Web services integration for Drools Flow
by Ajay.Gautam＠rbs.com
Hello,
I am evaluating a few workflow engines for an up coming project. Drools flow is the first one I am looking at.
Question: Is there any existing web services integration with Drools Flow? Specifically:
1. ability to call a service (Similar to "Email" work item)
2. ability to trigger a flow based on web services input (listener)
I could write a web services wrapper around Drools Flow, but am wondering if there is an existing solution for it. A quick Google search did not reveal anything much.
PS: Not looking at jBPM - don't want to get into deploying and maintaining a J2EE container. For our (simple) purposes, something like tomcat would suffice.
Any pointers in the right direction would be greatly appreciated.
Thanks
Ajay
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16 years, 9 months
Re: Drools performance issue
by Mark Proctor
Please send these emails to the user list (in cc) so everyone can help,
not directly to me.
Mark
jayadevan m wrote:
>
> Hi
>
> We have one performance(memory) issue in drools-5
>
> Our Scenario
>
> We have 3 entities
>
> Trip - Entity representing details about trip
>
> Driver - Entity for driver , it contain details about driver
>
> Assignments - details about each assignments (one driver may assigned
> to many trip)
>
> The rule is to find ,"Find overlapping between trip assignments"
>
> For Implementing this we take the Trip ,Driver And Assignments
> entities from Data base and put it into working memory
>
> For Small number of records this rule work well ,
>
> But we want to check it against 15000 driver ,331176 assignments and
> 12745 trips
>
> In that case it take huge amount of time for execution (rule firing )
>
>
>
> Rule is
>
> rule "Assignment Check"
>
> when
>
> $creVo: DriverAssignVO($drId: driverId ,$tid: tripId);
>
> $tripAssignment: TripVO(
>
> $tpid: tripId,
>
> $startDtmUtc: startDtmUtc,
>
> $endDtmUtc: endDtmUtc)
>
> and
>
> $trvo: TripVO(
>
> tripId != $tpid,
>
> tripId in ($tid),
>
> ((startDtmUtc >= $startDtmUtc &&
> startDtmUtc <= $endDtmUtc) ||
>
> (endDtmUtc >= $startDtmUtc && endDtmUtc <=
> $endDtmUtc)));
>
> $crvo: DriverAssignVO($drvrId: driverId , driverId ==
> $drId , tripId != $tid, tripId == $tpid)
>
> then
>
> System.out.println("TRIP ID: " + $crvo.getTripId());
>
> end
>
>
>
> thanks and regards
>
16 years, 9 months
DRL - Accessors that take arguments
by Vidya Chandrasekaran
Hi,
I am fairly new to Drools and am just getting my feet wet with writing
rules.
In my work, I have to integrate drools with classes that do not expose all
properties via getXXX/ isXXX accessor methods but require a call of the form
someMethod("keyvalue"). I have been using the MVEL dialect and do not see a
way to call a function with arguments on the LHS side of a rule either in
the documentation or the mailing list.
In fact, I have been trying something like
rule "rulename"
agenda-group "evaluation"
when
$d: VO( computePrice("key") < 10) from entry-point "Inventory
stream"
then
#
end
This fails with a 'no viable alternative at input '"key"' in rule. Is there
a way this can be accomplished?
Thanks,
Vidya
16 years, 9 months
