Struct arrow_array::builder::GenericByteBuilder

pub struct GenericByteBuilder<T: ByteArrayType> { /* private fields */ }

Array builder for GenericByteArray

Implementations

impl<T: ByteArrayType> GenericByteBuilder<T>

pub fn new() -> Self

Creates a new GenericByteBuilder.

pub fn with_capacity(item_capacity: usize, data_capacity: usize) -> Self

Creates a new GenericByteBuilder.

• item_capacity is the number of items to pre-allocate. The size of the preallocated buffer of offsets is the number of items plus one.
• data_capacity is the total number of bytes of data to pre-allocate (for all items, not per item).

pub fn append_value(&mut self, value: impl AsRef<T::Native>)

Appends a value into the builder.

pub fn append_option(&mut self, value: Option<impl AsRef<T::Native>>)

Append an Option value into the builder.

pub fn append_null(&mut self)

Append a null value into the builder.

pub fn finish(&mut self) -> GenericByteArray<T>

Builds the GenericByteArray and reset this builder.

pub fn finish_cloned(&self) -> GenericByteArray<T>

Builds the GenericByteArray without resetting the builder.

pub fn values_slice(&self) -> &[u8]

Returns the current values buffer as a slice

pub fn offsets_slice(&self) -> &[T::Offset]

Returns the current offsets buffer as a slice

Trait Implementations

impl<T: ByteArrayType> ArrayBuilder for GenericByteBuilder<T>

fn len(&self) -> usize

Returns the number of binary slots in the builder

fn is_empty(&self) -> bool

Returns whether the number of binary slots is zero

fn finish(&mut self) -> ArrayRef

Builds the array and reset this builder.

fn finish_cloned(&self) -> ArrayRef

Builds the array without resetting the builder.

fn as_any(&self) -> &dyn Any

Returns the builder as a non-mutable Any reference.

fn as_any_mut(&mut self) -> &mut dyn Any

Returns the builder as a mutable Any reference.

fn into_box_any(self: Box<Self>) -> Box<dyn Any>

Returns the boxed builder as a box of Any.

impl<T: ByteArrayType> Debug for GenericByteBuilder<T>

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

Formats the value using the given formatter.

impl<T: ByteArrayType> Default for GenericByteBuilder<T>

fn default() -> Self

Returns the “default value” for a type.