[rules-users] before/after behavior for negative pattern

[Rob21]

Actually i meant that the first rule worked for every beginning of scenario,
except the first scenario if the first event is a RawEvent. The second rule
doesn't work at all and gives me this :

Thread [main] (Suspended (exception NullPointerException))	

BeforeEvaluatorDefinition$BeforeEvaluator.evaluateCachedLeft(InternalWorkingMemory,
VariableRestriction$VariableContextEntry, Object) line: 343	
	EvaluatorConstraint.isAllowedCachedLeft(ContextEntry, InternalFactHandle)
line: 67	
	DoubleBetaConstraints.isAllowedCachedLeft(ContextEntry[],
InternalFactHandle) line: 168	
	NotNode.assertLeftTuple(LeftTuple, PropagationContext,
InternalWorkingMemory) line: 80	
	SingleLeftTupleSinkAdapter.doPropagateAssertLeftTuple(PropagationContext,
InternalWorkingMemory, LeftTuple) line: 196	

SingleLeftTupleSinkAdapter.createAndPropagateAssertLeftTuple(InternalFactHandle,
PropagationContext, InternalWorkingMemory, boolean, LeftInputAdapterNode)
line: 145	
	LeftInputAdapterNode.assertObject(InternalFactHandle, PropagationContext,
InternalWorkingMemory) line: 154	
	CompositeObjectSinkAdapter.doPropagateAssertObject(InternalFactHandle,
PropagationContext, InternalWorkingMemory, ObjectSink) line: 497	
	CompositeObjectSinkAdapter.propagateAssertObject(InternalFactHandle,
PropagationContext, InternalWorkingMemory) line: 382	
	ObjectTypeNode.assertObject(InternalFactHandle, PropagationContext,
InternalWorkingMemory) line: 235	
	EntryPointNode.assertObject(InternalFactHandle, PropagationContext,
ObjectTypeConf, InternalWorkingMemory) line: 240	
	NamedEntryPoint.insert(InternalFactHandle, Object, Rule, Activation,
ObjectTypeConf) line: 337	
	NamedEntryPoint.insert(Object, boolean, boolean, Rule, Activation) line:
298	
	ReteooStatefulSession(AbstractWorkingMemory).insert(Object, boolean,
boolean, Rule, Activation) line: 888	
	ReteooStatefulSession(AbstractWorkingMemory).insert(Object) line: 847	
	StatefulKnowledgeSessionImpl.insert(Object) line: 269	
	DroolsTest.sendEvents(String, StatefulKnowledgeSession) line: 85	
	DroolsTest.main(String[]) line: 62	

About "this != $start", i tried that also as the documentation contains a
similar example with heartbeats.
Still for this rule : 
rule "Detect it"
	when
		$start : RawEvent()
		not RawEvent(this != $start, id == $start.id, $start after[0s, 90s] this)
	then
		System.out.println($start);
end
The application terminates and Drools answers this :
Unable to Analyse Expression this != $start && after0.evaluate( $start, this
):
[Error: unable to resolve method using strict-mode:
com.sample.RawEvent.after0()]
[Near : {... this != $start && after0.evaluate( $start, this ....}]
             ^ : [Rule name='Detect it']

java.lang.IllegalArgumentException: Could not parse knowledge.
	at com.sample.DroolsTest.readKnowledgeBase(DroolsTest.java:109)
	at com.sample.DroolsTest.main(DroolsTest.java:54)

Which I don't understand



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