reifydb_function/duration/
months.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 DurationMonths;
14
15impl DurationMonths {
16	pub fn new() -> Self {
17		Self
18	}
19}
20
21fn extract_i64(data: &ColumnData, i: usize) -> Option<i64> {
22	match data {
23		ColumnData::Int1(c) => c.get(i).map(|&v| v as i64),
24		ColumnData::Int2(c) => c.get(i).map(|&v| v as i64),
25		ColumnData::Int4(c) => c.get(i).map(|&v| v as i64),
26		ColumnData::Int8(c) => c.get(i).copied(),
27		ColumnData::Int16(c) => c.get(i).map(|&v| v as i64),
28		ColumnData::Uint1(c) => c.get(i).map(|&v| v as i64),
29		ColumnData::Uint2(c) => c.get(i).map(|&v| v as i64),
30		ColumnData::Uint4(c) => c.get(i).map(|&v| v as i64),
31		ColumnData::Uint8(c) => c.get(i).map(|&v| v as i64),
32		ColumnData::Uint16(c) => c.get(i).map(|&v| v as i64),
33		_ => None,
34	}
35}
36
37fn is_integer_type(data: &ColumnData) -> bool {
38	matches!(
39		data,
40		ColumnData::Int1(_)
41			| ColumnData::Int2(_) | ColumnData::Int4(_)
42			| ColumnData::Int8(_) | ColumnData::Int16(_)
43			| ColumnData::Uint1(_)
44			| ColumnData::Uint2(_)
45			| ColumnData::Uint4(_)
46			| ColumnData::Uint8(_)
47			| ColumnData::Uint16(_)
48	)
49}
50
51impl ScalarFunction for DurationMonths {
52	fn scalar(&self, ctx: ScalarFunctionContext) -> ScalarFunctionResult<ColumnData> {
53		if let Some(result) = propagate_options(self, &ctx) {
54			return result;
55		}
56		let columns = ctx.columns;
57		let row_count = ctx.row_count;
58
59		if columns.len() != 1 {
60			return Err(ScalarFunctionError::ArityMismatch {
61				function: ctx.fragment.clone(),
62				expected: 1,
63				actual: columns.len(),
64			});
65		}
66
67		let col = columns.get(0).unwrap();
68
69		if !is_integer_type(col.data()) {
70			return Err(ScalarFunctionError::InvalidArgumentType {
71				function: ctx.fragment.clone(),
72				argument_index: 0,
73				expected: vec![
74					Type::Int1,
75					Type::Int2,
76					Type::Int4,
77					Type::Int8,
78					Type::Int16,
79					Type::Uint1,
80					Type::Uint2,
81					Type::Uint4,
82					Type::Uint8,
83					Type::Uint16,
84				],
85				actual: col.data().get_type(),
86			});
87		}
88
89		let mut container = TemporalContainer::with_capacity(row_count);
90
91		for i in 0..row_count {
92			if let Some(val) = extract_i64(col.data(), i) {
93				container.push(Duration::from_months(val));
94			} else {
95				container.push_default();
96			}
97		}
98
99		Ok(ColumnData::Duration(container))
100	}
101
102	fn return_type(&self, _input_types: &[Type]) -> Type {
103		Type::Duration
104	}
105}
reifydb_function/duration/months.rs

reifydb_function/duration/
months.rs
