Examples with StreamingValue org.n52.shetland.ogc.om.StreamingValue used on opensource projects

Example 6 with StreamingValue

use of org.n52.shetland.ogc.om.StreamingValue in project arctic-sea by 52North.

the class WmlTVPEncoderv20XmlStreamWriter method writeResult.

@Override
protected void writeResult() throws XMLStreamException, EncodingException {
    start(OmConstants.QN_OM_20_RESULT);
    namespace(WaterMLConstants.NS_WML_20_PREFIX, WaterMLConstants.NS_WML_20);
    start(WaterMLConstants.QN_MEASUREMENT_TIMESERIES);
    OmObservation observation = getElement();
    attr(GmlConstants.QN_ID_32, "timeseries." + observation.getObservationID());
    writeMeasurementTimeseriesMetadata(observation);
    if (observation.getValue() instanceof SingleObservationValue) {
        SingleObservationValue<?> observationValue = (SingleObservationValue<?>) observation.getValue();
        writeDefaultPointMetadata(observationValue, observationValue.getValue().getUnit());
        String time = getTimeString(observationValue.getPhenomenonTime());
        writePoint(time, getValue(observation.getValue().getValue()));
        close();
    } else if (observation.getValue() instanceof MultiObservationValues) {
        // XML streaming to client
        MultiObservationValues<?> observationValue = (MultiObservationValues<?>) observation.getValue();
        writeDefaultPointMetadata(observationValue, observationValue.getValue().getUnit());
        TVPValue tvpValue = (TVPValue) observationValue.getValue();
        List<TimeValuePair> timeValuePairs = tvpValue.getValue();
        for (TimeValuePair timeValuePair : timeValuePairs) {
            if (timeValuePair != null) {
                writePoint(getTimeString(timeValuePair.getTime()), getValue(timeValuePair.getValue()));
            }
        }
        close();
    } else if (observation.getValue() instanceof StreamingValue) {
        // Database streaming + XML streaming to client
        StreamingValue<?> observationValue = (StreamingValue<?>) observation.getValue();
        if (observationValue.isSetUnit()) {
            writeDefaultPointMetadata(observationValue, observationValue.getUnit());
        } else if (observation.getObservationConstellation().getObservableProperty() instanceof OmObservableProperty && ((OmObservableProperty) observation.getObservationConstellation().getObservableProperty()).isSetUnit()) {
            writeDefaultPointMetadata(observationValue, ((OmObservableProperty) observation.getObservationConstellation().getObservableProperty()).getUnit());
        } else {
            writeDefaultPointMetadata(observationValue, null);
        }
        try {
            while (observationValue.hasNext()) {
                TimeValuePair timeValuePair = observationValue.nextValue();
                if (timeValuePair != null) {
                    writePoint(getTimeString(timeValuePair.getTime()), getValue(timeValuePair.getValue()));
                }
            }
        } catch (DateTimeFormatException | OwsExceptionReport e) {
            throw new EncodingException(e);
        }
        close();
    } else {
        super.writeResult();
    }
}