constructor ValueUpdate

Source

ValueUpdate(this.value,
    {this.ts,
    Map meta,
    this.status,
    this.count: 1,
    this.sum: double.NAN,
    this.min: double.NAN,
    this.max: double.NAN}) {
  if (ts == null) {
    ts = getTs();
  }

  created = new DateTime.now();

  if (meta != null) {
    if (meta["count"] is int) {
      count = meta["count"];
    } else if (value == null) {
      count = 0;
    }

    if (meta["status"] is String) {
      status = meta["status"];
    }

    if (meta["sum"] is num) {
      sum = meta["sum"];
    }

    if (meta["max"] is num) {
      max = meta["max"];
    }

    if (meta["min"] is num) {
      min = meta["min"];
    }
  }

  if (value is num && count == 1) {
    if (sum != sum) sum = value;
    if (max != max) max = value;
    if (min != min) min = value;
  }
}