Example usage for com.mongodb.async.client MongoIterable into

Introduction

In this page you can find the example usage for com.mongodb.async.client MongoIterable into.

Prototype

<A extends Collection<? super TResult>> void into(A target, SingleResultCallback<A> callback);

Source Link

Document

Iterates over all the documents, adding each to the given target.

Usage

From source file:com.supermy.im.mongo.MongoRepository.java

License:Apache License

/**
 *
 * @param collectionName/*w  ww . j a  v  a 2s  .c om*/
 * @return
 */
public boolean collectionExists(final String collectionName) {

    MongoIterable colls = mongoDatabase().listCollectionNames();

    List<String> collectionNames = new ArrayList<String>();

    try {
        final CountDownLatch countDownLatch = new CountDownLatch(1);//??

        colls.into(collectionNames, new SingleResultCallback<Void>() {
            @Override
            public void onResult(final Void result, final Throwable t) {
                // logger.debug("?");
                countDownLatch.countDown();
            }
        });
        countDownLatch.await(2, TimeUnit.SECONDS);
    } catch (InterruptedException e) {
        e.printStackTrace();
    }

    System.out.println(collectionNames);
    System.out.println(collectionNames.size());

    for (String name : collectionNames) {
        if (name.equalsIgnoreCase(collectionName)) {
            return true;
        }
    }
    return false;
}

---

From source file:io.vertx.ext.mongo.impl.MongoClientImpl.java

License:Open Source License

private void convertMongoIterable(MongoIterable iterable, Handler<AsyncResult<JsonArray>> resultHandler) {
    List results = new ArrayList();
    try {/*from   w w  w .  j av  a 2 s. co  m*/
        Context context = vertx.getOrCreateContext();
        iterable.into(results, (result, throwable) -> {
            context.runOnContext(v -> {
                if (throwable != null) {
                    resultHandler.handle(Future.failedFuture(throwable));
                } else {
                    resultHandler.handle(Future.succeededFuture(new JsonArray((List) result)));
                }
            });
        });
    } catch (Exception unhandledEx) {
        resultHandler.handle(Future.failedFuture(unhandledEx));
    }

}

---