Type Alias BinaryViewBuilder 

pub type BinaryViewBuilder = GenericByteViewBuilder<BinaryViewType>;

Array builder for BinaryViewArray

Values can be appended using GenericByteViewBuilder::append_value, and nulls with GenericByteViewBuilder::append_null as normal.

Example

use arrow_array::BinaryViewArray;
let mut builder = BinaryViewBuilder::new();
builder.append_value("hello");
builder.append_null();
builder.append_value("world");
let array = builder.finish();

let expected: Vec<Option<&[u8]>> = vec![Some(b"hello"), None, Some(b"world")];
let actual: Vec<_> = array.iter().collect();
assert_eq!(expected, actual);

Aliased Type

pub struct BinaryViewBuilder {
    views_buffer: Vec<u128>,
    null_buffer_builder: NullBufferBuilder,
    completed: Vec<Buffer>,
    in_progress: Vec<u8>,
    block_size: BlockSizeGrowthStrategy,
    string_tracker: Option<(HashTable<usize>, RandomState)>,
    phantom: PhantomData<BinaryViewType>,
}

Fields

views_buffer: Vec<u128>

null_buffer_builder: NullBufferBuilder

completed: Vec<Buffer>

in_progress: Vec<u8>

block_size: BlockSizeGrowthStrategy

string_tracker: Option<(HashTable<usize>, RandomState)>

Some if deduplicating strings map <string hash> -> <index to the views>

phantom: PhantomData<BinaryViewType>

Trait Implementations

impl BinaryLikeArrayBuilder for BinaryViewBuilder

fn type_name() -> &'static str

Returns a human-readable type name for the builder.

fn with_capacity(capacity: usize) -> Self

Creates a new builder with the given row capacity.

fn append_value(&mut self, value: &[u8])

Appends a non-null string value to the builder.

fn append_null(&mut self)

Appends a null value to the builder.