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

Example 16 with Variable

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

the class FlowTest method testNamedConsequence.

@Test
public void testNamedConsequence() {
    Variable<Result> resultV = declarationOf(Result.class);
    Variable<Person> markV = declarationOf(Person.class);
    Variable<Person> olderV = declarationOf(Person.class);
    Rule rule = rule("beta").build(expr("exprA", markV, p -> p.getName().equals("Mark")).indexedBy(String.class, ConstraintType.EQUAL, 1, Person::getName, "Mark").reactOn("name", // also react on age, see RuleDescr.lookAheadFieldsOfIdentifier
    "age"), on(markV, resultV).execute((p, r) -> r.addValue("Found " + p.getName())), expr("exprB", olderV, p -> !p.getName().equals("Mark")).indexedBy(String.class, ConstraintType.NOT_EQUAL, 1, Person::getName, "Mark").reactOn("name"), expr("exprC", olderV, markV, (p1, p2) -> p1.getAge() > p2.getAge()).indexedBy(int.class, ConstraintType.GREATER_THAN, 0, Person::getAge, Person::getAge).reactOn("age"), on(olderV, markV, resultV).execute((p1, p2, r) -> r.addValue(p1.getName() + " is older than " + p2.getName())));
    Model model = new ModelImpl().addRule(rule);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    Result result = new Result();
    ksession.insert(result);
    ksession.insert(new Person("Mark", 37));
    ksession.insert(new Person("Edson", 35));
    ksession.insert(new Person("Mario", 40));
    ksession.fireAllRules();
    Collection<String> results = (Collection<String>) result.getValue();
    assertEquals(2, results.size());
    assertTrue(results.containsAll(asList("Found Mark", "Mario is older than Mark")));
}

Example 17 with Variable

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

the class FlowTest method testFromGlobal.

@Test
public void testFromGlobal() throws Exception {
    // global java.util.List list
    // rule R when
    // $o : String(length > 3) from list
    // then
    // insert($o);
    // end
    final Global<List> var_list = globalOf(List.class, "defaultpkg", "list");
    final Variable<String> var_$o = declarationOf(String.class, "$o", // cannot use Function.identity() here because target type is ?.
    from(var_list, x -> x));
    Rule rule = rule("R").build(expr("$expr$1$", var_$o, (_this) -> _this.length() > 3).indexedBy(int.class, org.drools.model.Index.ConstraintType.GREATER_THAN, 0, _this -> _this.length(), 3).reactOn("length"), on(var_$o).execute((drools, $o) -> {
        drools.insert($o);
    }));
    Model model = new ModelImpl().addGlobal(var_list).addRule(rule);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    List<String> messages = Arrays.asList("a", "Hello World!", "b");
    ksession.setGlobal("list", messages);
    ksession.fireAllRules();
    List<String> results = getObjectsIntoList(ksession, String.class);
    assertFalse(results.contains("a"));
    assertTrue(results.contains("Hello World!"));
    assertFalse(results.contains("b"));
}

Example 18 with Variable

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

the class FlowTest method testQueryInRule.

@Test
public void testQueryInRule() {
    Variable<Person> personV = declarationOf(Person.class);
    Query2Def<Person, Integer> qdef = query("olderThan", Person.class, Integer.class);
    Query query = qdef.build(expr("exprA", qdef.getArg1(), qdef.getArg2(), (p, a) -> p.getAge() > a));
    Variable<Person> personVRule = declarationOf(Person.class);
    Rule rule = rule("R").build(qdef.call(personVRule, valueOf(40)), on(personVRule).execute((drools, p) -> drools.insert(new Result(p.getName()))));
    Model model = new ModelImpl().addQuery(query).addRule(rule);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    ksession.insert(new Person("Mark", 39));
    ksession.insert(new Person("Mario", 41));
    ksession.fireAllRules();
    Collection<Result> results = (Collection<Result>) ksession.getObjects(new ClassObjectFilter(Result.class));
    assertEquals(1, results.size());
    assertEquals("Mario", results.iterator().next().getValue());
}

Example 19 with Variable

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

the class FlowTest method testGlobalInConsequence.

@Test
public void testGlobalInConsequence() {
    Variable<Person> markV = declarationOf(Person.class);
    Global<Result> resultG = globalOf(Result.class, "org.mypkg");
    Rule rule = rule("org.mypkg", "global").build(expr("exprA", markV, p -> p.getName().equals("Mark")).indexedBy(String.class, ConstraintType.EQUAL, 0, Person::getName, "Mark").reactOn("name"), on(markV, resultG).execute((p, r) -> r.setValue(p.getName() + " is " + p.getAge())));
    Model model = new ModelImpl().addRule(rule).addGlobal(resultG);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    Result result = new Result();
    ksession.setGlobal(resultG.getName(), result);
    Person mark = new Person("Mark", 37);
    Person edson = new Person("Edson", 35);
    Person mario = new Person("Mario", 40);
    ksession.insert(mark);
    ksession.insert(edson);
    ksession.insert(mario);
    ksession.fireAllRules();
    assertEquals("Mark is 37", result.getValue());
}

Example 20 with Variable

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

the class FlowTest method testAccumuluateWithAnd2.

@Test
public void testAccumuluateWithAnd2() {
    Variable<Object> var_$pattern_Object$1$ = declarationOf(Object.class, "$pattern_Object$1$");
    Variable<Child> var_$c = declarationOf(Child.class, "$c");
    Variable<Adult> var_$a = declarationOf(Adult.class, "$a");
    Variable<Integer> var_$parentAge = declarationOf(Integer.class, "$parentAge");
    Variable<Integer> var_$expr$5$ = declarationOf(Integer.class, "$expr$5$");
    org.drools.model.Rule rule = rule("R").build(bind(var_$expr$5$).as(var_$a, var_$c, ($a, $c) -> $a.getAge() + $c.getAge()), accumulate(and(expr("$expr$1$", var_$c, (_this) -> _this.getAge() < 10).indexedBy(int.class, org.drools.model.Index.ConstraintType.LESS_THAN, 0, _this -> _this.getAge(), 10).reactOn("age"), expr("$expr$2$", var_$a, var_$c, (_this, $c) -> _this.getName().equals($c.getParent())).reactOn("name")), accFunction(org.drools.core.base.accumulators.IntegerSumAccumulateFunction.class, var_$expr$5$).as(var_$parentAge)), on(var_$parentAge).execute((drools, $parentAge) -> {
        drools.insert(new Result($parentAge));
    }));
    Model model = new ModelImpl().addRule(rule);
    KieBase kieBase = KieBaseBuilder.createKieBaseFromModel(model);
    KieSession ksession = kieBase.newKieSession();
    Adult a = new Adult("Mario", 43);
    Child c = new Child("Sofia", 6, "Mario");
    ksession.insert(a);
    ksession.insert(c);
    ksession.fireAllRules();
    Collection<Result> results = getObjectsIntoList(ksession, Result.class);
    assertThat(results, hasItem(new Result(49)));
}