Struct kvdb_web::Database

pub struct Database { /* fields omitted */ }

Database backed by both IndexedDB and in memory implementation.

Methods

impl Database

pub fn open(
    name: String,
    columns: u32
) -> impl Future<Output = Result<Database, Error>>

Opens the database with the given name, and the specified number of columns (not including the default one).

pub fn name(&self) -> &str

Get the database name.

pub fn version(&self) -> u32

Get the database version.

Trait Implementations

impl Drop for Database

fn drop(&mut self)

Executes the destructor for this type.

impl KeyValueDB for Database

fn get(&self, col: Option<u32>, key: &[u8]) -> Result<Option<DBValue>>

Get a value by key.

fn get_by_prefix(&self, col: Option<u32>, prefix: &[u8]) -> Option<Box<[u8]>>

Get a value by partial key. Only works for flushed data.

fn write_buffered(&self, transaction: DBTransaction)

Write a transaction of changes to the buffer.

fn flush(&self) -> Result<()>

Flush all buffered data.

fn iter<'a>(
    &'a self,
    col: Option<u32>
) -> Box<dyn Iterator<Item = (Box<[u8]>, Box<[u8]>)> + 'a>

Iterate over flushed data for a given column.

fn iter_from_prefix<'a>(
    &'a self,
    col: Option<u32>,
    prefix: &'a [u8]
) -> Box<dyn Iterator<Item = (Box<[u8]>, Box<[u8]>)> + 'a>

Iterate over flushed data for a given column, starting from a given prefix.

fn restore(&self, _new_db: &str) -> Result<()>

Attempt to replace this database with a new one located at the given path.

fn transaction(&self) -> DBTransaction

Helper to create a new transaction.

fn write(&self, transaction: DBTransaction) -> Result<(), Error>

Write a transaction of changes to the backing store.