private void stopDataSource(int id) {
synchronized (runningDataSources) {
DataSourceRT dataSource = getRunningDataSource(id);
if (dataSource == null) return;
// Stop the data points.
for (DataPointRT p : dataPoints.values()) {
if (p.getDataSourceId() == id) stopDataPoint(p.getId());
}
runningDataSources.remove(dataSource);
dataSource.terminate();
dataSource.joinTermination();
LOG.info("Data source '" + dataSource.getName() + "' stopped");
}
}
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);
}
}
}