Hey Dirk,
Trunk already supports || and && without sub-rule generation.
rule "severe bugs for which a member of your group is dev or support owner"
when
$group : UserGroup( )
$badBugs : List() from
collect( Bug( (devOwner memberOf $group || supportOwner memberOf
$group),
severity == "hair-on-fire" )
then
$group.runAroundInStarkRavingPanicOver($badBugs)
end
Just remember that collect is heavy. :) Other than that you are fine. And
use || and && for connecting constraints (no sub-rule generation) and
"and"
and "or" for connecting CE's.
[]s
Edson
2007/5/29, Dirk Bergstrom <dirk(a)juniper.net>:
In my ongoing efforts to abuse Drools syntax, I would like to write rules
like this:
rule "severe bugs for which a member of your group is dev or support
owner"
when
$group : UserGroup( )
$badBugs : List() from
collect( Bug( (devOwner memberOf $group or supportOwner memberOf $group),
severity == "hair-on-fire" )
then
$group.runAroundInStarkRavingPanicOver($badBugs)
end
Will that work? Is that the right syntax? Will it be performant if I've
got
10000 Bugs and 1000 UserGroups?
According to Mark's "What's New in JBoss Rules 4.0" presentation, you
can
use &&
and || without subrule generation, and I have a vague memory of seeing
something
about "and" & "or" as well, but I can't remember where I saw
it.
Thanks.
--
Dirk Bergstrom dirk(a)juniper.net
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