Example usage for com.google.common.util.concurrent Futures transform

Introduction

In this page you can find the example usage for com.google.common.util.concurrent Futures transform.

Prototype

public static <I, O> ListenableFuture<O> transform(ListenableFuture<I> input,
        Function<? super I, ? extends O> function)

Source Link

Document

Returns a new ListenableFuture whose result is the product of applying the given Function to the result of the given Future .

Usage

From source file:com.datastax.driver.mapping.Result.java

@Override
public ListenableFuture<Result<T>> fetchMoreResults() {
    return Futures.transform(rs.fetchMoreResults(), new Function<ResultSet, Result<T>>() {
        @Override//from www . ja  va 2 s .  c om
        public Result<T> apply(ResultSet rs) {
            return Result.this;
        }
    });
}

From source file:io.v.v23.syncbase.nosql.DatabaseImpl.java

@Override
public ListenableFuture<QueryResults> exec(VContext ctx, String query) {
    final ClientRecvStream<List<VdlAny>, Void> stream = client.exec(ctx, getSchemaVersion(), query);
    return Futures.transform(stream.recv(), new AsyncFunction<List<VdlAny>, QueryResults>() {
        @Override/*from   w w w  .j  a  va 2 s  . co m*/
        public ListenableFuture<QueryResults> apply(List<VdlAny> columnNames) throws Exception {
            return Futures.immediateFuture((QueryResults) new QueryResultsImpl(columnNames, stream));
        }
    });
}

From source file:org.opendaylight.mdsal.dom.broker.TransactionChainReadTransaction.java

@Override
public CheckedFuture<Boolean, ReadFailedException> exists(final LogicalDatastoreType store,
        final YangInstanceIdentifier path) {
    final Function<Optional<NormalizedNode<?, ?>>, Boolean> transform = optionalNode -> optionalNode.isPresent()
            ? Boolean.TRUE//from  ww  w  .jav a  2  s .  c  o  m
            : Boolean.FALSE;
    final ListenableFuture<Boolean> existsResult = Futures.transform(read(store, path), transform);
    return Futures.makeChecked(existsResult, ReadFailedException.MAPPER);
}

From source file:com.google.gapid.image.Images.java

public static ListenableFuture<ImageData> noAlpha(ListenableFuture<ImageData> image) {
    return Futures.transform(image, data -> {
        data.alphaData = null;//  www  .j av a 2s  .c  o m
        return data;
    });
}

From source file:io.crate.operation.count.InternalCountOperation.java

@Override
public ListenableFuture<Long> count(Map<String, ? extends Collection<Integer>> indexShardMap,
        final WhereClause whereClause) throws IOException, InterruptedException {

    List<Callable<Long>> callableList = new ArrayList<>();
    for (Map.Entry<String, ? extends Collection<Integer>> entry : indexShardMap.entrySet()) {
        final String index = entry.getKey();
        for (final Integer shardId : entry.getValue()) {
            callableList.add(new Callable<Long>() {
                @Override//  w  w  w.  jav  a  2s .  co m
                public Long call() throws Exception {
                    return count(index, shardId, whereClause);
                }
            });
        }
    }
    MergePartialCountFunction mergeFunction = new MergePartialCountFunction();
    ListenableFuture<List<Long>> listListenableFuture = ThreadPools.runWithAvailableThreads(executor,
            corePoolSize, callableList, mergeFunction);
    return Futures.transform(listListenableFuture, mergeFunction);
}

From source file:org.thingsboard.rule.engine.metadata.TbAbstractGetAttributesNode.java

private ListenableFuture<Void> putAttrAsync(TbContext ctx, EntityId entityId, TbMsg msg, String scope,
        List<String> keys, String prefix) {
    if (CollectionUtils.isEmpty(keys)) {
        return Futures.immediateFuture(null);
    }//from   ww w  .j  a va 2  s  .  c  o m
    ListenableFuture<List<AttributeKvEntry>> latest = ctx.getAttributesService().find(ctx.getTenantId(),
            entityId, scope, keys);
    return Futures.transform(latest, l -> {
        l.forEach(r -> {
            if (r.getValue() != null) {
                msg.getMetaData().putValue(prefix + r.getKey(), r.getValueAsString());
            } else {
                throw new RuntimeException(
                        "[" + scope + "][" + r.getKey() + "] attribute value is not present in the DB!");
            }
        });
        return null;
    });
}

From source file:org.opendaylight.bgpcep.pcep.topology.provider.TopologyRPCs.java

@Override
public Future<RpcResult<TriggerSyncOutput>> triggerSync(final TriggerSyncInput input) {
    return Futures.transform(manager.triggerSync(input),
            new Function<OperationResult, RpcResult<TriggerSyncOutput>>() {
                @Override//  w  ww.  j  a  v  a2  s. c  om
                public RpcResult<TriggerSyncOutput> apply(final OperationResult input) {
                    return SuccessfulRpcResult.create(new TriggerSyncOutputBuilder(input).build());
                }
            });
}

From source file:org.thingsboard.server.dao.alarm.AlarmDaoImpl.java

@Override
public ListenableFuture<Alarm> findAlarmByIdAsync(UUID key) {
    log.debug("Get alarm by id {}", key);
    Select.Where query = select().from(ALARM_BY_ID_VIEW_NAME).where(eq(ModelConstants.ID_PROPERTY, key));
    query.limit(1);/*w ww. j  a va2  s.c  o  m*/
    log.trace("Execute query {}", query);
    return Futures.transform(findOneByStatementAsync(query), toDataFunction());
}

From source file:co.cask.cdap.explore.client.AbstractExploreClient.java

@Override
public ListenableFuture<Void> disableExploreDataset(final Id.DatasetInstance datasetInstance) {
    ListenableFuture<ExploreExecutionResult> futureResults = getResultsFuture(new HandleProducer() {
        @Override//from   w w w. j  av  a  2 s  .com
        public QueryHandle getHandle() throws ExploreException, SQLException {
            return doDisableExploreDataset(datasetInstance);
        }
    });

    // Exceptions will be thrown in case of an error in the futureHandle
    return Futures.transform(futureResults, Functions.<Void>constant(null));
}

From source file:com.yahoo.yqlplus.engine.internal.java.sequences.Sequences.java

public static <ROW> ListenableFuture<List<ROW>> singletonTransformFuture(ListenableFuture<ROW> row) {
    return Futures.transform(row, new Function<ROW, List<ROW>>() {
        @Nullable//from   w w w. jav  a2  s  .  c  o m
        @Override
        public List<ROW> apply(@Nullable ROW input) {
            return singletonTransform(input);
        }
    });
}