Thanks Alejandro,
using flag files isn't an option for me. I'd rather go for a specific
action which implements this functionality.
This has other drawbacks but probably fits my needs better.

Thank you for your reply,
Lars


On Mon, May 7, 2012 at 5:41 PM, Alejandro Abdelnur <[email protected]>wrote:

> Lars,
>
> This functionality has not been implemented yet.
>
> You could modeled it using an input dataset as flag file.
>
> Thx.
>
> Alejandro
>
> On Mon, May 7, 2012 at 3:33 AM, Lars Grote <[email protected]> wrote:
> > Hi there,
> > I'm using oozie to manage a quite complex set of workflows. Which works
> > fine in most cases.
> > Currently I'm having a problem with preconditions. I read those specs
> >
> http://incubator.apache.org/oozie/docs/3.1.3/docs/CoordinatorFunctionalSpec.html#a6.1.1._Coordinator_Application
> > There is stated that Oozie is able to react to the "the availability of
> new
> > dataset instances or other *external events*."
> >
> > How can I make use of those *external events*? Cause that's the exact
> > problem that I'm facing right now.
> > Basically what I was hoping for is a precondition tag which just checks
> if
> > the content is true or false. Cause then
> > I would be able to implement the check as EL extension.
> >
> > as Example:
> > <input-events>
> >   <test>[MY FANCY EL EXPRESSION]</test>
> > </input-events>
> >
> > Is there any way to get this behavior, any workaround or something?
> >
> > Thanks in advance,
> > Lars
>
>
>
> --
> Alejandro
>

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