reifydb_function/date/
diff.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::{ScalarFunction, ScalarFunctionContext, error::ScalarFunctionError, propagate_options};
8
9pub struct DateDiff;
10
11impl DateDiff {
12	pub fn new() -> Self {
13		Self
14	}
15}
16
17impl ScalarFunction for DateDiff {
18	fn scalar(&self, ctx: ScalarFunctionContext) -> crate::error::ScalarFunctionResult<ColumnData> {
19		if let Some(result) = propagate_options(self, &ctx) {
20			return result;
21		}
22
23		let columns = ctx.columns;
24		let row_count = ctx.row_count;
25
26		if columns.len() != 2 {
27			return Err(ScalarFunctionError::ArityMismatch {
28				function: ctx.fragment.clone(),
29				expected: 2,
30				actual: columns.len(),
31			});
32		}
33
34		let col1 = columns.get(0).unwrap();
35		let col2 = columns.get(1).unwrap();
36
37		match (col1.data(), col2.data()) {
38			(ColumnData::Date(container1), ColumnData::Date(container2)) => {
39				let mut container = TemporalContainer::with_capacity(row_count);
40
41				for i in 0..row_count {
42					match (container1.get(i), container2.get(i)) {
43						(Some(d1), Some(d2)) => {
44							let diff_days = (d1.to_days_since_epoch()
45								- d2.to_days_since_epoch()) as i64;
46							container.push(Duration::from_days(diff_days));
47						}
48						_ => container.push_default(),
49					}
50				}
51
52				Ok(ColumnData::Duration(container))
53			}
54			(ColumnData::Date(_), other) => Err(ScalarFunctionError::InvalidArgumentType {
55				function: ctx.fragment.clone(),
56				argument_index: 1,
57				expected: vec![Type::Date],
58				actual: other.get_type(),
59			}),
60			(other, _) => Err(ScalarFunctionError::InvalidArgumentType {
61				function: ctx.fragment.clone(),
62				argument_index: 0,
63				expected: vec![Type::Date],
64				actual: other.get_type(),
65			}),
66		}
67	}
68
69	fn return_type(&self, _input_types: &[Type]) -> Type {
70		Type::Duration
71	}
72}
reifydb_function/date/diff.rs

reifydb_function/date/
diff.rs
