reifydb_routine/function/time/
trunc.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, time::Time, r#type::Type};
6
7use crate::routine::{Function, FunctionKind, Routine, RoutineInfo, context::FunctionContext, error::RoutineError};
8
9pub struct TimeTrunc {
10	info: RoutineInfo,
11}
12
13impl Default for TimeTrunc {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl TimeTrunc {
20	pub fn new() -> Self {
21		Self {
22			info: RoutineInfo::new("time::trunc"),
23		}
24	}
25}
26
27impl<'a> Routine<FunctionContext<'a>> for TimeTrunc {
28	fn info(&self) -> &RoutineInfo {
29		&self.info
30	}
31
32	fn return_type(&self, _input_types: &[Type]) -> Type {
33		Type::Time
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 time_col = &args[0];
46		let prec_col = &args[1];
47
48		let (time_data, time_bv) = time_col.unwrap_option();
49		let (prec_data, _) = prec_col.unwrap_option();
50
51		match (time_data, prec_data) {
52			(
53				ColumnBuffer::Time(time_container),
54				ColumnBuffer::Utf8 {
55					container: prec_container,
56					..
57				},
58			) => {
59				let row_count = time_data.len();
60				let mut container = TemporalContainer::with_capacity(row_count);
61
62				for i in 0..row_count {
63					match (time_container.get(i), prec_container.is_defined(i)) {
64						(Some(t), true) => {
65							let precision = prec_container.get(i).unwrap();
66							let truncated = match precision {
67								"hour" => Time::new(t.hour(), 0, 0, 0),
68								"minute" => Time::new(t.hour(), t.minute(), 0, 0),
69								"second" => {
70									Time::new(t.hour(), t.minute(), t.second(), 0)
71								}
72								other => {
73									return Err(
74										RoutineError::FunctionExecutionFailed {
75											function: ctx.fragment.clone(),
76											reason: format!(
77												"invalid precision: '{}'",
78												other
79											),
80										},
81									);
82								}
83							};
84							match truncated {
85								Some(val) => container.push(val),
86								None => container.push_default(),
87							}
88						}
89						_ => container.push_default(),
90					}
91				}
92
93				let mut result_data = ColumnBuffer::Time(container);
94				if let Some(bv) = time_bv {
95					result_data = ColumnBuffer::Option {
96						inner: Box::new(result_data),
97						bitvec: bv.clone(),
98					};
99				}
100				Ok(Columns::new(vec![ColumnWithName::new(ctx.fragment.clone(), result_data)]))
101			}
102			(ColumnBuffer::Time(_), other) => Err(RoutineError::FunctionInvalidArgumentType {
103				function: ctx.fragment.clone(),
104				argument_index: 1,
105				expected: vec![Type::Utf8],
106				actual: other.get_type(),
107			}),
108			(other, _) => Err(RoutineError::FunctionInvalidArgumentType {
109				function: ctx.fragment.clone(),
110				argument_index: 0,
111				expected: vec![Type::Time],
112				actual: other.get_type(),
113			}),
114		}
115	}
116}
117
118impl Function for TimeTrunc {
119	fn kinds(&self) -> &[FunctionKind] {
120		&[FunctionKind::Scalar]
121	}
122}
reifydb_routine/function/time/trunc.rs

reifydb_routine/function/time/
trunc.rs
