rustlite_core/
transaction.rs

1//! Transaction management module.
2//!
3//! This module will provide ACID transaction support using MVCC (Multi-Version Concurrency Control).
4//! Planned for v0.5+.
5
6use crate::Result;
7
8/// Transaction isolation levels
9#[derive(Debug, Clone, Copy, PartialEq, Eq)]
10pub enum IsolationLevel {
11    /// Read uncommitted (lowest isolation)
12    ReadUncommitted,
13    /// Read committed
14    ReadCommitted,
15    /// Repeatable read
16    RepeatableRead,
17    /// Serializable (highest isolation)
18    Serializable,
19}
20
21/// A database transaction (placeholder)
22#[allow(dead_code)]
23pub struct Transaction {
24    // Lightweight in-memory placeholder state for v0.1-v0.4.
25    committed: bool,
26}
27
28impl Transaction {
29    /// Begin a new transaction
30    #[allow(dead_code)]
31    pub fn begin(_isolation: IsolationLevel) -> Result<Self> {
32        // Lightweight placeholder: create an in-memory transaction object.
33        Ok(Transaction { committed: false })
34    }
35
36    /// Commit the transaction
37    #[allow(dead_code)]
38    pub fn commit(self) -> Result<()> {
39        // No real persistence yet; mark as committed and succeed.
40        let _ = self;
41        Ok(())
42    }
43
44    /// Rollback the transaction
45    #[allow(dead_code)]
46    pub fn rollback(self) -> Result<()> {
47        // No-op for rollback in the in-memory placeholder.
48        let _ = self;
49        Ok(())
50    }
51}
rustlite_core/transaction.rs

rustlite_core/
transaction.rs
