reifydb_routine/function/text/
count.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::r#type::Type;
6
7use crate::routine::{Function, FunctionKind, Routine, RoutineInfo, context::FunctionContext, error::RoutineError};
8
9pub struct TextCount {
10	info: RoutineInfo,
11}
12
13impl Default for TextCount {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl TextCount {
20	pub fn new() -> Self {
21		Self {
22			info: RoutineInfo::new("text::count"),
23		}
24	}
25}
26
27impl<'a> Routine<FunctionContext<'a>> for TextCount {
28	fn info(&self) -> &RoutineInfo {
29		&self.info
30	}
31
32	fn return_type(&self, _input_types: &[Type]) -> Type {
33		Type::Int4
34	}
35
36	fn execute(&self, ctx: &mut FunctionContext<'a>, args: &Columns) -> Result<Columns, RoutineError> {
37		if args.len() != 1 {
38			return Err(RoutineError::FunctionArityMismatch {
39				function: ctx.fragment.clone(),
40				expected: 1,
41				actual: args.len(),
42			});
43		}
44
45		let column = &args[0];
46		let (data, bitvec) = column.unwrap_option();
47		let row_count = data.len();
48
49		match data {
50			ColumnBuffer::Utf8 {
51				container,
52				..
53			} => {
54				let mut result = Vec::with_capacity(row_count);
55				let mut res_bitvec = Vec::with_capacity(row_count);
56
57				for i in 0..row_count {
58					if container.is_defined(i) {
59						let text = container.get(i).unwrap();
60						result.push(text.chars().count() as i32);
61						res_bitvec.push(true);
62					} else {
63						result.push(0);
64						res_bitvec.push(false);
65					}
66				}
67
68				let result_data = ColumnBuffer::int4_with_bitvec(result, res_bitvec);
69				let final_data = match bitvec {
70					Some(bv) => ColumnBuffer::Option {
71						inner: Box::new(result_data),
72						bitvec: bv.clone(),
73					},
74					None => result_data,
75				};
76				Ok(Columns::new(vec![ColumnWithName::new(ctx.fragment.clone(), final_data)]))
77			}
78			other => Err(RoutineError::FunctionInvalidArgumentType {
79				function: ctx.fragment.clone(),
80				argument_index: 0,
81				expected: vec![Type::Utf8],
82				actual: other.get_type(),
83			}),
84		}
85	}
86}
87
88impl Function for TextCount {
89	fn kinds(&self) -> &[FunctionKind] {
90		&[FunctionKind::Scalar]
91	}
92}
reifydb_routine/function/text/count.rs

reifydb_routine/function/text/
count.rs
