Drools decision table - rules not matching - spring-boot

Question

I have a hello-world type spring/drools setup. The issue is no rules fire when in theory they should.
Decision Table:
Console output - server startup:
package com.example.drools;
//generated from Decision Table
import com.example.drools.TestRules;
// rule values at B9, header at B4
rule "_9"
when
$test:TestRules(number1 == 10)
then
$test.add("10");
end
Drools Config:
#Configuration
public class DroolsConfiguration
{
private final static String VALIDATION_RULES = "validation-rules.xls";
#Bean
public KieContainer validationRulesKieContainer() {
KieServices kieServices = KieServices.Factory.get();
Resource rules = ResourceFactory.newClassPathResource(VALIDATION_RULES);
compileXlsToDrl(rules);
KieFileSystem kieFileSystem = kieServices.newKieFileSystem().write(rules);
KieBuilder kieBuilder = kieServices.newKieBuilder(kieFileSystem);
KieBuilder builder = kieBuilder.buildAll();
KieModule kieModule = kieBuilder.getKieModule();
return kieServices.newKieContainer(kieModule.getReleaseId());
}
private static void compileXlsToDrl(Resource resource) {
try {
InputStream is = resource.getInputStream();
SpreadsheetCompiler compiler = new SpreadsheetCompiler();
String drl = compiler.compile(is, InputType.XLS);
System.out.println(drl);
} catch (Exception e) {
e.printStackTrace();
}
}
}
Service:
#Service
public class ValidationRulesEngine
{
#Autowired
#Qualifier("validationRulesKieContainer")
private KieContainer validationKieContainer;
public void validate() {
KieSession kieSession = validationKieContainer.newKieSession();
kieSession.addEventListener(new DebugAgendaEventListener());
kieSession.addEventListener(new DebugRuleRuntimeEventListener());
TestRules tr = new TestRules(10, 20, 30);
kieSession.insert(tr);
int noOfRulesFired = kieSession.fireAllRules();
System.out.println("noOfRulesFired: " + noOfRulesFired);
System.out.println(tr);
System.out.println(tr.getRule());
}
}
TestRule - Fact:
public class TestRules
{
public int number1;
public int number2;
public int number3;
public List<String> rules = new ArrayList<String>();
public TestRules() {}
public TestRules(int number1, int number2, int number3)
{
super();
this.number1 = number1;
this.number2 = number2;
this.number3 = number3;
}
public void add(String rule) {
rules.add(rule);
}
public String getRule() {
return this.rules.size() > 0 ? this.rules.get(0) : "";
}
#Override
public String toString()
{
return "TestRules [number1=" + number1 + ", number2=" + number2 + ", number3=" + number3 + ", rules=" +
rules.stream().map(s -> s.toString()).collect(Collectors.joining(",")) + "]";
}
}
Console output - result:
2021-07-20 17:02:27.549 ERROR 20212 --- [nio-9016-exec-1] c.g.i.e.p.c.OfficeController : --> Rules Engine
==>[ObjectInsertedEventImpl: getFactHandle()=[fact 0:1:1539328290:1539328290:1:DEFAULT:NON_TRAIT:com.example.drools.TestRules:TestRules [number1=10, number2=20, number3=30, rules=]], getObject()=TestRules [number1=10, number2=20, number3=30, rules=], getKnowledgeRuntime()=KieSession[0], getPropagationContext()=PhreakPropagationContext [entryPoint=EntryPoint::DEFAULT, factHandle=[fact 0:1:1539328290:1539328290:1:DEFAULT:NON_TRAIT:com.example.drools.TestRules:TestRules [number1=10, number2=20, number3=30, rules=]], leftTuple=null, originOffset=-1, propagationNumber=2, rule=null, type=INSERTION]]
noOfRulesFired: 0
TestRules [number1=10, number2=20, number3=30, rules=]
2021-07-20 17:02:28.454 ERROR 20212 --- [nio-9016-exec-1] c.g.i.e.p.c.OfficeController : <-- Rules Engine
What am I missing?

Answer 1

This is no good:
$test:TestRules($test.number1 == 10, $test.number2 == 20)
You can't refer to $test before you declare it. The correct syntax is:
$test: TestRules( number1 == 10, number2 == 20 )
Fix your decision table from $test.number1 == $param to instead be number1 == $param. (And do the same for number2 adjacent.)
The rest looks fine, though I would suggest using a try-with-resources instead of a try-catch in your XLSX parsing method.