luci/core/
field_id.rs

1/// Index into the schema's field list.
2///
3/// Assigned sequentially when fields are added to the schema. `u16` limits
4/// to 65,535 fields per index — well beyond practical use (Elasticsearch
5/// recommends < 1,000). See [[architecture-api-surface#Schema and Mappings]].
6#[derive(Clone, Copy, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
7pub struct FieldId(pub u16);
8
9impl FieldId {
10    pub const fn new(id: u16) -> Self {
11        Self(id)
12    }
13
14    pub const fn as_u16(self) -> u16 {
15        self.0
16    }
17}
18
19impl std::fmt::Display for FieldId {
20    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
21        write!(f, "{}", self.0)
22    }
23}
24
25#[cfg(test)]
26mod tests {
27    use super::*;
28
29    #[test]
30    fn ordering() {
31        assert!(FieldId(0) < FieldId(1));
32        assert!(FieldId(1) < FieldId(100));
33    }
34
35    #[test]
36    fn as_u16_round_trips() {
37        assert_eq!(FieldId::new(7).as_u16(), 7);
38    }
39}
luci/core/field_id.rs

luci/core/
field_id.rs
