/**
* WaveformSnapshot constructor.
*
* @param correlation The pulse's correlation event from which we extract the waveforms.
* @param pvMap The map of entries each containing a waveform id as the key and PV name as the
* value.
* @param timeMap The map of entries each containing a waveform id as the key and the associated
* WaveformTime as the value
*/
public WaveformSnapshot(
final Correlation<ChannelTimeRecord> correlation,
final Map<String, String> pvMap,
final Map<String, WaveformTime> timeMap) {
timestamp = correlation.meanDate();
final Set<String> keys = new HashSet<>(pvMap.keySet());
keys.retainAll(correlation.names());
int count = keys.size();
waveforms = new Waveform[count];
int index = 0;
for (final String key : keys) {
final ChannelRecord record = correlation.getRecord(key);
final WaveformTime timeInfo = timeMap.get(key);
final String pvName = pvMap.get(key);
waveforms[index] = new Waveform(pvName, record.doubleArray(), timeInfo);
++index;
}
}
