Examples with WatchEvent org.immutables.criteria.backend.WatchEvent used on opensource projects

Example 1 with WatchEvent

use of org.immutables.criteria.backend.WatchEvent in project immutables by immutables.

the class MongoSession method watch.

private <X> Publisher<WatchEvent<X>> watch(StandardOperations.Watch operation) {
    final MongoCollection<X> collection = (MongoCollection<X>) this.collection;
    if (operation.query().hasProjections()) {
        return Flowable.error(new UnsupportedOperationException("Projections are not yet supported with watch operation"));
    }
    ChangeStreamPublisher<X> watch;
    if (!operation.query().filter().isPresent()) {
        // watch without filter
        watch = collection.watch(collection.getDocumentClass());
    } else {
        // prefix all attributes with 'fullDocument.'
        PathNaming naming = path -> "fullDocument." + this.pathNaming.name(path);
        // reuse aggregation pipeline
        AggregationQuery agg = new AggregationQuery(operation.query(), naming);
        watch = collection.watch(agg.toPipeline(), collection.getDocumentClass());
    }
    return Flowable.fromPublisher(watch.fullDocument(FullDocument.UPDATE_LOOKUP)).map(MongoWatchEvent::fromChangeStream);
}

Example 2 with WatchEvent

use of org.immutables.criteria.backend.WatchEvent in project immutables by immutables.

the class ChangeStreamsTest method filter.

/**
 * Watch event with filter
 */
@Test
void filter() throws InterruptedException {
    PersonCriteria filter = person.age.atLeast(21);
    Flowable<WatchEvent<Person>> flowable = Flowable.fromPublisher(repository.watcher(filter).watch());
    TestSubscriber<WatchEvent<Person>> test = flowable.test();
    repository.insert(generator.next().withId("id1").withAge(18));
    test.await(200, TimeUnit.MILLISECONDS);
    test.assertEmpty();
    repository.insert(generator.next().withId("id2").withAge(19));
    test.await(200, TimeUnit.MILLISECONDS);
    test.assertEmpty();
    repository.insert(generator.next().withId("id3").withAge(21));
    test.awaitCount(1).assertValueCount(1);
    Person person = test.values().get(0).newValue().get();
    check(person.id()).is("id3");
    check(person.age()).is(21);
}

Example 3 with WatchEvent

use of org.immutables.criteria.backend.WatchEvent in project immutables by immutables.

the class GeodeCqTest method pubsub.

@Test
public void pubsub() throws Exception {
    PersonRepository repository = new PersonRepository(new GeodeBackend(GeodeSetup.of(x -> region)));
    TestSubscriber<WatchEvent<Person>> events = Flowable.fromPublisher(repository.watcher(PersonCriteria.person).watch()).test();
    final PersonGenerator generator = new PersonGenerator();
    final int count = 4;
    for (int i = 0; i < count; i++) {
        repository.insert(generator.next().withId("id" + i));
    }
    check(region.keySet()).notEmpty();
    // ensure (de)serialization is successful
    check(region.query("true")).hasSize(count);
    events.awaitCount(count);
    events.assertNoErrors();
    events.assertValueCount(count);
    check(events.values().stream().map(e -> e.newValue().get().id()).collect(Collectors.toList())).hasContentInAnyOrder("id0", "id1", "id2", "id3");
}

Example 4 with WatchEvent

use of org.immutables.criteria.backend.WatchEvent in project immutables by immutables.

the class ChangeStreamsTest method multiFilter.

@Test
void multiFilter() throws InterruptedException {
    PersonCriteria filter = person.age.atLeast(21).isActive.isTrue();
    Flowable<WatchEvent<Person>> flowable = Flowable.fromPublisher(repository.watcher(filter).watch());
    TestSubscriber<WatchEvent<Person>> test = flowable.test();
    repository.insert(generator.next().withId("id1").withAge(19));
    test.await(200, TimeUnit.MILLISECONDS);
    test.assertEmpty();
    repository.insert(generator.next().withId("id2").withAge(21).withIsActive(false));
    test.await(200, TimeUnit.MILLISECONDS);
    test.assertEmpty();
    repository.insert(generator.next().withId("id3").withAge(21).withIsActive(true));
    test.awaitCount(1).assertValueCount(1);
    Person person = test.values().get(0).newValue().get();
    check(person.id()).is("id3");
}