reifydb_core/key/
row_sequence.rs

1// SPDX-License-Identifier: Apache-2.0
2// Copyright (c) 2026 ReifyDB
3
4use reifydb_codec::key::{
5	deserializer::KeyDeserializer,
6	encoded::{EncodedKey, EncodedKeyRange},
7	serializer::KeySerializer,
8};
9
10use super::{EncodableKey, KeyKind};
11use crate::{
12	interface::catalog::shape::ShapeId,
13	key::catalog::{KeyDeserializerCatalogExt, KeySerializerCatalogExt},
14};
15
16#[derive(Debug, Clone, PartialEq)]
17pub struct RowSequenceKey {
18	pub shape: ShapeId,
19}
20
21impl EncodableKey for RowSequenceKey {
22	const KIND: KeyKind = KeyKind::RowSequence;
23
24	fn encode(&self) -> EncodedKey {
25		let mut serializer = KeySerializer::with_capacity(10);
26		serializer.extend_u8(Self::KIND as u8).extend_shape_id(self.shape);
27		serializer.to_encoded_key()
28	}
29
30	fn decode(key: &EncodedKey) -> Option<Self> {
31		let mut de = KeyDeserializer::from_bytes(key.as_slice());
32
33		let kind: KeyKind = de.read_u8().ok()?.try_into().ok()?;
34		if kind != Self::KIND {
35			return None;
36		}
37
38		let shape = de.read_shape_id().ok()?;
39
40		Some(Self {
41			shape,
42		})
43	}
44}
45
46impl RowSequenceKey {
47	pub fn encoded(shape: impl Into<ShapeId>) -> EncodedKey {
48		Self {
49			shape: shape.into(),
50		}
51		.encode()
52	}
53
54	pub fn full_scan() -> EncodedKeyRange {
55		EncodedKeyRange::start_end(Some(Self::sequence_start()), Some(Self::sequence_end()))
56	}
57
58	fn sequence_start() -> EncodedKey {
59		let mut serializer = KeySerializer::with_capacity(1);
60		serializer.extend_u8(Self::KIND as u8);
61		serializer.to_encoded_key()
62	}
63
64	fn sequence_end() -> EncodedKey {
65		let mut serializer = KeySerializer::with_capacity(1);
66		serializer.extend_u8(Self::KIND as u8 - 1);
67		serializer.to_encoded_key()
68	}
69}
70
71#[cfg(test)]
72pub mod tests {
73	use super::{EncodableKey, RowSequenceKey};
74	use crate::interface::catalog::shape::ShapeId;
75
76	#[test]
77	fn test_encode_decode() {
78		let key = RowSequenceKey {
79			shape: ShapeId::table(0xABCD),
80		};
81		let encoded = key.encode();
82		let expected = vec![0xF7, 0x01, 0x3F, 0x54, 0x32];
83		assert_eq!(encoded.as_slice(), expected);
84
85		let key = RowSequenceKey::decode(&encoded).unwrap();
86		assert_eq!(key.shape, ShapeId::table(0xABCD));
87	}
88}
reifydb_core/key/row_sequence.rs

reifydb_core/key/
row_sequence.rs
