reifydb_routine/function/text/
repeat.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::{constraint::bytes::MaxBytes, container::utf8::Utf8Container, r#type::Type};
6
7use crate::routine::{Function, FunctionKind, Routine, RoutineInfo, context::FunctionContext, error::RoutineError};
8
9pub struct TextRepeat {
10	info: RoutineInfo,
11}
12
13impl Default for TextRepeat {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl TextRepeat {
20	pub fn new() -> Self {
21		Self {
22			info: RoutineInfo::new("text::repeat"),
23		}
24	}
25}
26
27impl<'a> Routine<FunctionContext<'a>> for TextRepeat {
28	fn info(&self) -> &RoutineInfo {
29		&self.info
30	}
31
32	fn return_type(&self, _input_types: &[Type]) -> Type {
33		Type::Utf8
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 str_col = &args[0];
46		let count_col = &args[1];
47
48		let (str_data, str_bv) = str_col.unwrap_option();
49		let (count_data, count_bv) = count_col.unwrap_option();
50		let row_count = str_data.len();
51
52		match str_data {
53			ColumnBuffer::Utf8 {
54				container: str_container,
55				..
56			} => {
57				let mut result_data = Vec::with_capacity(row_count);
58
59				for i in 0..row_count {
60					if !str_container.is_defined(i) {
61						result_data.push(String::new());
62						continue;
63					}
64
65					let count = match count_data {
66						ColumnBuffer::Int1(c) => c.get(i).map(|&v| v as i64),
67						ColumnBuffer::Int2(c) => c.get(i).map(|&v| v as i64),
68						ColumnBuffer::Int4(c) => c.get(i).map(|&v| v as i64),
69						ColumnBuffer::Int8(c) => c.get(i).copied(),
70						ColumnBuffer::Uint1(c) => c.get(i).map(|&v| v as i64),
71						ColumnBuffer::Uint2(c) => c.get(i).map(|&v| v as i64),
72						ColumnBuffer::Uint4(c) => c.get(i).map(|&v| v as i64),
73						_ => {
74							return Err(RoutineError::FunctionInvalidArgumentType {
75								function: ctx.fragment.clone(),
76								argument_index: 1,
77								expected: vec![
78									Type::Int1,
79									Type::Int2,
80									Type::Int4,
81									Type::Int8,
82								],
83								actual: count_data.get_type(),
84							});
85						}
86					};
87
88					match count {
89						Some(n) if n >= 0 => {
90							let s = str_container.get(i).unwrap();
91							result_data.push(s.repeat(n as usize));
92						}
93						Some(_) => {
94							result_data.push(String::new());
95						}
96						None => {
97							result_data.push(String::new());
98						}
99					}
100				}
101
102				let result_col_data = ColumnBuffer::Utf8 {
103					container: Utf8Container::new(result_data),
104					max_bytes: MaxBytes::MAX,
105				};
106
107				let combined_bv = match (str_bv, count_bv) {
108					(Some(b), Some(e)) => Some(b.and(e)),
109					(Some(b), None) => Some(b.clone()),
110					(None, Some(e)) => Some(e.clone()),
111					(None, None) => None,
112				};
113
114				let final_data = match combined_bv {
115					Some(bv) => ColumnBuffer::Option {
116						inner: Box::new(result_col_data),
117						bitvec: bv,
118					},
119					None => result_col_data,
120				};
121				Ok(Columns::new(vec![ColumnWithName::new(ctx.fragment.clone(), final_data)]))
122			}
123			other => Err(RoutineError::FunctionInvalidArgumentType {
124				function: ctx.fragment.clone(),
125				argument_index: 0,
126				expected: vec![Type::Utf8],
127				actual: other.get_type(),
128			}),
129		}
130	}
131}
132
133impl Function for TextRepeat {
134	fn kinds(&self) -> &[FunctionKind] {
135		&[FunctionKind::Scalar]
136	}
137}
reifydb_routine/function/text/repeat.rs

reifydb_routine/function/text/
repeat.rs
