Type Alias arrow_array::array::ArrayRef

pub type ArrayRef = Arc<dyn Array>;

A reference-counted reference to a generic Array

Aliased Type

struct ArrayRef { /* private fields */ }

Trait Implementations

impl Array for ArrayRef

Ergonomics: Allow use of an ArrayRef as an &dyn Array

fn as_any(&self) -> &dyn Any

Returns the array as Any so that it can be downcasted to a specific implementation.

fn to_data(&self) -> ArrayData

Returns the underlying data of this array

fn into_data(self) -> ArrayData

Returns the underlying data of this array

fn data_type(&self) -> &DataType

Returns a reference to the DataType of this array.

fn slice(&self, offset: usize, length: usize) -> ArrayRef

Returns a zero-copy slice of this array with the indicated offset and length.

fn len(&self) -> usize

Returns the length (i.e., number of elements) of this array.

fn is_empty(&self) -> bool

Returns whether this array is empty.

fn offset(&self) -> usize

Returns the offset into the underlying data used by this array(-slice). Note that the underlying data can be shared by many arrays. This defaults to 0.

fn nulls(&self) -> Option<&NullBuffer>

Returns the null buffer of this array if any.

fn logical_nulls(&self) -> Option<NullBuffer>

Returns a potentially computed NullBuffer that represents the logical null values of this array, if any.

fn is_null(&self, index: usize) -> bool

Returns whether the element at index is null according to Array::nulls

fn is_valid(&self, index: usize) -> bool

Returns whether the element at index is not null, the opposite of Self::is_null.

fn null_count(&self) -> usize

Returns the total number of physical null values in this array.

fn is_nullable(&self) -> bool

Returns false if the array is guaranteed to not contain any logical nulls

fn get_buffer_memory_size(&self) -> usize

Returns the total number of bytes of memory pointed to by this array. The buffers store bytes in the Arrow memory format, and include the data as well as the validity map. Note that this does not always correspond to the exact memory usage of an array, since multiple arrays can share the same buffers or slices thereof.

fn get_array_memory_size(&self) -> usize

Returns the total number of bytes of memory occupied physically by this array. This value will always be greater than returned by get_buffer_memory_size() and includes the overhead of the data structures that contain the pointers to the various buffers.

impl AsArray for ArrayRef

fn as_boolean_opt(&self) -> Option<&BooleanArray>

Downcast this to a BooleanArray returning None if not possible

fn as_primitive_opt<T: ArrowPrimitiveType>(&self) -> Option<&PrimitiveArray<T>>

Downcast this to a PrimitiveArray returning None if not possible

fn as_bytes_opt<T: ByteArrayType>(&self) -> Option<&GenericByteArray<T>>

Downcast this to a GenericByteArray returning None if not possible

fn as_struct_opt(&self) -> Option<&StructArray>

Downcast this to a StructArray returning None if not possible

fn as_list_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericListArray<O>>

Downcast this to a GenericListArray returning None if not possible

fn as_fixed_size_binary_opt(&self) -> Option<&FixedSizeBinaryArray>

Downcast this to a FixedSizeBinaryArray returning None if not possible

fn as_fixed_size_list_opt(&self) -> Option<&FixedSizeListArray>

Downcast this to a FixedSizeListArray returning None if not possible

fn as_map_opt(&self) -> Option<&MapArray>

Downcast this to a MapArray returning None if not possible

fn as_dictionary_opt<K: ArrowDictionaryKeyType>( &self, ) -> Option<&DictionaryArray<K>>

Downcast this to a DictionaryArray returning None if not possible

fn as_any_dictionary_opt(&self) -> Option<&dyn AnyDictionaryArray>

Downcasts this to a AnyDictionaryArray returning None if not possible

fn as_boolean(&self) -> &BooleanArray

Downcast this to a BooleanArray panicking if not possible

fn as_primitive<T: ArrowPrimitiveType>(&self) -> &PrimitiveArray<T>

Downcast this to a PrimitiveArray panicking if not possible

fn as_bytes<T: ByteArrayType>(&self) -> &GenericByteArray<T>

Downcast this to a GenericByteArray panicking if not possible

fn as_string_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericStringArray<O>>

Downcast this to a GenericStringArray returning None if not possible

fn as_string<O: OffsetSizeTrait>(&self) -> &GenericStringArray<O>

Downcast this to a GenericStringArray panicking if not possible

fn as_binary_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericBinaryArray<O>>

Downcast this to a GenericBinaryArray returning None if not possible

fn as_binary<O: OffsetSizeTrait>(&self) -> &GenericBinaryArray<O>

Downcast this to a GenericBinaryArray panicking if not possible

fn as_struct(&self) -> &StructArray

Downcast this to a StructArray panicking if not possible

fn as_list<O: OffsetSizeTrait>(&self) -> &GenericListArray<O>

Downcast this to a GenericListArray panicking if not possible

fn as_fixed_size_binary(&self) -> &FixedSizeBinaryArray

Downcast this to a FixedSizeBinaryArray panicking if not possible

fn as_fixed_size_list(&self) -> &FixedSizeListArray

Downcast this to a FixedSizeListArray panicking if not possible

fn as_map(&self) -> &MapArray

Downcast this to a MapArray panicking if not possible

fn as_dictionary<K: ArrowDictionaryKeyType>(&self) -> &DictionaryArray<K>

Downcast this to a DictionaryArray panicking if not possible

fn as_any_dictionary(&self) -> &dyn AnyDictionaryArray

Downcasts this to a AnyDictionaryArray panicking if not possible