fromJson static method

Measure? fromJson(dynamic value)

Returns a new Measure instance and imports its values from value if it's a Map, null otherwise.

Implementation

// ignore: prefer_constructors_over_static_methods
static Measure? fromJson(dynamic value) {
  if (value is Map) {
    final json = value.cast<String, dynamic>();

    // Ensure that the map contains the required keys.
    // Note 1: the values aren't checked for validity beyond being non-null.
    // Note 2: this code is stripped in release mode!
    assert(() {
      requiredKeys.forEach((key) {
        assert(json.containsKey(key), 'Required key "Measure[$key]" is missing from JSON.');
        assert(json[key] != null, 'Required key "Measure[$key]" has a null value in JSON.');
      });
      return true;
    }());

    return Measure(
      value: mapValueOfType<double>(json, r'value'),
      min: mapValueOfType<double>(json, r'min'),
      max: mapValueOfType<double>(json, r'max'),
      ref: mapValueOfType<double>(json, r'ref'),
      severity: mapValueOfType<int>(json, r'severity'),
      severityCode: mapValueOfType<String>(json, r'severityCode'),
      evolution: mapValueOfType<int>(json, r'evolution'),
      unit: mapValueOfType<String>(json, r'unit'),
      unitCodes: CodingReference.listFromJson(json[r'unitCodes'])?.toSet() ?? const <CodingReference>{},
      comment: mapValueOfType<String>(json, r'comment'),
      comparator: mapValueOfType<String>(json, r'comparator'),
    );
  }
  return null;
}