Struct DFVariableShapeTensor 

pub struct DFVariableShapeTensor { /* private fields */ }

Defines the extension type logic for the canonical arrow.variable_shape_tensor extension type. This extension type can be used to store a tensor with variable shape that can change for each element.

See DFExtensionType for information on DataFusion’s extension type mechanism. See also VariableShapeTensor for the implementation of arrow-rs, which this type uses internally.

https://arrow.apache.org/docs/format/CanonicalExtensions.html#variable-shape-tensor

Implementations

impl DFVariableShapeTensor

pub fn try_new( data_type: &DataType, metadata: <VariableShapeTensor as ExtensionType>::Metadata, ) -> Result<Self>

Creates a new DFVariableShapeTensor, validating that the storage type is compatible with the extension type.

Trait Implementations

impl Clone for DFVariableShapeTensor

fn clone(&self) -> DFVariableShapeTensor

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl DFExtensionType for DFVariableShapeTensor

fn storage_type(&self) -> DataType

Returns the underlying storage type.

fn serialize_metadata(&self) -> Option<String>

Returns the serialized metadata.

fn create_array_formatter<'fmt>( &self, _array: &'fmt dyn Array, _options: &FormatOptions<'fmt>, ) -> Result<Option<ArrayFormatter<'fmt>>>

Returns an ArrayFormatter that can format values of this type.

impl Debug for DFVariableShapeTensor

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.