Examples with UnitConverter javax.measure.converter.UnitConverter used on opensource projects

Example 6 with UnitConverter

use of javax.measure.converter.UnitConverter in project ma-core-public by infiniteautomation.

the class ImageChartServlet method getImageData.

private byte[] getImageData(String imageInfo, HttpServletRequest request) throws IOException {
    // Hex colour definitions need to be prefixed with '0x' instead of '#'.
    try {
        // Remove the / and the .png
        imageInfo = imageInfo.substring(1, imageInfo.length() - 4);
        // Split by underscore.
        String[] imageBits = imageInfo.split("_");
        // Get the data.
        long from, to;
        int pointIdStart;
        if (imageBits[0].equals("ft")) {
            from = Long.parseLong(imageBits[2]);
            to = Long.parseLong(imageBits[3]);
            pointIdStart = 4;
        } else {
            from = Common.timer.currentTimeMillis() - Long.parseLong(imageBits[1]);
            to = -1;
            pointIdStart = 2;
        }
        int width = getIntRequestParameter(request, "w", 200);
        int height = getIntRequestParameter(request, "h", 100);
        String useCacheString = request.getParameter("useCache");
        boolean useCache = false;
        if (useCacheString != null && Boolean.valueOf(useCacheString))
            useCache = true;
        TimeZone timeZone = Common.getUserTimeZone(Common.getUser(request));
        // Create the datasets
        DataPointVO markerPoint = null;
        int pointCount = 0;
        PointTimeSeriesCollection ptsc = new PointTimeSeriesCollection(timeZone);
        for (int i = pointIdStart; i < imageBits.length; i++) {
            if (imageBits[i].startsWith("w"))
                width = NumberUtils.toInt(imageBits[i].substring(1), width);
            else if (imageBits[i].startsWith("h"))
                height = NumberUtils.toInt(imageBits[i].substring(1), height);
            else {
                String dataPointStr = imageBits[i];
                Color colour = null;
                int dataPointId;
                int pipe = dataPointStr.indexOf('|');
                if (pipe == -1)
                    dataPointId = Integer.parseInt(dataPointStr);
                else {
                    try {
                        String colourStr = dataPointStr.substring(pipe + 1);
                        if (colourStr.startsWith("0x"))
                            colourStr = "#" + colourStr.substring(2);
                        colour = ColorUtils.toColor(colourStr);
                    } catch (InvalidArgumentException e) {
                        throw new IOException(e);
                    }
                    dataPointId = Integer.parseInt(dataPointStr.substring(0, pipe));
                }
                // Get the data.
                DataPointVO dp = DataPointDao.instance.getDataPoint(dataPointId);
                if (dp != null && dp.getName() != null) {
                    pointCount++;
                    markerPoint = dp;
                    // Get the Color if there wasn't one provided
                    if (colour == null) {
                        try {
                            if (dp.getChartColour() != null)
                                colour = ColorUtils.toColor(dp.getChartColour());
                        } catch (InvalidArgumentException e) {
                        // Munch it
                        }
                    }
                    PointValueFacade pointValueFacade = new PointValueFacade(dataPointId, useCache);
                    List<PointValueTime> data;
                    if (from == -1 && to == -1)
                        data = pointValueFacade.getPointValuesBetween(0, Common.timer.currentTimeMillis(), true, true);
                    else if (from == -1)
                        data = pointValueFacade.getPointValuesBetween(0, to, true, true);
                    else if (to == -1)
                        data = pointValueFacade.getPointValuesBetween(from, Common.timer.currentTimeMillis(), true, true);
                    else
                        data = pointValueFacade.getPointValuesBetween(from, to, true, true);
                    if (dp.getPointLocator().getDataTypeId() == DataTypes.NUMERIC) {
                        TimeSeries ts;
                        if (dp.isUseRenderedUnit()) {
                            // This works because we enforce that all Units default to the ONE Unit if not used
                            UnitConverter converter = null;
                            if (dp.getRenderedUnit() != dp.getUnit())
                                converter = dp.getUnit().getConverterTo(dp.getRenderedUnit());
                            ts = new TimeSeries(dp.getExtendedName(), null, dp.getTextRenderer().getMetaText());
                            double value;
                            for (PointValueTime pv : data) {
                                if (pv.getValue() != null) {
                                    if (converter != null)
                                        value = converter.convert(pv.getDoubleValue());
                                    else
                                        value = pv.getDoubleValue();
                                    ImageChartUtils.addMillisecond(ts, pv.getTime(), value);
                                }
                            }
                        } else {
                            // No renderer, don't need it
                            ts = new TimeSeries(dp.getExtendedName(), null, dp.getTextRenderer().getMetaText());
                            for (PointValueTime pv : data) {
                                if (pv.getValue() != null)
                                    ImageChartUtils.addMillisecond(ts, pv.getTime(), pv.getValue().numberValue());
                            }
                        }
                        ptsc.addNumericTimeSeries(new NumericTimeSeries(dp.getPlotType(), ts, colour, null));
                    } else {
                        DiscreteTimeSeries ts = new DiscreteTimeSeries(dp.getExtendedName(), dp.getTextRenderer(), colour, null);
                        for (PointValueTime pv : data) if (pv.getValue() != null)
                            ts.addValueTime(pv);
                        ptsc.addDiscreteTimeSeries(ts);
                    }
                }
            }
        }
        if (pointCount == 1) {
            // Only one point. Check for limits to draw as markers.
            UnitConverter uc;
            if (markerPoint.getUnit() != null && markerPoint.getRenderedUnit() != null)
                uc = markerPoint.getUnit().getConverterTo(markerPoint.getRenderedUnit());
            else
                uc = Unit.ONE.getConverterTo(Unit.ONE);
            for (AbstractPointEventDetectorVO<?> ped : markerPoint.getEventDetectors()) {
                if (ped.getDefinition().getEventDetectorTypeName().equals(AnalogLowLimitEventDetectorDefinition.TYPE_NAME))
                    ptsc.addRangeMarker(new ValueMarker(uc.convert(((AnalogLowLimitDetectorVO) ped).getLimit()), lowLimitPaint, limitStroke));
                else if (ped.getDefinition().getEventDetectorTypeName().equals(AnalogHighLimitEventDetectorDefinition.TYPE_NAME))
                    ptsc.addRangeMarker(new ValueMarker(uc.convert(((AnalogHighLimitDetectorVO) ped).getLimit()), highLimitPaint, limitStroke));
            }
        }
        return ImageChartUtils.getChartData(ptsc, width, height, from, to);
    } catch (StringIndexOutOfBoundsException e) {
    // no op
    } catch (NumberFormatException e) {
    // no op
    } catch (ArrayIndexOutOfBoundsException e) {
    // no op
    }
    return null;
}