reifydb_routine/function/datetime/
age.rs

1// SPDX-License-Identifier: Apache-2.0
2// Copyright (c) 2025 ReifyDB
3
4use reifydb_core::value::column::{Column, columns::Columns, data::ColumnData};
5use reifydb_type::value::{container::temporal::TemporalContainer, date::Date, duration::Duration, r#type::Type};
6
7use crate::function::{Function, FunctionCapability, FunctionContext, FunctionInfo, error::FunctionError};
8
9pub struct DateTimeAge {
10	info: FunctionInfo,
11}
12
13impl Default for DateTimeAge {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl DateTimeAge {
20	pub fn new() -> Self {
21		Self {
22			info: FunctionInfo::new("datetime::age"),
23		}
24	}
25}
26
27impl Function for DateTimeAge {
28	fn info(&self) -> &FunctionInfo {
29		&self.info
30	}
31
32	fn capabilities(&self) -> &[FunctionCapability] {
33		&[FunctionCapability::Scalar]
34	}
35
36	fn return_type(&self, _input_types: &[Type]) -> Type {
37		Type::Duration
38	}
39
40	fn execute(&self, ctx: &FunctionContext, args: &Columns) -> Result<Columns, FunctionError> {
41		if args.len() != 2 {
42			return Err(FunctionError::ArityMismatch {
43				function: ctx.fragment.clone(),
44				expected: 2,
45				actual: args.len(),
46			});
47		}
48
49		let col1 = &args[0];
50		let col2 = &args[1];
51		let (data1, bitvec1) = col1.data().unwrap_option();
52		let (data2, bitvec2) = col2.data().unwrap_option();
53		let row_count = data1.len();
54
55		let result_data = match (data1, data2) {
56			(ColumnData::DateTime(container1), ColumnData::DateTime(container2)) => {
57				let mut container = TemporalContainer::with_capacity(row_count);
58
59				for i in 0..row_count {
60					match (container1.get(i), container2.get(i)) {
61						(Some(dt1), Some(dt2)) => {
62							// Extract time nanos since midnight
63							let nanos1 = dt1.time().to_nanos_since_midnight() as i64;
64							let nanos2 = dt2.time().to_nanos_since_midnight() as i64;
65							let mut nanos_diff = nanos1 - nanos2;
66							let mut days_borrow: i32 = 0;
67
68							if nanos_diff < 0 {
69								days_borrow = 1;
70								nanos_diff += 86_400_000_000_000;
71							}
72
73							// Extract date parts
74							let date1 = dt1.date();
75							let date2 = dt2.date();
76
77							let y1 = date1.year();
78							let m1 = date1.month() as i32;
79							let day1 = date1.day() as i32;
80
81							let y2 = date2.year();
82							let m2 = date2.month() as i32;
83							let day2 = date2.day() as i32;
84
85							let mut years = y1 - y2;
86							let mut months = m1 - m2;
87							let mut days = day1 - day2 - days_borrow;
88
89							if days < 0 {
90								months -= 1;
91								let borrow_month = if m1 - 1 < 1 {
92									12
93								} else {
94									m1 - 1
95								};
96								let borrow_year = if m1 - 1 < 1 {
97									y1 - 1
98								} else {
99									y1
100								};
101								days += Date::days_in_month(
102									borrow_year,
103									borrow_month as u32,
104								) as i32;
105							}
106
107							if months < 0 {
108								years -= 1;
109								months += 12;
110							}
111
112							let total_months = years * 12 + months;
113							container.push(Duration::new(total_months, days, nanos_diff)?);
114						}
115						_ => container.push_default(),
116					}
117				}
118
119				ColumnData::Duration(container)
120			}
121			(ColumnData::DateTime(_), other) => {
122				return Err(FunctionError::InvalidArgumentType {
123					function: ctx.fragment.clone(),
124					argument_index: 1,
125					expected: vec![Type::DateTime],
126					actual: other.get_type(),
127				});
128			}
129			(other, _) => {
130				return Err(FunctionError::InvalidArgumentType {
131					function: ctx.fragment.clone(),
132					argument_index: 0,
133					expected: vec![Type::DateTime],
134					actual: other.get_type(),
135				});
136			}
137		};
138
139		let final_data = match (bitvec1, bitvec2) {
140			(Some(bv), _) | (_, Some(bv)) => ColumnData::Option {
141				inner: Box::new(result_data),
142				bitvec: bv.clone(),
143			},
144			_ => result_data,
145		};
146
147		Ok(Columns::new(vec![Column::new(ctx.fragment.clone(), final_data)]))
148	}
149}
reifydb_routine/function/datetime/age.rs

reifydb_routine/function/datetime/
age.rs
