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
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*/
use rusqlite::{Connection, Transaction};
use sql_support::open_database::{self, ConnectionInitializer};
/// The current database schema version.
///
/// For any changes to the schema [`SQL`], please make sure to:
///
/// 1. Bump this version.
/// 2. Add a migration from the old version to the new version in
/// [`RelevancyConnectionInitializer::upgrade_from`].
pub const VERSION: u32 = 13;
/// The current database schema.
pub const SQL: &str = "
CREATE TABLE url_interest(
url_hash BLOB NOT NULL,
interest_code INTEGER NOT NULL,
PRIMARY KEY (url_hash, interest_code)
) WITHOUT ROWID;
";
/// Initializes an SQLite connection to the Relevancy database, performing
/// migrations as needed.
pub struct RelevancyConnectionInitializer;
impl ConnectionInitializer for RelevancyConnectionInitializer {
const NAME: &'static str = "relevancy db";
const END_VERSION: u32 = VERSION;
fn prepare(&self, conn: &Connection, _db_empty: bool) -> open_database::Result<()> {
let initial_pragmas = "
-- Use in-memory storage for TEMP tables.
PRAGMA temp_store = 2;
PRAGMA journal_mode = WAL;
PRAGMA foreign_keys = ON;
";
conn.execute_batch(initial_pragmas)?;
Ok(())
}
fn init(&self, db: &Transaction<'_>) -> open_database::Result<()> {
Ok(db.execute_batch(SQL)?)
}
fn upgrade_from(&self, _db: &Transaction<'_>, version: u32) -> open_database::Result<()> {
Err(open_database::Error::IncompatibleVersion(version))
}
}
|
