reifydb_function/datetime/
time.rs

1// SPDX-License-Identifier: AGPL-3.0-or-later
2// Copyright (c) 2025 ReifyDB
3
4use reifydb_core::value::column::data::ColumnData;
5use reifydb_type::value::{container::temporal::TemporalContainer, r#type::Type};
6
7use crate::{
8	ScalarFunction, ScalarFunctionContext,
9	error::{ScalarFunctionError, ScalarFunctionResult},
10	propagate_options,
11};
12
13pub struct DateTimeTime;
14
15impl DateTimeTime {
16	pub fn new() -> Self {
17		Self
18	}
19}
20
21impl ScalarFunction for DateTimeTime {
22	fn scalar(&self, ctx: ScalarFunctionContext) -> ScalarFunctionResult<ColumnData> {
23		if let Some(result) = propagate_options(self, &ctx) {
24			return result;
25		}
26		let columns = ctx.columns;
27		let row_count = ctx.row_count;
28
29		if columns.len() != 1 {
30			return Err(ScalarFunctionError::ArityMismatch {
31				function: ctx.fragment.clone(),
32				expected: 1,
33				actual: columns.len(),
34			});
35		}
36
37		let col = columns.get(0).unwrap();
38
39		match col.data() {
40			ColumnData::DateTime(container) => {
41				let mut result = TemporalContainer::with_capacity(row_count);
42
43				for i in 0..row_count {
44					if let Some(dt) = container.get(i) {
45						result.push(dt.time());
46					} else {
47						result.push_default();
48					}
49				}
50
51				Ok(ColumnData::Time(result))
52			}
53			other => Err(ScalarFunctionError::InvalidArgumentType {
54				function: ctx.fragment.clone(),
55				argument_index: 0,
56				expected: vec![Type::DateTime],
57				actual: other.get_type(),
58			}),
59		}
60	}
61
62	fn return_type(&self, _input_types: &[Type]) -> Type {
63		Type::Time
64	}
65}
reifydb_function/datetime/time.rs

reifydb_function/datetime/
time.rs
