//
//
// Data points
//
public void saveDataPoint(DataPointVO point) {
stopDataPoint(point.getId());
// Since the point's data type may have changed, we must ensure that the other attrtibutes are
// still ok with
// it.
int dataType = point.getPointLocator().getDataTypeId();
// Chart renderer
if (point.getChartRenderer() != null && !point.getChartRenderer().getDef().supports(dataType))
// Return to a default renderer
point.setChartRenderer(null);
// Text renderer
if (point.getTextRenderer() != null && !point.getTextRenderer().getDef().supports(dataType))
// Return to a default renderer
point.defaultTextRenderer();
// Event detectors
Iterator<PointEventDetectorVO> peds = point.getEventDetectors().iterator();
while (peds.hasNext()) {
PointEventDetectorVO ped = peds.next();
if (!ped.getDef().supports(dataType))
// Remove the detector.
peds.remove();
}
new DataPointDao().saveDataPoint(point);
if (point.isEnabled()) startDataPoint(point);
}
private void startDataPoint(DataPointVO vo) {
synchronized (dataPoints) {
Assert.isTrue(vo.isEnabled());
// Only add the data point if its data source is enabled.
DataSourceRT ds = getRunningDataSource(vo.getDataSourceId());
if (ds != null) {
// Change the VO into a data point implementation.
DataPointRT dataPoint = new DataPointRT(vo, vo.getPointLocator().createRuntime());
// Add/update it in the data image.
dataPoints.put(dataPoint.getId(), dataPoint);
// Initialize it.
dataPoint.initialize();
DataPointListener l = getDataPointListeners(vo.getId());
if (l != null) l.pointInitialized();
// Add/update it in the data source.
ds.addDataPoint(dataPoint);
}
}
}
@Override
public int getDataTypeId() {
return vo.getPointLocator().getDataTypeId();
}
private void savePointValue(
PointValueTime newValue, SetPointSource source, boolean async, boolean saveToDatabase) {
// Null values are not very nice, and since they don't have a specific meaning they are hereby
// ignored.
if (newValue == null) return;
// Check the data type of the value against that of the locator, just for fun.
int valueDataType = DataTypes.getDataType(newValue.getValue());
if (valueDataType != DataTypes.UNKNOWN && valueDataType != vo.getPointLocator().getDataTypeId())
// This should never happen, but if it does it can have serious downstream consequences. Also,
// we need
// to know how it happened, and the stack trace here provides the best information.
throw new ShouldNeverHappenException(
"Data type mismatch between new value and point locator: newValue="
+ DataTypes.getDataType(newValue.getValue())
+ ", locator="
+ vo.getPointLocator().getDataTypeId());
// Check if this value qualifies for discardation.
if (vo.isDiscardExtremeValues()
&& DataTypes.getDataType(newValue.getValue()) == DataTypes.NUMERIC) {
double newd = newValue.getDoubleValue();
if (newd < vo.getDiscardLowLimit() || newd > vo.getDiscardHighLimit())
// Discard the value
return;
}
if (newValue.getTime() > System.currentTimeMillis() + SystemSettingsDao.getFutureDateLimit()) {
// Too far future dated. Toss it. But log a message first.
LOG.warn(
"Future dated value detected: pointId="
+ vo.getId()
+ ", value="
+ newValue.getStringValue()
+ ", type="
+ vo.getPointLocator().getDataTypeId()
+ ", ts="
+ newValue.getTime(),
new Exception());
return;
}
boolean backdated = pointValue != null && newValue.getTime() < pointValue.getTime();
// Determine whether the new value qualifies for logging.
boolean logValue;
// ... or even saving in the cache.
boolean saveValue = true;
switch (vo.getLoggingType()) {
case DataPointVO.LoggingTypes.ON_CHANGE:
if (pointValue == null) logValue = true;
else if (backdated)
// Backdated. Ignore it
logValue = false;
else {
if (newValue.getValue() instanceof NumericValue) {
// Get the new double
double newd = newValue.getDoubleValue();
// See if the new value is outside of the tolerance.
double diff = toleranceOrigin - newd;
if (diff < 0) diff = -diff;
if (diff > vo.getTolerance()) {
toleranceOrigin = newd;
logValue = true;
} else logValue = false;
} else logValue = !ObjectUtils.equals(newValue.getValue(), pointValue.getValue());
}
saveValue = logValue;
break;
case DataPointVO.LoggingTypes.ALL:
logValue = true;
break;
case DataPointVO.LoggingTypes.ON_TS_CHANGE:
if (pointValue == null) logValue = true;
else if (backdated)
// Backdated. Ignore it
logValue = false;
else logValue = newValue.getTime() != pointValue.getTime();
saveValue = logValue;
break;
case DataPointVO.LoggingTypes.INTERVAL:
if (!backdated) intervalSave(newValue);
default:
logValue = false;
}
if (!saveToDatabase) logValue = false;
if (saveValue) valueCache.savePointValue(newValue, source, logValue, async);
// add annotation to newValue before firing events so event detectors can
// fetch the annotation
if (source != null) {
newValue =
new AnnotatedPointValueTime(
newValue.getValue(), newValue.getTime(), source.getSetPointSourceMessage());
}
// Ignore historical values.
if (pointValue == null || newValue.getTime() >= pointValue.getTime()) {
PointValueTime oldValue = pointValue;
pointValue = newValue;
fireEvents(oldValue, newValue, source != null, false);
} else fireEvents(null, newValue, false, true);
}
