public FetchData(long steps, long endTime, FetchRequest request) { this.arcStep = matchingArchive.getArcStep(); this.arcEndTime = matchingArchive.getEndTime(); this.dsNames = request.getFilter(); this.request = request; }
public FetchData(Archive matchingArchive, FetchRequest request) { this.matchingArchive = matchingArchive; this.arcStep = matchingArchive.getArcStep(); this.arcEndTime = matchingArchive.getEndTime(); this.dsNames = request.getFilter(); if (this.dsNames == null) { this.dsNames = matchingArchive.getParentDb().getDsNames(); } this.request = request; }
public FetchData fetchData(FetchRequest request) { long arcStep = getArcStep(); long fetchStart = Util.normalize(request.FetchStart, arcStep); long fetchEnd = Util.normalize(request.FetchEnd, arcStep); if (fetchEnd < request.FetchEnd) { fetchEnd += arcStep; } long startTime = getStartTime(); long endTime = getEndTime(); String[] dsToFetch = request.getFilter(); if (dsToFetch == null) { dsToFetch = parentDb.getDsNames(); } int dsCount = dsToFetch.Length; int ptsCount = (int)((fetchEnd - fetchStart) / arcStep + 1); long[] timestamps = new long[ptsCount]; double[][] values = new double[dsCount][]; for (int i = 0; i < dsCount; i++) { values[i] = new double[ptsCount]; } long matchStartTime = Math.Max(fetchStart, startTime); long matchEndTime = Math.Min(fetchEnd, endTime); double[][] robinValues = null; if (matchStartTime <= matchEndTime) { // preload robin values int matchCount = (int)((matchEndTime - matchStartTime) / arcStep + 1); int matchStartIndex = (int)((matchStartTime - startTime) / arcStep); robinValues = new double[dsCount][]; for (int i = 0; i < dsCount; i++) { int dsIndex = parentDb.getDsIndex(dsToFetch[i]); robinValues[i] = robins[dsIndex].getValues(matchStartIndex, matchCount); } } for (int ptIndex = 0; ptIndex < ptsCount; ptIndex++) { long time = fetchStart + ptIndex * arcStep; timestamps[ptIndex] = time; for (int i = 0; i < dsCount; i++) { double value = Double.NaN; if (time >= matchStartTime && time <= matchEndTime) { // inbound time int robinValueIndex = (int)((time - matchStartTime) / arcStep); Debug.Assert(robinValues != null); value = robinValues[i][robinValueIndex]; } values[i][ptIndex] = value; } } FetchData fetchData = new FetchData(steps.get(), endTime, parentDb.getDsNames()); fetchData.setTimestamps(timestamps); fetchData.setValues(values); return(fetchData); }