Struct BytesArrayBuilder

pub struct BytesArrayBuilder {
    offset: Vec<u32>,
    bitmap: BitmapBuilder,
    data: Vec<u8>,
}

BytesArrayBuilder use &[u8] to build an BytesArray.

Fields

offset: Vec<u32>

bitmap: BitmapBuilder

data: Vec<u8>

Implementations

impl BytesArrayBuilder

pub fn writer(&mut self) -> BytesWriter<'_>

unsafe fn append_partial(&mut self, x: &[u8])

append_partial will add a partial dirty data of the new record. The partial data will keep untracked until finish_partial was called.

fn finish_partial(&mut self)

finish_partial will create a new record based on the current dirty data. finish_partial was safe even if we don’t call append_partial, which is equivalent to appending an empty bytes.

fn rollback_partial(&mut self)

Rollback the partial-written data by Self::append_partial.

This is a safe method, if no append_partial was called, then the call has no effect.

Trait Implementations

impl ArrayBuilder for BytesArrayBuilder

fn new(item_capacity: usize) -> Self

Creates a new BytesArrayBuilder.

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. No additional memory is pre-allocated for the data buffer.

type ArrayType = BytesArray

Corresponding Array of this builder, which is reciprocal to ArrayBuilder.

fn with_type(item_capacity: usize, ty: DataType) -> Self

Panics

fn append_n<'a>(&'a mut self, n: usize, value: Option<&'a [u8]>)

Append a value multiple times.

fn append_array(&mut self, other: &BytesArray)

Append an array to builder.

fn pop(&mut self) -> Option<()>

Pop an element from the builder.

fn len(&self) -> usize

Return the number of elements in the builder.

fn finish(self) -> BytesArray

Finish build and return a new array.

fn append(&mut self, value: Option<<Self::ArrayType as Array>::RefItem<'_>>)

Append a value to builder.

fn append_owned(&mut self, value: Option<<Self::ArrayType as Array>::OwnedItem>)

Append an owned value to builder.

fn append_null(&mut self)

fn append_array_element(&mut self, other: &Self::ArrayType, idx: usize)

Append an element in another array into builder.

fn is_empty(&self) -> bool

Return true if the array has a length of 0.

impl Clone for BytesArrayBuilder

fn clone(&self) -> BytesArrayBuilder

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BytesArrayBuilder

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

Formats the value using the given formatter.

impl EstimateSize for BytesArrayBuilder

fn estimated_heap_size(&self) -> usize

The estimated heap size of the current struct in bytes.

fn estimated_size(&self) -> usize

where Self: Sized,

The estimated total size of the current struct in bytes, including the estimated_heap_size and the size of Self.

impl From<BytesArrayBuilder> for ArrayBuilderImpl

fn from(builder: BytesArrayBuilder) -> Self

Converts to this type from the input type.