reifydb_routine/function/time/
diff.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, duration::Duration, r#type::Type};
6
7use crate::routine::{Function, FunctionKind, Routine, RoutineInfo, context::FunctionContext, error::RoutineError};
8
9pub struct TimeDiff {
10	info: RoutineInfo,
11}
12
13impl Default for TimeDiff {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl TimeDiff {
20	pub fn new() -> Self {
21		Self {
22			info: RoutineInfo::new("time::diff"),
23		}
24	}
25}
26
27impl<'a> Routine<FunctionContext<'a>> for TimeDiff {
28	fn info(&self) -> &RoutineInfo {
29		&self.info
30	}
31
32	fn return_type(&self, _input_types: &[Type]) -> Type {
33		Type::Duration
34	}
35
36	fn execute(&self, ctx: &mut FunctionContext<'a>, args: &Columns) -> Result<Columns, RoutineError> {
37		if args.len() != 2 {
38			return Err(RoutineError::FunctionArityMismatch {
39				function: ctx.fragment.clone(),
40				expected: 2,
41				actual: args.len(),
42			});
43		}
44
45		let col1 = &args[0];
46		let col2 = &args[1];
47
48		let (data1, bv1) = col1.unwrap_option();
49		let (data2, bv2) = col2.unwrap_option();
50
51		match (data1, data2) {
52			(ColumnBuffer::Time(container1), ColumnBuffer::Time(container2)) => {
53				let row_count = data1.len();
54				let mut container = TemporalContainer::with_capacity(row_count);
55
56				for i in 0..row_count {
57					match (container1.get(i), container2.get(i)) {
58						(Some(t1), Some(t2)) => {
59							let diff_nanos = t1.to_nanos_since_midnight() as i64
60								- t2.to_nanos_since_midnight() as i64;
61							container.push(Duration::from_nanoseconds(diff_nanos)?);
62						}
63						_ => container.push_default(),
64					}
65				}
66
67				let mut result_data = ColumnBuffer::Duration(container);
68				if let Some(bv) = bv1 {
69					result_data = ColumnBuffer::Option {
70						inner: Box::new(result_data),
71						bitvec: bv.clone(),
72					};
73				} else if let Some(bv) = bv2 {
74					result_data = ColumnBuffer::Option {
75						inner: Box::new(result_data),
76						bitvec: bv.clone(),
77					};
78				}
79				Ok(Columns::new(vec![ColumnWithName::new(ctx.fragment.clone(), result_data)]))
80			}
81			(ColumnBuffer::Time(_), other) => Err(RoutineError::FunctionInvalidArgumentType {
82				function: ctx.fragment.clone(),
83				argument_index: 1,
84				expected: vec![Type::Time],
85				actual: other.get_type(),
86			}),
87			(other, _) => Err(RoutineError::FunctionInvalidArgumentType {
88				function: ctx.fragment.clone(),
89				argument_index: 0,
90				expected: vec![Type::Time],
91				actual: other.get_type(),
92			}),
93		}
94	}
95}
96
97impl Function for TimeDiff {
98	fn kinds(&self) -> &[FunctionKind] {
99		&[FunctionKind::Scalar]
100	}
101}
reifydb_routine/function/time/diff.rs

reifydb_routine/function/time/
diff.rs
