Examples with NO_ROW_FORMAT_COLUMN io.deephaven.web.client.api.subscription.ViewportData.NO_ROW_FORMAT_COLUMN used on opensource projects

Example 1 with NO_ROW_FORMAT_COLUMN

use of io.deephaven.web.client.api.subscription.ViewportData.NO_ROW_FORMAT_COLUMN in project deephaven-core by deephaven.

the class TableViewportSubscription method snapshot.

@JsMethod
public Promise<TableData> snapshot(JsRangeSet rows, Column[] columns) {
    // TODO #1039 slice rows and drop columns
    return copy.then(table -> {
        final ClientTableState state = table.state();
        String[] columnTypes = Arrays.stream(state.getTableDef().getColumns()).map(ColumnDefinition::getType).toArray(String[]::new);
        final BitSet columnBitset = table.lastVisibleState().makeBitset(columns);
        return Callbacks.<TableSnapshot, String>promise(this, callback -> {
            WorkerConnection connection = table.getConnection();
            BiDiStream<FlightData, FlightData> stream = connection.<FlightData, FlightData>streamFactory().create(headers -> connection.flightServiceClient().doExchange(headers), (first, headers) -> connection.browserFlightServiceClient().openDoExchange(first, headers), (next, headers, c) -> connection.browserFlightServiceClient().nextDoExchange(next, headers, c::apply), new FlightData());
            Builder doGetRequest = new Builder(1024);
            double columnsOffset = BarrageSubscriptionRequest.createColumnsVector(doGetRequest, makeUint8ArrayFromBitset(columnBitset));
            double viewportOffset = BarrageSubscriptionRequest.createViewportVector(doGetRequest, serializeRanges(Collections.singleton(rows.getRange())));
            double serializationOptionsOffset = BarrageSnapshotOptions.createBarrageSnapshotOptions(doGetRequest, ColumnConversionMode.Stringify, true, 0);
            double tableTicketOffset = BarrageSubscriptionRequest.createTicketVector(doGetRequest, state.getHandle().getTicket());
            BarrageSnapshotRequest.startBarrageSnapshotRequest(doGetRequest);
            BarrageSnapshotRequest.addTicket(doGetRequest, tableTicketOffset);
            BarrageSnapshotRequest.addColumns(doGetRequest, columnsOffset);
            BarrageSnapshotRequest.addSnapshotOptions(doGetRequest, serializationOptionsOffset);
            BarrageSnapshotRequest.addViewport(doGetRequest, viewportOffset);
            doGetRequest.finish(BarrageSnapshotRequest.endBarrageSnapshotRequest(doGetRequest));
            FlightData request = new FlightData();
            request.setAppMetadata(BarrageUtils.wrapMessage(doGetRequest, BarrageMessageType.BarrageSnapshotRequest));
            stream.send(request);
            stream.end();
            stream.onData(flightData -> {
                Message message = Message.getRootAsMessage(new ByteBuffer(flightData.getDataHeader_asU8()));
                if (message.headerType() == MessageHeader.Schema) {
                    // ignore for now, we'll handle this later
                    return;
                }
                assert message.headerType() == MessageHeader.RecordBatch;
                RecordBatch header = message.header(new RecordBatch());
                Uint8Array appMetadataBytes = flightData.getAppMetadata_asU8();
                BarrageUpdateMetadata update = null;
                if (appMetadataBytes.length != 0) {
                    BarrageMessageWrapper barrageMessageWrapper = BarrageMessageWrapper.getRootAsBarrageMessageWrapper(new io.deephaven.javascript.proto.dhinternal.flatbuffers.ByteBuffer(appMetadataBytes));
                    update = BarrageUpdateMetadata.getRootAsBarrageUpdateMetadata(new ByteBuffer(new Uint8Array(barrageMessageWrapper.msgPayloadArray())));
                }
                TableSnapshot snapshot = BarrageUtils.createSnapshot(header, BarrageUtils.typedArrayToLittleEndianByteBuffer(flightData.getDataBody_asU8()), update, true, columnTypes);
                callback.onSuccess(snapshot);
            });
            stream.onStatus(status -> {
                if (!status.isOk()) {
                    callback.onFailure(status.getDetails());
                }
            });
        }).then(defer()).then(snapshot -> {
            SubscriptionTableData pretendSubscription = new SubscriptionTableData(Js.uncheckedCast(columns), state.getRowFormatColumn() == null ? NO_ROW_FORMAT_COLUMN : state.getRowFormatColumn().getIndex(), null);
            TableData data = pretendSubscription.handleSnapshot(snapshot);
            return Promise.resolve(data);
        }).then(defer());
    });
}