[rules-users] DROOLS FLOW: Accessing the Map parameter object in a Java constraint evaluation function

[Kris Verlaenen]

If you add a map when starting a process, those values will be set as 
process variables.  For example:
[ a : "SomeString"; b : 3 ].

Simplest way to access these variables in a constraint is using a code 
constraint, something like:
return "SomeOtherString".equals(a);
or
return b > 2;

So you can just use process variables in your code constraints as if they 
were local variables.  You just have to make sure you define them as process 
variables (click on the background of your flow and edit the variables 
property to do this).

Kris

----- Original Message ----- 
From: "jeanjvr" <jeanjvr at live.co.za>
To: <rules-users at lists.jboss.org>
Sent: Monday, April 12, 2010 12:17 PM
Subject: [rules-users] DROOLS FLOW: Accessing the Map parameter object in a 
Java constraint evaluation function


>
> I cannot find an example of this in the documentation and a search on the
> mailing list was fruitless.
>
> Right now my test process works fine - the constraints in Split Nodes are
> set "always true" with different  priorities.
>
> I need to access the variables inside the Map parameter sent into the
> process when it is started by using a Java evaluation function in a Split
> Node:
>
> _processinstance = _ksession.startProcess("flow0", _parameters);
>
> I just don't know how to reference that Map parameter in the Java code in 
> a
> Split node.
>
>
> Thanks for any advice.
>
>
>
>
>
> -- 
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