Examples with KieSession org.kie.api.runtime.KieSession used on opensource projects

Example 1 with KieSession

use of org.kie.api.runtime.KieSession in project graylog2-server by Graylog2.

the class DroolsEngine method stop.

public void stop() {
    LOG.debug("Stopping drools session and removing all rules.");
    final KieSession activeSession = session.getAndSet(null);
    if (activeSession != null) {
        activeSession.dispose();
    }
    if (currentReleaseId != null) {
        kieServices.getRepository().removeKieModule(currentReleaseId);
    }
}

Example 2 with KieSession

use of org.kie.api.runtime.KieSession in project opennms by OpenNMS.

the class CorrelationExample method main.

/**
 * <p>main</p>
 *
 * @param args an array of {@link java.lang.String} objects.
 * @throws java.lang.Exception if any.
 */
public static void main(final String[] args) throws Exception {
    final KieSession session = new KieHelper().addResource(new ClassPathResource("CorrelationExample.drl")).build().newKieSession();
    KieRuntimeLogger logger = KieServices.Factory.get().getLoggers().newFileLogger(session, "log/correlation");
    try (InputStream in = CorrelationExample.class.getResourceAsStream("simulation")) {
        final Simulation simulation = new Simulation();
        System.out.println("Loading Simulation");
        simulation.load(in);
        System.out.println("Executing Simulation");
        simulation.simulate(session);
    }
    logger.close();
}

Example 3 with KieSession

use of org.kie.api.runtime.KieSession in project drools by kiegroup.

the class CompilerTest method testNullSafeDereferncing.

@Test
public void testNullSafeDereferncing() {
    String str = "import " + Result.class.getCanonicalName() + ";" + "import " + Person.class.getCanonicalName() + ";" + "rule R when\n" + "  $r : Result()\n" + "  $p : Person( name!.length == 4 )\n" + "then\n" + "  $r.setValue(\"Found: \" + $p);\n" + "end";
    KieSession ksession = getKieSession(str);
    Result result = new Result();
    ksession.insert(result);
    ksession.insert(new Person("Mark", 37));
    ksession.insert(new Person("Mario", 40));
    ksession.insert(new Person(null, 40));
    ksession.fireAllRules();
    assertEquals("Found: Mark", result.getValue());
}

Example 4 with KieSession

use of org.kie.api.runtime.KieSession in project drools by kiegroup.

the class CompilerTest method testNamedConsequence.

@Test
public void testNamedConsequence() {
    String str = "import " + Result.class.getCanonicalName() + ";\n" + "import " + Person.class.getCanonicalName() + ";\n" + "rule R when\n" + "  $r : Result()\n" + "  $p1 : Person(name == \"Mark\")\n" + "  do[FoundMark]\n" + "  $p2 : Person(name != \"Mark\", age > $p1.age)\n" + "then\n" + "  $r.addValue($p2.getName() + \" is older than \" + $p1.getName());\n" + "then[FoundMark]\n" + "  $r.addValue(\"Found \" + $p1.getName());\n" + "end";
    KieSession ksession = getKieSession(str);
    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 results = (Collection) result.getValue();
    assertEquals(2, results.size());
    assertTrue(results.containsAll(asList("Found Mark", "Mario is older than Mark")));
}

Example 5 with KieSession

use of org.kie.api.runtime.KieSession 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());
}