private void stopDataPoint(int dataPointId) {
synchronized (dataPoints) {
// Remove this point from the data image if it is there. If not, just quit.
DataPointRT p = dataPoints.remove(dataPointId);
// Remove it from the data source, and terminate it.
if (p != null) {
getRunningDataSource(p.getDataSourceId()).removeDataPoint(p);
DataPointListener l = getDataPointListeners(dataPointId);
if (l != null) l.pointTerminated();
p.terminate();
}
}
}
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);
}
}
}