reifydb_routine/function/is/
none.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 IsNone {
10	info: RoutineInfo,
11}
12
13impl Default for IsNone {
14	fn default() -> Self {
15		Self::new()
16	}
17}
18
19impl IsNone {
20	pub fn new() -> Self {
21		Self {
22			info: RoutineInfo::new("is::none"),
23		}
24	}
25}
26
27impl<'a> Routine<FunctionContext<'a>> for IsNone {
28	fn info(&self) -> &RoutineInfo {
29		&self.info
30	}
31
32	fn return_type(&self, _input_types: &[Type]) -> Type {
33		Type::Boolean
34	}
35
36	fn propagates_options(&self) -> bool {
37		false
38	}
39
40	fn execute(&self, ctx: &mut FunctionContext<'a>, args: &Columns) -> Result<Columns, RoutineError> {
41		if args.len() != 1 {
42			return Err(RoutineError::FunctionArityMismatch {
43				function: ctx.fragment.clone(),
44				expected: 1,
45				actual: args.len(),
46			});
47		}
48
49		let column = &args[0];
50		let row_count = column.len();
51		let data: Vec<bool> = (0..row_count).map(|i| !column.is_defined(i)).collect();
52
53		Ok(Columns::new(vec![ColumnWithName::new(ctx.fragment.clone(), ColumnBuffer::bool(data))]))
54	}
55}
56
57impl Function for IsNone {
58	fn kinds(&self) -> &[FunctionKind] {
59		&[FunctionKind::Scalar]
60	}
61}
reifydb_routine/function/is/none.rs

reifydb_routine/function/is/
none.rs
