/** @since 3.0 */
@Override
public synchronized ITmfContext seekEvent(final ITmfLocation location) {
// Validate the location
if (location != null && !(location instanceof TmfExperimentLocation)) {
return null; // Throw an exception?
}
// Make sure we have something to read from
if (fTraces == null) {
return null;
}
// Initialize the location array if necessary
TmfLocationArray locationArray =
((location == null)
? new TmfLocationArray(fTraces.length)
: ((TmfExperimentLocation) location).getLocationInfo());
ITmfLocation[] locations = locationArray.getLocations();
long[] ranks = locationArray.getRanks();
// Create and populate the context's traces contexts
final TmfExperimentContext context = new TmfExperimentContext(fTraces.length);
// Position the traces
long rank = 0;
for (int i = 0; i < fTraces.length; i++) {
// Get the relevant trace attributes
final ITmfContext traceContext = fTraces[i].seekEvent(locations[i]);
context.setContext(i, traceContext);
traceContext.setRank(ranks[i]);
locations[i] = traceContext.getLocation(); // update location after seek
context.setEvent(i, fTraces[i].getNext(traceContext));
rank += ranks[i];
}
// Finalize context
context.setLocation(new TmfExperimentLocation(new TmfLocationArray(locations, ranks)));
context.setLastTrace(TmfExperimentContext.NO_TRACE);
context.setRank(rank);
return context;
}
