Examples with Rule org.drools.model.Rule used on opensource projects

Example 1 with Rule

use of org.drools.model.Rule in project drools by kiegroup.

the class FlowTest method testAccumulate1.

@Test
public void testAccumulate1() {
    Result result = new Result();
    Variable<Person> person = declarationOf(Person.class);
    Variable<Integer> resultSum = declarationOf(Integer.class);
    Variable<Integer> age = declarationOf(Integer.class);
    Rule rule = rule("accumulate").build(bind(age).as(person, Person::getAge), accumulate(expr(person, p -> p.getName().startsWith("M")), accFunction(org.drools.core.base.accumulators.IntegerSumAccumulateFunction.class, age).as(resultSum)), on(resultSum).execute(sum -> result.setValue("total = " + sum)));
    Model model = new ModelImpl().addRule(rule);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    ksession.insert(new Person("Mark", 37));
    ksession.insert(new Person("Edson", 35));
    ksession.insert(new Person("Mario", 40));
    ksession.fireAllRules();
    assertEquals("total = 77", result.getValue());
}

Example 2 with Rule

use of org.drools.model.Rule in project drools by kiegroup.

the class FlowTest method testForall.

@Test
public void testForall() {
    Variable<Person> p1V = declarationOf(Person.class);
    Variable<Person> p2V = declarationOf(Person.class);
    Rule rule = rule("not").build(forall(expr("exprA", p1V, p -> p.getName().length() == 5), expr("exprB", p2V, p1V, (p2, p1) -> p2 == p1), expr("exprC", p2V, p -> p.getAge() > 40)), execute(drools -> drools.insert(new Result("ok"))));
    Model model = new ModelImpl().addRule(rule);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    ksession.insert(new Person("Mario", 41));
    ksession.insert(new Person("Mark", 39));
    ksession.insert(new Person("Edson", 42));
    ksession.fireAllRules();
    Collection<Result> results = getObjectsIntoList(ksession, Result.class);
    assertEquals(1, results.size());
    assertEquals("ok", results.iterator().next().getValue());
}

Example 3 with Rule

use of org.drools.model.Rule in project drools by kiegroup.

the class FlowTest method testAccumulate2.

@Test
public void testAccumulate2() {
    Result result = new Result();
    Variable<Person> person = declarationOf(Person.class);
    Variable<Integer> resultSum = declarationOf(Integer.class);
    Variable<Double> resultAvg = declarationOf(Double.class);
    Variable<Integer> age = declarationOf(Integer.class);
    Rule rule = rule("accumulate").build(bind(age).as(person, Person::getAge), accumulate(expr(person, p -> p.getName().startsWith("M")), accFunction(org.drools.core.base.accumulators.IntegerSumAccumulateFunction.class, age).as(resultSum), accFunction(org.drools.core.base.accumulators.AverageAccumulateFunction.class, age).as(resultAvg)), on(resultSum, resultAvg).execute((sum, avg) -> result.setValue("total = " + sum + "; average = " + avg)));
    Model model = new ModelImpl().addRule(rule);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    ksession.insert(new Person("Mark", 37));
    ksession.insert(new Person("Edson", 35));
    ksession.insert(new Person("Mario", 40));
    ksession.fireAllRules();
    assertEquals("total = 77; average = 38.5", result.getValue());
}

Example 4 with Rule

use of org.drools.model.Rule in project drools by kiegroup.

the class FlowTest method testOrConditional.

@Test
public void testOrConditional() {
    final org.drools.model.Global<java.util.List> var_list = globalOf(java.util.List.class, "defaultpkg", "list");
    final Variable<Employee> var_$pattern_Employee$1$ = declarationOf(Employee.class, "$pattern_Employee$1$");
    final Variable<Address> var_$address = declarationOf(Address.class, "$address", reactiveFrom(var_$pattern_Employee$1$, (_this) -> _this.getAddress()));
    org.drools.model.Rule rule = rule("R").build(or(and(input(var_$pattern_Employee$1$), expr("$expr$2$", var_$address, (_this) -> org.drools.modelcompiler.util.EvaluationUtil.areNullSafeEquals(_this.getCity(), "Big City")).indexedBy(String.class, org.drools.model.Index.ConstraintType.EQUAL, 0, _this -> _this.getCity(), "Big City").reactOn("city")), and(input(var_$pattern_Employee$1$), expr("$expr$4$", var_$address, (_this) -> org.drools.modelcompiler.util.EvaluationUtil.areNullSafeEquals(_this.getCity(), "Small City")).indexedBy(String.class, org.drools.model.Index.ConstraintType.EQUAL, 0, _this -> _this.getCity(), "Small City").reactOn("city"))), on(var_$address, var_list).execute(($address, list) -> {
        list.add($address.getCity());
    }));
    Model model = new ModelImpl().addRule(rule).addGlobal(var_list);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession kieSession = kieBase.newKieSession();
    List<String> results = new ArrayList<>();
    kieSession.setGlobal("list", results);
    final Employee bruno = createEmployee("Bruno", new Address("Elm", 10, "Small City"));
    kieSession.insert(bruno);
    final Employee alice = createEmployee("Alice", new Address("Elm", 10, "Big City"));
    kieSession.insert(alice);
    kieSession.fireAllRules();
    Assertions.assertThat(results).containsExactlyInAnyOrder("Big City", "Small City");
}

Example 5 with Rule

use of org.drools.model.Rule in project drools by kiegroup.

the class FlowTest method testNot.

@Test
public void testNot() {
    Result result = new Result();
    Variable<Person> oldestV = declarationOf(Person.class);
    Variable<Person> otherV = declarationOf(Person.class);
    Rule rule = rule("not").build(not(otherV, oldestV, (p1, p2) -> p1.getAge() > p2.getAge()), on(oldestV).execute(p -> result.setValue("Oldest person is " + p.getName())));
    Model model = new ModelImpl().addRule(rule);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    ksession.insert(new Person("Mark", 37));
    ksession.insert(new Person("Edson", 35));
    ksession.insert(new Person("Mario", 40));
    ksession.fireAllRules();
    assertEquals("Oldest person is Mario", result.getValue());
}