reifydb-core 0.9.1

Core database interfaces and data structures for ReifyDB
Documentation 
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// SPDX-License-Identifier: Apache-2.0
// Copyright (c) 2026 ReifyDB

use std::fmt::Debug;

use crate::key::{
	operator::state::{GroupId, KeyspaceId},
	typed::layout::KeyLayout,
};

pub trait Keyspace: Copy + Debug + 'static {
	const ID: KeyspaceId;
	const NAME: &'static str;
	const RANGE_CACHED: bool;

	type GroupedKey: KeyLayout;
	type Suffix: KeyLayout;

	fn split(key: &Self::GroupedKey) -> (GroupId, Self::Suffix);

	fn join(group: GroupId, suffix: Self::Suffix) -> Self::GroupedKey;
}

pub const fn group_scoped<K: Keyspace>() -> bool {
	let key = <K::GroupedKey as KeyLayout>::COLUMNS;
	let suffix = <K::Suffix as KeyLayout>::COLUMNS;
	key.len() == suffix.len() + 1 && leads_on_group(key[0].name)
}

const fn leads_on_group(name: &str) -> bool {
	let bytes = name.as_bytes();
	bytes.len() == 5
		&& bytes[0] == b'g'
		&& bytes[1] == b'r'
		&& bytes[2] == b'o'
		&& bytes[3] == b'u'
		&& bytes[4] == b'p'
}