/**
* Constructor
*
* @param ssid The state system's ID
* @param partialInput The state change input object that was used to build the upstream state
* system. This partial history will make its own copy (since they have different targets).
* @param pss The partial history's inner state system. It should already be assigned to
* partialInput.
* @param realBackend The real state history back-end to use. It's supposed to be modular, so it
* should be able to be of any type.
* @param granularity Configuration parameter indicating how many trace events there should be
* between each checkpoint
*/
public PartialHistoryBackend(
@NonNull String ssid,
ITmfStateProvider partialInput,
PartialStateSystem pss,
IStateHistoryBackend realBackend,
long granularity) {
if (granularity <= 0
|| partialInput == null
|| pss == null
|| partialInput.getAssignedStateSystem() != pss) {
throw new IllegalArgumentException();
}
final long startTime = realBackend.getStartTime();
fSSID = ssid;
fPartialInput = partialInput;
fPartialSS = pss;
fInnerHistory = realBackend;
fGranularity = granularity;
fLatestTime = startTime;
registerCheckpoints();
}
@Override
public long getStartTime() {
return fInnerHistory.getStartTime();
}