One purpose of the reference not is that you don't have to rely on indexing for 
getting to certain nodes. 

If you connect your nodes to the reference node in a way that puts them in 
certain categories you can always get to them via traversal.
Connections to the reference node are also used for visualization (e.g. for 
Neoclipse)

HTH

Michael

>From the docs of the method:
Node getReferenceNode()
Returns the reference node, which is a "starting point" in the node space. 
Usually, a client attaches relationships to this node that leads into various 
parts of the node space. For more information about common node space 
organizational patterns, see the design guide at 
http://wiki.neo4j.org/content/Design_Guide.

Specifically: http://wiki.neo4j.org/content/Design_Guide#Subreferences

Am 20.02.2011 um 21:19 schrieb Mark Nijhof:

> Hi,
> 
> Silly question perhaps, but what is the purpose of the root node? Why would
> I want to get it?
> 
> -Mark
> 
> -- 
> Mark Nijhof
> m: 0047 95 00 99 37
> e:  mark.nij...@cre8ivethought.com
> b:  cre8ivethought.com/blog/index
> 
> 
> 
> "Walking on water and developing software from a specification are easy if
> both are frozen."
> 
> -- Edward V Berard
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