reifydb_routine/function/time/
trunc.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, time::Time, r#type::Type};
6
7use crate::function::{Function, FunctionCapability, FunctionContext, FunctionInfo, error::FunctionError};
8
9pub struct TimeTrunc {
10	info: FunctionInfo,
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: FunctionInfo::new("time::trunc"),
23		}
24	}
25}
26
27impl Function for TimeTrunc {
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::Time
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 time_col = &args[0];
50		let prec_col = &args[1];
51
52		let (time_data, time_bv) = time_col.data().unwrap_option();
53		let (prec_data, _) = prec_col.data().unwrap_option();
54
55		match (time_data, prec_data) {
56			(
57				ColumnData::Time(time_container),
58				ColumnData::Utf8 {
59					container: prec_container,
60					..
61				},
62			) => {
63				let row_count = time_data.len();
64				let mut container = TemporalContainer::with_capacity(row_count);
65
66				for i in 0..row_count {
67					match (time_container.get(i), prec_container.is_defined(i)) {
68						(Some(t), true) => {
69							let precision = &prec_container[i];
70							let truncated = match precision.as_str() {
71								"hour" => Time::new(t.hour(), 0, 0, 0),
72								"minute" => Time::new(t.hour(), t.minute(), 0, 0),
73								"second" => {
74									Time::new(t.hour(), t.minute(), t.second(), 0)
75								}
76								other => {
77									return Err(FunctionError::ExecutionFailed {
78										function: ctx.fragment.clone(),
79										reason: format!(
80											"invalid precision: '{}'",
81											other
82										),
83									});
84								}
85							};
86							match truncated {
87								Some(val) => container.push(val),
88								None => container.push_default(),
89							}
90						}
91						_ => container.push_default(),
92					}
93				}
94
95				let mut result_data = ColumnData::Time(container);
96				if let Some(bv) = time_bv {
97					result_data = ColumnData::Option {
98						inner: Box::new(result_data),
99						bitvec: bv.clone(),
100					};
101				}
102				Ok(Columns::new(vec![Column::new(ctx.fragment.clone(), result_data)]))
103			}
104			(ColumnData::Time(_), other) => Err(FunctionError::InvalidArgumentType {
105				function: ctx.fragment.clone(),
106				argument_index: 1,
107				expected: vec![Type::Utf8],
108				actual: other.get_type(),
109			}),
110			(other, _) => Err(FunctionError::InvalidArgumentType {
111				function: ctx.fragment.clone(),
112				argument_index: 0,
113				expected: vec![Type::Time],
114				actual: other.get_type(),
115			}),
116		}
117	}
118}
reifydb_routine/function/time/trunc.rs

reifydb_routine/function/time/
trunc.rs
