Examples with PrintToStringSubscriber reactivestreams.helpers.SubscriberHelpers.PrintToStringSubscriber used on opensource projects

Example 1 with PrintToStringSubscriber

use of reactivestreams.helpers.SubscriberHelpers.PrintToStringSubscriber in project mongo-java-driver by mongodb.

the class PojoQuickTour method main.

/**
 * Run this main method to see the output of this quick example.
 *
 * @param args takes an optional single argument for the connection string
 */
public static void main(final String[] args) {
    MongoClient mongoClient;
    if (args.length == 0) {
        // connect to the local database server
        mongoClient = MongoClients.create();
    } else {
        mongoClient = MongoClients.create(args[0]);
    }
    // create codec registry for POJOs
    CodecRegistry pojoCodecRegistry = fromRegistries(MongoClients.getDefaultCodecRegistry(), fromProviders(PojoCodecProvider.builder().automatic(true).build()));
    // get handle to "mydb" database
    MongoDatabase database = mongoClient.getDatabase("mydb").withCodecRegistry(pojoCodecRegistry);
    // get a handle to the "people" collection
    final MongoCollection<Person> collection = database.getCollection("people", Person.class);
    // drop all the data in it
    ObservableSubscriber<Void> successSubscriber = new OperationSubscriber<>();
    collection.drop().subscribe(successSubscriber);
    successSubscriber.await();
    // make a document and insert it
    final Person ada = new Person("Ada Byron", 20, new Address("St James Square", "London", "W1"));
    System.out.println("Original Person Model: " + ada);
    ObservableSubscriber<InsertOneResult> insertOneSubscriber = new OperationSubscriber<>();
    collection.insertOne(ada).subscribe(insertOneSubscriber);
    insertOneSubscriber.await();
    // get it (since it's the only one in there since we dropped the rest earlier on)
    ObservableSubscriber<Person> personSubscriber = new PrintToStringSubscriber<>();
    collection.find().first().subscribe(personSubscriber);
    personSubscriber.await();
    // now, lets add some more people so we can explore queries and cursors
    List<Person> people = asList(new Person("Charles Babbage", 45, new Address("5 Devonshire Street", "London", "W11")), new Person("Alan Turing", 28, new Address("Bletchley Hall", "Bletchley Park", "MK12")), new Person("Timothy Berners-Lee", 61, new Address("Colehill", "Wimborne", null)));
    ObservableSubscriber<InsertManyResult> insertManySubscriber = new OperationSubscriber<>();
    collection.insertMany(people).subscribe(insertManySubscriber);
    insertManySubscriber.await();
    // get all the documents in the collection and print them out
    personSubscriber = new PrintToStringSubscriber<>();
    collection.find().subscribe(personSubscriber);
    personSubscriber.await();
    // now use a query to get 1 document out
    personSubscriber = new PrintToStringSubscriber<>();
    collection.find(eq("address.city", "Wimborne")).first().subscribe(personSubscriber);
    personSubscriber.await();
    // now lets find every over 30
    personSubscriber = new PrintToStringSubscriber<>();
    collection.find(gt("age", 30)).subscribe(personSubscriber);
    personSubscriber.await();
    // Update One
    ObservableSubscriber<UpdateResult> updateSubscriber = new OperationSubscriber<>();
    collection.updateOne(eq("name", "Ada Byron"), combine(set("age", 23), set("name", "Ada Lovelace"))).subscribe(updateSubscriber);
    updateSubscriber.await();
    // Update Many
    updateSubscriber = new OperationSubscriber<>();
    collection.updateMany(not(eq("zip", null)), set("zip", null)).subscribe(updateSubscriber);
    updateSubscriber.await();
    // Replace One
    updateSubscriber = new OperationSubscriber<>();
    collection.replaceOne(eq("name", "Ada Lovelace"), ada).subscribe(updateSubscriber);
    updateSubscriber.await();
    // Delete One
    ObservableSubscriber<DeleteResult> deleteSubscriber = new OperationSubscriber<>();
    collection.deleteOne(eq("address.city", "Wimborne")).subscribe(deleteSubscriber);
    deleteSubscriber.await();
    // Delete Many
    deleteSubscriber = new OperationSubscriber<>();
    collection.deleteMany(eq("address.city", "London")).subscribe(deleteSubscriber);
    deleteSubscriber.await();
    // Clean up
    successSubscriber = new OperationSubscriber<>();
    database.drop().subscribe(successSubscriber);
    successSubscriber.await();
    // release resources
    mongoClient.close();
}