reifydb_function/clock/
now.rs1use reifydb_core::value::column::data::ColumnData;
5use reifydb_type::value::r#type::Type;
6
7use crate::{ScalarFunction, ScalarFunctionContext, error::ScalarFunctionError, propagate_options};
8
9pub struct Now;
10
11impl Now {
12 pub fn new() -> Self {
13 Self {}
14 }
15}
16
17impl ScalarFunction for Now {
18 fn scalar(&self, ctx: ScalarFunctionContext) -> crate::ScalarFunctionResult<ColumnData> {
19 if let Some(result) = propagate_options(self, &ctx) {
20 return result;
21 }
22
23 let row_count = ctx.row_count;
24
25 if ctx.columns.len() != 0 {
26 return Err(ScalarFunctionError::ArityMismatch {
27 function: ctx.fragment.clone(),
28 expected: 0,
29 actual: ctx.columns.len(),
30 });
31 }
32
33 let millis = ctx.clock.now_millis() as i64;
34 let data = vec![millis; row_count];
35 let bitvec = vec![true; row_count];
36
37 Ok(ColumnData::int8_with_bitvec(data, bitvec))
38 }
39
40 fn return_type(&self, _input_types: &[Type]) -> Type {
41 Type::Int8
42 }
43}