[rules-users] Drools facts using POJO accessor methods error

[Brad Davis]

Maybe you would be better off leveraging Guvnor for the Rules Editing.  Then you would just need to develop a hook that calls JAXB to take an XML Schema to a Pojo Object Model within the Guvnor system.

Brad Davis
Red Hat Consulting
Email: bdavis at redhat.com | c: 980.226.7865 | http://www.redhat.com 


----- Original Message -----
From: "aliosha79" <alex_orl1079 at yahoo.it>
To: rules-users at lists.jboss.org
Sent: Monday, February 27, 2012 1:30:41 PM
Subject: Re: [rules-users] Drools facts using POJO accessor methods error

my use case is:
XmlDocument ---> via JaxbUnmarshaller ---> POJO java Document

I m implementing a rule editor...
This ruleeditor analyzes the xmldocument and graphically allows me to build
rules by selecting the document xml tree node... of course i can just build
several rules in this way... but for the field which the project is located
in, it's sufficient.
Now in those xml documents there could be sequences of elements which are
turned into java list by Jaxb.
The problem is:
According to my xml nodes selection (ie the node is a list or not)... i have
to be able to write the exact rule.
In the rule structure i have to find the constant parts and the variable
ones.

For a normal node element a possible rule structure is:
when
$Class : MyClass( property == 123)
then
do somthing!
end

For a list instead:

when 
$Class : MyClass ($list :listProperty)
...( this.ListItem.Quantity.Value ==123 ) from $list
then
do something!
end

So, i'm trying to find a common form with the minimum variable parts to be
changed and to obtain a well written rule for both cases.



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