capture value from drools excel in java

Question

I have a java pojo class TestRule having variable ExpectedResultCode with appropriate getter and setter. I am using decision table drools

Now I want to access this set value of ExpectedResultCode in java.

Action: call setResultCode setter of the TestRule class and set the appropriate parameter from excel

TestRule.java-

public class TestRule {

    public String ExpectedResultCode;

    public String getResultCode() {
        return ExpectedResultCode;
    }

    public void setResultCode(String ExpectedResultCode) {
        this.ExpectedResultCode = ExpectedResultCode;
    }
}

Drools Code:

KieContainer kieContainer = kieServices
                        .newKieContainer(kieServices.getRepository()
                                .getDefaultReleaseId());

                kieSession = kieContainer.newKieSession();
                TestRule testrule = new TestRule();
                kieSession.insert(testrule);
                System.out.println("Output of Result Code:" + testrule.getResultCode());  --> I'm getting Null Value here.
kieSession.fireAllRules();

In decision table, I changed action to testrule.setResultCode($param)

I want to get "Result1" as output, but I'm getting Null value.

Answer 1

You display the object before firing the rules:

kieSession = kieContainer.newKieSession();
// create a TestRule object: ExpectedResultCode is null
TestRule testrule = new TestRule();
// insert the TestRule object: ExpectedResultCode is still null
kieSession.insert(testrule);
// display TestRule's ExpectedResultCode, which is still null
System.out.println("Output of Result Code:" + testrule.getResultCode());
// fire the rules
kieSession.fireAllRules();

Print the value after firing the rules:

// now the object TestRule's ExpectedResultCode should have changed.
System.out.println("Output of Result Code:" + testrule.getResultCode());