Examples with Nullable javax.annotation.Nullable used on opensource projects

Example 86 with Nullable

use of javax.annotation.Nullable in project pinot by linkedin.

the class SegmentDirectoryPaths method findFormatFile.

@Nullable
private static File findFormatFile(@Nonnull File indexDir, String fileName) {
    Preconditions.checkNotNull(indexDir);
    Preconditions.checkArgument(indexDir.exists(), "Path %s does not exist", indexDir);
    if (!indexDir.isDirectory()) {
        return indexDir;
    }
    File v1File = new File(indexDir, fileName);
    if (v1File.exists()) {
        return v1File;
    }
    File v3Dir = segmentDirectoryFor(indexDir, SegmentVersion.v3);
    File v3File = new File(v3Dir, fileName);
    if (v3File.exists()) {
        return v3File;
    }
    return null;
}

Example 87 with Nullable

use of javax.annotation.Nullable in project presto by prestodb.

the class QueryStateMachine method transitionToFinishing.

public boolean transitionToFinishing() {
    Duration durationSinceCreation = nanosSince(createNanos).convertToMostSuccinctTimeUnit();
    queuedTime.compareAndSet(null, durationSinceCreation);
    totalPlanningStartNanos.compareAndSet(null, tickerNanos());
    totalPlanningTime.compareAndSet(null, nanosSince(totalPlanningStartNanos.get()));
    DateTime now = DateTime.now();
    executionStartTime.compareAndSet(null, now);
    finishingStartNanos.compareAndSet(null, tickerNanos());
    if (!queryState.setIf(FINISHING, currentState -> currentState != FINISHING && !currentState.isDone())) {
        return false;
    }
    if (autoCommit) {
        ListenableFuture<?> commitFuture = transactionManager.asyncCommit(session.getTransactionId().get());
        Futures.addCallback(commitFuture, new FutureCallback<Object>() {

            @Override
            public void onSuccess(@Nullable Object result) {
                transitionToFinished();
            }

            @Override
            public void onFailure(Throwable throwable) {
                transitionToFailed(throwable);
            }
        });
    } else {
        transitionToFinished();
    }
    return true;
}

Example 88 with Nullable

use of javax.annotation.Nullable in project presto by prestodb.

the class ExchangeClient method getNextPage.

@Nullable
public SerializedPage getNextPage(Duration maxWaitTime) throws InterruptedException {
    checkState(!Thread.holdsLock(this), "Can not get next page while holding a lock on this");
    throwIfFailed();
    if (closed.get()) {
        return null;
    }
    scheduleRequestIfNecessary();
    SerializedPage page = pageBuffer.poll();
    // only wait for a page if we have remote clients
    if (page == null && maxWaitTime.toMillis() >= 1 && !allClients.isEmpty()) {
        page = pageBuffer.poll(maxWaitTime.toMillis(), TimeUnit.MILLISECONDS);
    }
    return postProcessPage(page);
}

Example 89 with Nullable

use of javax.annotation.Nullable in project querydsl by querydsl.

the class AbstractSQLQuery method fetchOne.

@SuppressWarnings("unchecked")
@Override
@Nullable
public T fetchOne() {
    if (getMetadata().getModifiers().getLimit() == null) {
        limit(2);
    }
    Query query = createQuery(false);
    Object rv = execute(query, false);
    if (rv instanceof List) {
        List<?> list = (List<?>) rv;
        if (!list.isEmpty()) {
            if (list.size() > 1) {
                throw new NonUniqueResultException();
            }
            return (T) list.get(0);
        } else {
            return null;
        }
    } else {
        return (T) rv;
    }
}

Example 90 with Nullable

use of javax.annotation.Nullable in project querydsl by querydsl.

the class GeoDBWkbType method getValue.

@Override
@Nullable
public Geometry getValue(ResultSet rs, int startIndex) throws SQLException {
    byte[] bytes = rs.getBytes(startIndex);
    if (bytes != null) {
        byte[] wkb;
        if (bytes[0] != 0 && bytes[0] != 1) {
            // decodes EWKB
            wkb = new byte[bytes.length - 32];
            System.arraycopy(bytes, 32, wkb, 0, wkb.length);
        } else {
            wkb = bytes;
        }
        WkbDecoder decoder = Wkb.newDecoder(Wkb.Dialect.POSTGIS_EWKB_1);
        return decoder.decode(ByteBuffer.from(wkb));
    } else {
        return null;
    }
}