reifydb_function/duration/
trunc.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, duration::Duration, r#type::Type};
6
7use crate::{
8	ScalarFunction, ScalarFunctionContext,
9	error::{ScalarFunctionError, ScalarFunctionResult},
10	propagate_options,
11};
12
13pub struct DurationTrunc;
14
15impl DurationTrunc {
16	pub fn new() -> Self {
17		Self
18	}
19}
20
21impl ScalarFunction for DurationTrunc {
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() != 2 {
30			return Err(ScalarFunctionError::ArityMismatch {
31				function: ctx.fragment.clone(),
32				expected: 2,
33				actual: columns.len(),
34			});
35		}
36
37		let dur_col = columns.get(0).unwrap();
38		let prec_col = columns.get(1).unwrap();
39
40		match (dur_col.data(), prec_col.data()) {
41			(
42				ColumnData::Duration(dur_container),
43				ColumnData::Utf8 {
44					container: prec_container,
45					..
46				},
47			) => {
48				let mut container = TemporalContainer::with_capacity(row_count);
49
50				for i in 0..row_count {
51					match (dur_container.get(i), prec_container.is_defined(i)) {
52						(Some(dur), true) => {
53							let precision = &prec_container[i];
54							let months = dur.get_months();
55							let days = dur.get_days();
56							let nanos = dur.get_nanos();
57
58							let truncated = match precision.as_str() {
59								"year" => Duration::new((months / 12) * 12, 0, 0),
60								"month" => Duration::new(months, 0, 0),
61								"day" => Duration::new(months, days, 0),
62								"hour" => Duration::new(
63									months,
64									days,
65									(nanos / 3_600_000_000_000) * 3_600_000_000_000,
66								),
67								"minute" => Duration::new(
68									months,
69									days,
70									(nanos / 60_000_000_000) * 60_000_000_000,
71								),
72								"second" => Duration::new(
73									months,
74									days,
75									(nanos / 1_000_000_000) * 1_000_000_000,
76								),
77								"millis" => Duration::new(
78									months,
79									days,
80									(nanos / 1_000_000) * 1_000_000,
81								),
82								other => {
83									return Err(
84										ScalarFunctionError::ExecutionFailed {
85											function: ctx.fragment.clone(),
86											reason: format!(
87												"invalid precision: '{}'",
88												other
89											),
90										},
91									);
92								}
93							};
94							container.push(truncated);
95						}
96						_ => container.push_default(),
97					}
98				}
99
100				Ok(ColumnData::Duration(container))
101			}
102			(ColumnData::Duration(_), other) => Err(ScalarFunctionError::InvalidArgumentType {
103				function: ctx.fragment.clone(),
104				argument_index: 1,
105				expected: vec![Type::Utf8],
106				actual: other.get_type(),
107			}),
108			(other, _) => Err(ScalarFunctionError::InvalidArgumentType {
109				function: ctx.fragment.clone(),
110				argument_index: 0,
111				expected: vec![Type::Duration],
112				actual: other.get_type(),
113			}),
114		}
115	}
116
117	fn return_type(&self, _input_types: &[Type]) -> Type {
118		Type::Duration
119	}
120}
reifydb_function/duration/trunc.rs

reifydb_function/duration/
trunc.rs
