[rules-users] Drools 5 RuleFlow error in constraints of simplest split node

[Mauricio Salatino]

Yes.. that's because you are using an OR split.. it can not support both
constraints to be true. In other words if you use a type="3" split you don't
need to put that constraints because just one will be triggered.
If you want an XOR or an AND split change the type of the split node. (
type="3")


On Mon, Aug 10, 2009 at 12:30 PM, Marc Dzaebel <mdzaebel at web.de> wrote:

>
> Hi,
>
> after creating the standard RuleFlow example with Drools 5 in Eclipse,
> adding a gateway with two (true) constraints leads to the following error
> "org.drools.compiler.RuleFlowLoadError: Unable to load the rule flow. :
> Exception class org.xml.sax.SAXParseException : <constraint> requires a
> 'toType' attribute". This seems to be a very basic serious problem.
>
> Here is my RuleFlow file in which I only added one split node and a trivial
> output action.
>
> <?xml version="1.0" encoding="UTF-8"?>
> <process xmlns="http://drools.org/drools-5.0/process"
>         xmlns:xs="http://www.w3.org/2001/XMLSchema-instance"
>         xs:schemaLocation="http://drools.org/drools-5.0/process
> drools-processes-5.0.xsd<http://drools.org/drools-5.0/process%0Adrools-processes-5.0.xsd>
> "
>         type="RuleFlow" name="ruleflow" id="com.sample.ruleflow"
> package-name="com.sample" >
>  <header></header>
>  <nodes>
>    <start id="1" name="Start" x="16" y="16" />
>    <actionNode id="2" name="Hello" x="246" y="138" width="80" height="48" >
>        <action type="expression" dialect="mvel" >System.out.println("Hello
> World");</action>
>    </actionNode>
>    <end id="3" name="End" x="468" y="153" width="48" height="48" />
>    <split id="4" name="Split" x="100" y="106" type="3" >
>      <constraints>
>        <constraint toNodeId="2" name="constraint" priority="1" type="rule"
> dialect="mvel" >eval(true)</constraint>
>        <constraint toNodeId="5" name="test" priority="1" type="rule"
> dialect="mvel" >eval(true)</constraint>
>      </constraints>
>    </split>
>    <actionNode id="5" name="Test" x="228" y="51" >
>        <action type="expression" dialect="mvel"
> >System.out.println("Test");</action>
>    </actionNode>
>    <end id="6" name="End" x="467" y="71" />
>  </nodes>
>  <connections>
>    <connection from="4" to="2" />
>    <connection from="2" to="3" />
>    <connection from="1" to="4" />
>    <connection from="4" to="5" />
>    <connection from="5" to="6" />
>  </connections>
> </process>
>
> Any ideas?
>
> Thanks in advance
>
> Marc
>
> --
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> http://www.nabble.com/Drools-5-RuleFlow-error-in-constraints-of-simplest-split-node-tp24901923p24901923.html
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>
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