Module builders

Builders for Vortex arrays.

Every logical type in Vortex has a canonical (uncompressed) in-memory encoding. This module provides pre-allocated builders to construct new canonical arrays.

Example:

use vortex_array::builders::{builder_with_capacity, ArrayBuilderExt};
use vortex_array::compute::scalar_at;
use vortex_dtype::{DType, Nullability};

// Create a new builder for string data.
let mut builder = builder_with_capacity(&DType::Utf8(Nullability::NonNullable), 4);

builder.append_scalar(&"a".into()).unwrap();
builder.append_scalar(&"b".into()).unwrap();
builder.append_scalar(&"c".into()).unwrap();
builder.append_scalar(&"d".into()).unwrap();

let strings = builder.finish();

assert_eq!(scalar_at(&strings, 0).unwrap(), "a".into());
assert_eq!(scalar_at(&strings, 1).unwrap(), "b".into());
assert_eq!(scalar_at(&strings, 2).unwrap(), "c".into());
assert_eq!(scalar_at(&strings, 3).unwrap(), "d".into());

Structs

BoolBuilder

DecimalBuilder

ExtensionBuilder

ListBuilder

NullBuilder

PrimitiveBuilder

Builder for PrimitiveArray.

UninitRange

VarBinViewBuilder

Traits

ArrayBuilder

ArrayBuilderExt

Functions

builder_with_capacity

Construct a new canonical builder for the given DType.