import static com.google.common.base.Preconditions.checkNotNull;
import static com.google.common.base.Preconditions.checkState;
-import com.google.common.base.Function;
import com.google.common.base.Optional;
import com.google.common.collect.ImmutableMap;
import com.google.common.collect.Lists;
final YangInstanceIdentifier path) {
checkState(root != null,
"A modify operation (put, merge or delete) must be performed prior to an exists operation");
- return Futures.makeChecked(Futures.transform(read(store, path),
- (Function<Optional<NormalizedNode<?, ?>>, Boolean>)
- Optional::isPresent),
- ReadFailedException.MAPPER);
+ return Futures.makeChecked(Futures.transform(read(store, path), Optional::isPresent,
+ MoreExecutors.directExecutor()), ReadFailedException.MAPPER);
}
@Override