reifydb_function/clock/
now.rs1use reifydb_core::value::column::data::ColumnData;
5use reifydb_type::value::r#type::Type;
6
7use crate::{
8 ScalarFunction, ScalarFunctionContext, ScalarFunctionResult, error::ScalarFunctionError, propagate_options,
9};
10
11pub struct Now;
12
13impl Now {
14 pub fn new() -> Self {
15 Self {}
16 }
17}
18
19impl ScalarFunction for Now {
20 fn scalar(&self, ctx: ScalarFunctionContext) -> ScalarFunctionResult<ColumnData> {
21 if let Some(result) = propagate_options(self, &ctx) {
22 return result;
23 }
24
25 let row_count = ctx.row_count;
26
27 if ctx.columns.len() != 0 {
28 return Err(ScalarFunctionError::ArityMismatch {
29 function: ctx.fragment.clone(),
30 expected: 0,
31 actual: ctx.columns.len(),
32 });
33 }
34
35 let millis = ctx.clock.now_millis() as i64;
36 let data = vec![millis; row_count];
37 let bitvec = vec![true; row_count];
38
39 Ok(ColumnData::int8_with_bitvec(data, bitvec))
40 }
41
42 fn return_type(&self, _input_types: &[Type]) -> Type {
43 Type::Int8
44 }
45}