I written a LocalTaskService example just to play with it. Just want to share it out. Do modify the persistence.xml accordingly.
Cheers.
Some of my jar list:
drools-compiler-5.3.0.Final.jar
drools-core-5.3.0.Final.jar
javassist-3.15.0-GA.jar
jbpm-bpmn2-5.2.0.Final.jar
jbpm-flow-5.2.0.Final.jar
jbpm-human-task-5.2.0.Final.jar
jbpm-workitems-5.2.0.Final.jar
knowledge-api-5.3.0.Final.jar