Struct OpfsSAHPoolUtil

pub struct OpfsSAHPoolUtil { /* private fields */ }

A OpfsSAHPoolUtil instance is exposed to clients in order to manipulate an OpfsSAHPool object without directly exposing that object and allowing for some semantic changes compared to that class.

Implementations

impl OpfsSAHPoolUtil

pub async fn add_capacity(&self, n: u32) -> Result<u32, OpfsSAHError>

Adds n entries to the current pool.

pub async fn reduce_capacity(&self, n: u32) -> Result<u32, OpfsSAHError>

Removes up to n entries from the pool, with the caveat that it can only remove currently-unused entries.

pub fn get_capacity(&self) -> u32

Returns the number of files currently contained in the SAH pool.

pub async fn reserve_minimum_capacity( &self, min: u32, ) -> Result<(), OpfsSAHError>

Removes up to n entries from the pool, with the caveat that it can only remove currently-unused entries.

impl OpfsSAHPoolUtil

pub fn import_db(&self, path: &str, bytes: &[u8]) -> Result<(), OpfsSAHError>

Imports the contents of an SQLite database, provided as a byte array under the given name, overwriting any existing content.

If the database is imported with WAL mode enabled, it will be forced to write back to legacy mode, see https://sqlite.org/forum/forumpost/67882c5b04.

If the imported DB is encrypted, use import_db_unchecked instead.

pub fn import_db_unchecked( &self, path: &str, bytes: &[u8], ) -> Result<(), OpfsSAHError>

import_db without checking, can be used to import encrypted database.

pub fn export_db(&self, path: &str) -> Result<Vec<u8>, OpfsSAHError>

Export the database.

pub fn delete_db(&self, path: &str) -> Result<bool, OpfsSAHError>

Delete the specified database, please make sure that the database is closed.

pub async fn clear_all(&self) -> Result<(), OpfsSAHError>

Delete all database, please make sure that all database is closed.

pub fn exists(&self, path: &str) -> Result<bool, OpfsSAHError>

Does the database exists.

pub fn list(&self) -> Vec<String>

List all file paths.

pub fn count(&self) -> u32

Number of files.