Trying to use the BusinessRule Service Task (org.jbpm.process.workitem.bpmn2.BusinessRuleTaskHandler) I realized that if you setup the "KieSessionType" with the value "stateful" which is the allowed value by the "http://www.drools.org/xsd/kmodule", the "handleStatefull(...)" method is nver called.

Looking into the "org.jbpm.process.workitem.bpmn2.AbstractRuleTaskHandler" which BusinessRuleTaskHandler extends, the static value for "STATEFULL_TYPE" is "statefull" which is different from the allowed value.

I believe this Service Task implementation never worked as expected, so I think it should be fixed or change the value in the "http://www.drools.org/xsd/kmodule".

• org.jbpm.process.workitem.bpmn2.AbstractRuleTaskHandler

STATEFULL_TYPE = "statefull"

• http://www.drools.org/xsd/kmodule (https://www.drools.org/xsd/kmodule_7_1.xsd)

<xsd:simpleType name="ksessionType">
   <xsd:restriction base="xsd:string">
       <xsd:enumeration value="stateless"/>
       <xsd:enumeration value="stateful"/> <<<<<<<<<<<<<<<<<<<<--------------
   </xsd:restriction>
</xsd:simpleType>