Drools Code

Project Structure for Lab-1

To String()

@Override
public String toString() {
    return "Product{type='" + type + "', price=" + price + ", available=" + available + '}';

Person.java

public class Person { private String name; private int age; private boolean hasBirthdayPassed;

public Person(String name, int age, boolean hasBirthdayPassed) {
    this.name = name;
    this.age = age;
    this.hasBirthdayPassed = hasBirthdayPassed;
}

public String getName() {
    return name;
}

public void setName(String name) {
    this.name = name;
}

public int getAge() {
    return age;
}

public void setAge(int age) {
    this.age = age;
}

public boolean isHasBirthdayPassed() {
    return hasBirthdayPassed;
}

public void setHasBirthdayPassed(boolean hasBirthdayPassed) {
    this.hasBirthdayPassed = hasBirthdayPassed;
}

@Override
public String toString() {
    return "Person{name='" + name + "', age=" + age + ", hasBirthdayPassed=" + hasBirthdayPassed + "}";
}

}

BirthdayRules.java

public class BirthdayRule { private String message;

public BirthdayRule(String message) {
    this.message = message;
}

public String getMessage() {
    return message;
}

public void setMessage(String message) {
    this.message = message;
}

@Override
public String toString() {
    return "BirthdayRule{message='" + message + "'}";
}

}

birthdayRules.drl

package com.example.rules; import com.example.model.Person; import com.example.model.BirthdayRule;

rule "Person has Birthday" when $person : Person(age > 18, hasBirthdayPassed == false) then $person.setHasBirthdayPassed(true); insert(new BirthdayRule($person.getName() + " has a birthday today!")); System.out.println($person.getName() + " has a birthday today."); end

rule "Birthday Message" when $rule : BirthdayRule(message != null) then System.out.println($rule.getMessage()); end