ArrowArray constructor

Implementation

ArrowArray(
  this.type,
  List<ArrowValue?> values, {
  List<bool>? validity,
  this.dictionary,
  List<ArrowArray> nestedDictionaries = const [],
}) : nestedDictionaries = List.unmodifiable(nestedDictionaries),
     values = List.unmodifiable(values),
     validity = List.unmodifiable(validity ?? values.map((v) => v != null)) {
  if (this.validity.length != values.length) {
    throw ArgumentError(
      'Validity length ${this.validity.length} does not match value length ${values.length}',
    );
  }
  for (var i = 0; i < values.length; i++) {
    if (this.validity[i] != (values[i] != null)) {
      throw ArgumentError('Validity and value disagree at index $i');
    }
    final value = values[i];
    if (value != null) validateArrowValue(type, value, path: 'values[$i]');
  }
  if (_unwrapExtension(type) case final ArrowRunEndEncodedType ree) {
    _checkRunEndLength(ree, values.length);
    if (!ree.valuesField.nullable && this.validity.contains(false)) {
      throw ArgumentError('Run-end encoded values field is not nullable');
    }
  }
  if (_unwrapExtension(type) is ArrowUnionType &&
      this.validity.contains(false)) {
    throw ArgumentError(
      'Union arrays have no top-level nulls; use ArrowUnionValue(id, null)',
    );
  }
  _validateDictionaries(this);
}