kermit-ds 0.1.1

Data structures used in Kermit
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

mod column_trie;
mod tree_trie;

use {clap::ValueEnum, std::str::FromStr};
pub use {column_trie::ColumnTrie, tree_trie::TreeTrie};

/// The available trie-based index structures for storing relations.
///
/// Used as a CLI argument to select which data structure backs the join.
#[derive(Copy, Clone, PartialEq, Eq, Debug, ValueEnum)]
pub enum IndexStructure {
    /// Column-oriented trie; see [`ColumnTrie`].
    ColumnTrie,
    /// Pointer-based trie; see [`TreeTrie`].
    TreeTrie,
}

impl FromStr for IndexStructure {
    type Err = String;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s {
            | "column_trie" => Ok(Self::ColumnTrie),
            | "tree_trie" => Ok(Self::TreeTrie),
            | _ => Err(format!("Invalid index structure: {}", s)),
        }
    }
}