private void createSketches()

in src/main/java/org/apache/datasketches/server/SketchStorage.java [152:202]
40 lines of code
11 McCabe index (conditional complexity)

  private void createSketches(final List<SketchServerConfig.SketchInfo> list) throws IllegalArgumentException {
    sketchMap = new HashMap<>(list.size());

    for (final SketchServerConfig.SketchInfo info : list) {
      if (sketchMap.containsKey(info.name)) {
        throw new IllegalArgumentException("Duplicate sketch key: " + info.name);
      }

      SketchEntry sketchEntry = null;
      final Family family = BaseSketchesQueryHandler.familyFromString(info.family);
      final int k = info.k; // to reduce derferences in code later

      switch (family) {
        case QUICKSELECT:
          // make a Union so we can handle merges later
          sketchEntry = new SketchEntry(Family.UNION, ValueType.stringToType(info.type),
              new SetOperationBuilder().setNominalEntries(1 << k).buildUnion(), info.name, k);
          break;

        case HLL:
          sketchEntry = new SketchEntry(Family.HLL, ValueType.stringToType(info.type),
              new HllSketch(k), info.name, k);
          break;

        case CPC:
          sketchEntry = new SketchEntry(Family.CPC, ValueType.stringToType(info.type),
              new CpcSketch(k), info.name, k);
          break;

        case KLL:
          sketchEntry = new SketchEntry(Family.KLL, new KllFloatsSketch(k), info.name, k);
          break;

        case FREQUENCY:
          sketchEntry = new SketchEntry(Family.FREQUENCY, new ItemsSketch<String>(k), info.name, k);
          break;

        case RESERVOIR:
          sketchEntry = new SketchEntry(Family.RESERVOIR, ReservoirItemsSketch.<String>newInstance(k), info.name, k);
          break;

        case VAROPT:
          sketchEntry = new SketchEntry(Family.VAROPT, VarOptItemsSketch.<String>newInstance(k), info.name, k);
          break;
      }

      if (sketchEntry != null) {
        sketchMap.put(info.name, sketchEntry);
      }
    }
  }