[Developers] Steps Toward a Complete History Export in Freebase

[Kurt Bollacker]

On Mon, Jun 01, 2009 at 11:15:33PM -0700, John Giannandrea wrote:
> 
> Kurt Bollacker wrote:
> > The problem is in specifying the "valid" property of links.  Live
> > properties are "valid":true, replaced properties are "valid":false,
> > and deleted properties are "valid":null.  So it's not possible to ask
> > for deleted links directly.
> 
> yes, its a bug that you cant ask for only deleted links, and that you  
> cant mix operation:null with valid:false.
> I could not find the previous bug you said you filed, so I opened https://bugs.freebase.com/browse/MQL-538 
>   to track this.

The previous bug was MQL-258.  Not exactly the same, but close enough
that I believe they are the same problem.
 
> You can, however, get all link changes, including deletes with this  
> query:  http://tinyurl.com/nntmcv

Thanks. That works for a single topic, but if I am examining user
behavior over all of Freebase, I hit the described problems.


								Kurt :-)
 
> -jg
> 
> _______________________________________________
> Developers mailing list
> Developers at freebase.com
> http://lists.freebase.com/mailman/listinfo/developers