reifydb_routine/function/datetime/
now.rs

1// SPDX-License-Identifier: Apache-2.0
2// Copyright (c) 2025 ReifyDB
3
4use reifydb_core::value::column::{ColumnWithName, buffer::ColumnBuffer, columns::Columns};
5use reifydb_type::value::{container::temporal::TemporalContainer, datetime::DateTime, r#type::Type};
6
7use crate::routine::{Function, FunctionKind, Routine, RoutineInfo, context::FunctionContext, error::RoutineError};
8
9pub struct DateTimeNow {
10	info: RoutineInfo,
11}
12
13impl Default for DateTimeNow {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl DateTimeNow {
20	pub fn new() -> Self {
21		Self {
22			info: RoutineInfo::new("datetime::now"),
23		}
24	}
25}
26
27impl<'a> Routine<FunctionContext<'a>> for DateTimeNow {
28	fn info(&self) -> &RoutineInfo {
29		&self.info
30	}
31
32	fn return_type(&self, _input_types: &[Type]) -> Type {
33		Type::DateTime
34	}
35
36	fn execute(&self, ctx: &mut FunctionContext<'a>, args: &Columns) -> Result<Columns, RoutineError> {
37		if !args.is_empty() {
38			return Err(RoutineError::FunctionArityMismatch {
39				function: ctx.fragment.clone(),
40				expected: 0,
41				actual: args.len(),
42			});
43		}
44
45		let row_count = args.row_count().max(1);
46
47		let millis = ctx.runtime_context.clock.now_millis();
48		let dt = DateTime::from_timestamp_millis(millis)?;
49
50		let mut container = TemporalContainer::with_capacity(row_count);
51		for _ in 0..row_count {
52			container.push(dt);
53		}
54
55		Ok(Columns::new(vec![ColumnWithName::new(ctx.fragment.clone(), ColumnBuffer::DateTime(container))]))
56	}
57}
58
59impl Function for DateTimeNow {
60	fn kinds(&self) -> &[FunctionKind] {
61		&[FunctionKind::Scalar]
62	}
63}
reifydb_routine/function/datetime/now.rs

reifydb_routine/function/datetime/
now.rs
