reifydb_routine/function/date/
start_of_year.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, r#type::Type};
6
7use crate::function::{Function, FunctionCapability, FunctionContext, FunctionInfo, error::FunctionError};
8
9pub struct DateStartOfYear {
10	info: FunctionInfo,
11}
12
13impl Default for DateStartOfYear {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl DateStartOfYear {
20	pub fn new() -> Self {
21		Self {
22			info: FunctionInfo::new("date::start_of_year"),
23		}
24	}
25}
26
27impl Function for DateStartOfYear {
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::Date
38	}
39
40	fn execute(&self, ctx: &FunctionContext, args: &Columns) -> Result<Columns, FunctionError> {
41		if args.len() != 1 {
42			return Err(FunctionError::ArityMismatch {
43				function: ctx.fragment.clone(),
44				expected: 1,
45				actual: args.len(),
46			});
47		}
48
49		let column = &args[0];
50		let (data, bitvec) = column.data().unwrap_option();
51		let row_count = data.len();
52
53		let result_data = match data {
54			ColumnData::Date(container) => {
55				let mut result = TemporalContainer::with_capacity(row_count);
56
57				for i in 0..row_count {
58					if let Some(date) = container.get(i) {
59						match Date::new(date.year(), 1, 1) {
60							Some(d) => result.push(d),
61							None => result.push_default(),
62						}
63					} else {
64						result.push_default();
65					}
66				}
67
68				ColumnData::Date(result)
69			}
70			other => {
71				return Err(FunctionError::InvalidArgumentType {
72					function: ctx.fragment.clone(),
73					argument_index: 0,
74					expected: vec![Type::Date],
75					actual: other.get_type(),
76				});
77			}
78		};
79
80		let final_data = if let Some(bv) = bitvec {
81			ColumnData::Option {
82				inner: Box::new(result_data),
83				bitvec: bv.clone(),
84			}
85		} else {
86			result_data
87		};
88
89		Ok(Columns::new(vec![Column::new(ctx.fragment.clone(), final_data)]))
90	}
91}
reifydb_routine/function/date/start_of_year.rs

reifydb_routine/function/date/
start_of_year.rs
