[rules-users] Live Queries and Expired Events

[Wolfgang Laun]

Oops, sorry, I clean overlooked the "live" in your post. Blind spot.

Sometimes, events aren't retracted because there's some rule that has an
"infinite" backward reach in time. Are the retracted and the remaining
events of the same type and flavour, e.g., by entry-point?

Old events disappearing after insertion after the service has been
interrupted might be due to the engine running with a real-time clock. Any
form of "playback" with inserted events being time-stamped back in the past
should run a virtual clock. If your events are time-stamped by some other
agent than the Engine itself, you can advance the virtual clock according
to these timestamps - the clock will then, eventually, catch up with the
clock of the time-stamping agent.

-W



On 1 November 2011 18:28, Robert Crawford <crawford at kloognome.com> wrote:

> My terms are likely incorrect, but:
>
> -
> Section 4.3.3.2.2. Live Querries:
>
> We have now complimented this with Live Querries, which has a listener
> attached instead of returning an iterable result set. These live querries
> stay open creating a view and publish change events for the contents of
> this
> view. So now you can execute your query, with parameters and listen to
> changes in the resulting view.
> -
>
> The listener is not being called for every event, as I'd expect it to be
> called.
>
>
> --
> View this message in context:
> http://drools.46999.n3.nabble.com/Live-Queries-and-Expired-Events-tp3469198p3471324.html
> Sent from the Drools: User forum mailing list archive at Nabble.com.
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