how to access data from dataEngine::query in javascript?

[Thomas Fjellstrom]

On June 29, 2010, Aaron J. Seigo wrote:
> On June 29, 2010, Thomas Fjellstrom wrote:
> > It is not absolutely necessary. But I can see wanting to group by type.
> > I'm
> 
> which can be accomplished in the visualization by looking at the type.
> which is, i suppose, why you asked for something like a
> getSourcesByProperty method. i'd prefer not to offer that as it is not
> generic enough: most visualizations have no need for it, and others
> would want/need something more complex. it's easier, for now at least,
> to just put such filtering in the visualization code.
> 
> > > to me, it would seem more natural to just list the hosts and the
> > > visualization can initially iterate over all sources() and then
> > > connect to the sourceAdded and sourceRemoved signals to be notified
> > > when hosts come and go.
> > > 
> > > that would resolve your issue fairly neatly?
> > 
> > It is the first design I thought of. I'm not entirely convinced that
> > grouping is necessary, but if you have a lot of hosts, you may want to
> > hide entire groups of them. With libvirt and Zeroconf/DNDSD sources
> > you could easily have many tens, or hundreds of hosts just appear if
> > you walk into an office building, a data center, or you're sharing a
> > busy wifi network that happens to have wifi-separation turned off. And
> > you may also be interested in /some/ of those hosts but not all, so
> > you may not want to turn off the dynamic sources.
> 
> ... which should be possible in the visualization.

Oh right, just remembered why I needed the extra sources. At least the 
Manual source has a service that allows you to add and delete hosts. I 
imagine the other sources may want services for setting various things.

-- 
Thomas Fjellstrom
tfjellstrom at shaw.ca