Trait AsArray 

pub trait AsArray: Sealed {
    // Required methods
    fn as_boolean_opt(&self) -> Option<&BooleanArray>;
    fn as_primitive_opt<T: ArrowPrimitiveType>(
        &self,
    ) -> Option<&PrimitiveArray<T>>;
    fn as_bytes_opt<T: ByteArrayType>(&self) -> Option<&GenericByteArray<T>>;
    fn as_byte_view_opt<T: ByteViewType>(
        &self,
    ) -> Option<&GenericByteViewArray<T>>;
    fn as_struct_opt(&self) -> Option<&StructArray>;
    fn as_union_opt(&self) -> Option<&UnionArray>;
    fn as_list_opt<O: OffsetSizeTrait>(&self) -> Option<&GenericListArray<O>>;
    fn as_list_view_opt<O: OffsetSizeTrait>(
        &self,
    ) -> Option<&GenericListViewArray<O>>;
    fn as_fixed_size_binary_opt(&self) -> Option<&FixedSizeBinaryArray>;
    fn as_fixed_size_list_opt(&self) -> Option<&FixedSizeListArray>;
    fn as_map_opt(&self) -> Option<&MapArray>;
    fn as_dictionary_opt<K: ArrowDictionaryKeyType>(
        &self,
    ) -> Option<&DictionaryArray<K>>;
    fn as_run_opt<K: RunEndIndexType>(&self) -> Option<&RunArray<K>>;
    fn as_any_dictionary_opt(&self) -> Option<&dyn AnyDictionaryArray>;
    fn as_any_ree_opt(&self) -> Option<&dyn AnyRunEndArray>;

    // Provided methods
    fn as_boolean(&self) -> &BooleanArray { ... }
    fn as_primitive<T: ArrowPrimitiveType>(&self) -> &PrimitiveArray<T> { ... }
    fn as_bytes<T: ByteArrayType>(&self) -> &GenericByteArray<T> { ... }
    fn as_string_opt<O: OffsetSizeTrait>(
        &self,
    ) -> Option<&GenericStringArray<O>> { ... }
    fn as_string<O: OffsetSizeTrait>(&self) -> &GenericStringArray<O> { ... }
    fn as_binary_opt<O: OffsetSizeTrait>(
        &self,
    ) -> Option<&GenericBinaryArray<O>> { ... }
    fn as_binary<O: OffsetSizeTrait>(&self) -> &GenericBinaryArray<O> { ... }
    fn as_string_view_opt(&self) -> Option<&StringViewArray> { ... }
    fn as_string_view(&self) -> &StringViewArray { ... }
    fn as_binary_view_opt(&self) -> Option<&BinaryViewArray> { ... }
    fn as_binary_view(&self) -> &BinaryViewArray { ... }
    fn as_byte_view<T: ByteViewType>(&self) -> &GenericByteViewArray<T> { ... }
    fn as_struct(&self) -> &StructArray { ... }
    fn as_union(&self) -> &UnionArray { ... }
    fn as_list<O: OffsetSizeTrait>(&self) -> &GenericListArray<O> { ... }
    fn as_list_view<O: OffsetSizeTrait>(&self) -> &GenericListViewArray<O> { ... }
    fn as_fixed_size_binary(&self) -> &FixedSizeBinaryArray { ... }
    fn as_fixed_size_list(&self) -> &FixedSizeListArray { ... }
    fn as_map(&self) -> &MapArray { ... }
    fn as_dictionary<K: ArrowDictionaryKeyType>(&self) -> &DictionaryArray<K> { ... }
    fn as_run<K: RunEndIndexType>(&self) -> &RunArray<K> { ... }
    fn as_any_dictionary(&self) -> &dyn AnyDictionaryArray { ... }
    fn as_any_ree(&self) -> &dyn AnyRunEndArray { ... }
}

An extension trait for dyn Array that provides ergonomic downcasting

let col = Arc::new(Int32Array::from(vec![1, 2, 3])) as ArrayRef;
assert_eq!(col.as_primitive::<Int32Type>().values(), &[1, 2, 3]);

Required Methods

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_byte_view_opt<T: ByteViewType>(&self) -> Option<&GenericByteViewArray<T>>

Downcast this to a GenericByteViewArray returning None if not possible

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

Downcast this to a StructArray returning None if not possible

fn as_union_opt(&self) -> Option<&UnionArray>

Downcast this to a UnionArray 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_list_view_opt<O: OffsetSizeTrait>( &self, ) -> Option<&GenericListViewArray<O>>

Downcast this to a GenericListViewArray 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_run_opt<K: RunEndIndexType>(&self) -> Option<&RunArray<K>>

Downcast this to a RunArray 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_any_ree_opt(&self) -> Option<&dyn AnyRunEndArray>

Downcasts this to a AnyRunEndArray returning None if not possible

Provided Methods

fn as_boolean(&self) -> &BooleanArray

Downcast this to a BooleanArray

Panics

Panics if this is not a BooleanArray

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

Downcast this to a PrimitiveArray

Panics

Panics if this is not a PrimitiveArray

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

Downcast this to a GenericByteArray

Panics

Panics if this is not a GenericByteArray

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

Panics

Panics if this is not a GenericStringArray

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

Panics

Panics if this is not a GenericBinaryArray

fn as_string_view_opt(&self) -> Option<&StringViewArray>

Downcast this to a StringViewArray returning None if not possible

fn as_string_view(&self) -> &StringViewArray

Downcast this to a StringViewArray

Panics

Panics if this is not a StringViewArray

fn as_binary_view_opt(&self) -> Option<&BinaryViewArray>

Downcast this to a BinaryViewArray returning None if not possible

fn as_binary_view(&self) -> &BinaryViewArray

Downcast this to a BinaryViewArray

Panics

Panics if this is not a BinaryViewArray

fn as_byte_view<T: ByteViewType>(&self) -> &GenericByteViewArray<T>

Downcast this to a GenericByteViewArray

Panics

Panics if this is not a GenericByteViewArray

fn as_struct(&self) -> &StructArray

Downcast this to a StructArray

Panics

Panics if this is not a StructArray

fn as_union(&self) -> &UnionArray

Downcast this to a UnionArray

Panics

Panics if this is not a UnionArray

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

Downcast this to a GenericListArray

Panics

Panics if this is not a GenericListArray

fn as_list_view<O: OffsetSizeTrait>(&self) -> &GenericListViewArray<O>

Downcast this to a GenericListViewArray

Panics

Panics if this is not a GenericListViewArray

fn as_fixed_size_binary(&self) -> &FixedSizeBinaryArray

Downcast this to a FixedSizeBinaryArray

Panics

Panics if this is not a FixedSizeBinaryArray

fn as_fixed_size_list(&self) -> &FixedSizeListArray

Downcast this to a FixedSizeListArray

Panics

Panics if this is not a FixedSizeListArray

fn as_map(&self) -> &MapArray

Downcast this to a MapArray

Panics

Panics if this is not a MapArray

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

Downcast this to a DictionaryArray

Panics

Panics if this is not a DictionaryArray

fn as_run<K: RunEndIndexType>(&self) -> &RunArray<K>

Downcast this to a RunArray

Panics

Panics if this is not a RunArray

fn as_any_dictionary(&self) -> &dyn AnyDictionaryArray

Downcasts this to a AnyDictionaryArray

Panics

Panics if this is not a AnyDictionaryArray

fn as_any_ree(&self) -> &dyn AnyRunEndArray

Downcasts this to a AnyRunEndArray

Panics

Panics if this is not a AnyRunEndArray

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl AsArray for ArrayRef

impl AsArray for dyn Array + '_