public void forcePointRead(int dataPointId) {
DataPointRT dataPoint = dataPoints.get(dataPointId);
if (dataPoint == null) throw new RTException("Point is not enabled");
// Tell the data source to read the point value;
DataSourceRT ds = getRunningDataSource(dataPoint.getDataSourceId());
if (ds != null)
// The data source may have been disabled. Just make sure.
ds.forcePointRead(dataPoint);
}
public void setDataPointValue(int dataPointId, PointValueTime valueTime, SetPointSource source) {
DataPointRT dataPoint = dataPoints.get(dataPointId);
if (dataPoint == null) throw new RTException("Point is not enabled");
if (!dataPoint.getPointLocator().isSettable()) throw new RTException("Point is not settable");
// Tell the data source to set the value of the point.
DataSourceRT ds = getRunningDataSource(dataPoint.getDataSourceId());
// The data source may have been disabled. Just make sure.
if (ds != null) ds.setPointValue(dataPoint, valueTime, source);
}
public void relinquish(int dataPointId) {
DataPointRT dataPoint = dataPoints.get(dataPointId);
if (dataPoint == null) throw new RTException("Point is not enabled");
if (!dataPoint.getPointLocator().isSettable()) throw new RTException("Point is not settable");
if (!dataPoint.getPointLocator().isRelinquishable())
throw new RTException("Point is not relinquishable");
// Tell the data source to relinquish value of the point.
DataSourceRT ds = getRunningDataSource(dataPoint.getDataSourceId());
// The data source may have been disabled. Just make sure.
if (ds != null) ds.relinquish(dataPoint);
}
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 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");
}
}
