: history
Date Sun, 08 Jul 2007 11:47:16 GMT
Accidentally I have a very similar use case. Thanks for advice.

On 7/8/07, Yonik Seeley <> wrote:
> On 7/7/07, Brian Whitman <> wrote:
> > I have been trying to plan out a history function for Solr. When I
> > update a document with an existing unique key, I would like the older
> > version to stay around and get tagged with the date and some metadata
> > to indicate it's not "live." Any normal search would not touch
> > history documents.
> Interesting...
> One might be able to accomplish this with the update processors that
> Ryan & I have been batting around for the last few days, in
> conjunction with updateable documents, which is on-deck.
> The first idea that comes to mind is that during an update, you could
> change the id of the older document to be something like
> id_<timestamp>, and reindex it with the addition of a live:false
> field.
> For normal queries, use a filter of -live:false filter.
> For all old of a document, use a prefix query id:mydocid_*
> for all versions of a document, use query id:mydocid*
> So if you can hold off a little bit, you shouldn't need a custom query
> handler.  This will be a good use case to ensure that our request
> processors and updateable documents are powerful enough.
> -Yonik


Cuong Hoang

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