[rules-users] Traverse object chain from Guvnor

[Michael Anstis]

Add an Expression instead of a field when adding a constraint to a pattern
in the guided rule editor.

With the Expression Builder you'll be able to traverse your object model.


On 4 October 2013 08:26, rockford <ken.helmes at iprocesses.com> wrote:

> I am working on a risk scanning application and evaluation Drools / Guvnor
> for the application.
>
> The rules will be written to check messages with structure like:
> <message>
>     <attribute>value</attribute>
>     <attribute>value</attribute>
>     <levelTwo>
>          <attribute>value</attribute>
>          <attribute>value</attribute>
>                 <levelTwo>
>                      <attribute>value</attribute>
>                      <attribute>value</attribute>
>                             <levelThree>
>                                   <attribute>value</attribute>
>                                   <attribute>value</attribute>
>
> The desired value to check would be something like:
> message.levelTwo.levelThree.attribute - where levelTwo and levelThree are
> objects from a list.
>
> I know that this is possible using drl/mvel/java, but I am wondering if
> this
> will work with Guvnor UI?  We have several users writing tens of rules and
> the users don't necessarily have the technical ability to write drl style
> rules.
>
> Does anyone know of a way to do this with the Guvnor UI?
>
> Ken
>
>
>
>
>
> --
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