datafusion-functions 44.0.0

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//
//   http://www.apache.org/licenses/LICENSE-2.0
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extern crate criterion;

use arrow::util::bench_util::create_string_array_with_len;
use criterion::{black_box, criterion_group, criterion_main, Criterion};
use datafusion_expr::ColumnarValue;
use datafusion_functions::string;
use std::sync::Arc;

/// Create an array of args containing a StringArray, where all the values in the
/// StringArray are ASCII.
/// * `size` - the length of the StringArray, and
/// * `str_len` - the length of the strings within the StringArray.
fn create_args(size: usize, str_len: usize) -> Vec<ColumnarValue> {
    let array = Arc::new(create_string_array_with_len::<i32>(size, 0.2, str_len));
    vec![ColumnarValue::Array(array)]
}

fn criterion_benchmark(c: &mut Criterion) {
    let upper = string::upper();
    for size in [1024, 4096, 8192] {
        let args = create_args(size, 32);
        c.bench_function("upper_all_values_are_ascii", |b| {
            b.iter(|| {
                // TODO use invoke_with_args
                black_box(upper.invoke_batch(&args, size))
            })
        });
    }
}

criterion_group!(benches, criterion_benchmark);
criterion_main!(benches);