Struct leveldb_rs::DBWriteBatch

pub struct DBWriteBatch { /* fields omitted */ }

A write batch holds a collection of updates to apply atomically to a database. Updates are applied in the order in which they are added to the write batch.

Methods

impl DBWriteBatch

fn new() -> Option<DBWriteBatch>

Create a new, empty write batch. Returns None if the underlying library call returns a null pointer.

fn put(&mut self, key: &[u8], val: &[u8])

Set the database entry for "key" to "value". See put() on DB for more information.

fn clear(&mut self)

Clear all updates buffered in this write batch.

fn delete(&mut self, key: &[u8])

If the database contains the given key, erase it. Otherwise, do nothing.

fn iterate<'a, F: 'a, G: 'a>(&'a self, put: F, delete: G) where
    F: FnMut(&'a [u8], &'a [u8]) + 'a,
    G: FnMut(&'a [u8]) + 'a, 

Iterate over the contents of the write batch by calling callbacks for each operation in the batch.

Trait Implementations

impl Drop for DBWriteBatch

fn drop(&mut self)

A method called when the value goes out of scope.