Struct exonum_rocksdb::Snapshot

pub struct Snapshot<'a> { /* fields omitted */ }

A consistent view of the database at the point of creation.

extern crate tempdir;
extern crate exonum_rocksdb;

use exonum_rocksdb::{DB, IteratorMode};
use tempdir::TempDir;

let temp_dir = TempDir::new("storage1").unwrap();
let mut db = DB::open_default(temp_dir.path()).unwrap();
let snapshot = db.snapshot(); // Creates a longer-term snapshot of the DB
let mut iter = snapshot.iterator(IteratorMode::Start); // Make as many iterators as you'd like

Methods

impl<'a> Snapshot<'a>

pub fn new(db: &DB) -> Snapshot

Important traits for DBIterator

impl Iterator for DBIterator type Item = (Box<[u8]>, Box<[u8]>);

pub fn iterator(&self, mode: IteratorMode) -> DBIterator

pub fn iterator_cf(
    &self,
    cf_handle: ColumnFamily,
    mode: IteratorMode
) -> Result<DBIterator, Error>

pub fn raw_iterator(&self) -> DBRawIterator

pub fn raw_iterator_cf(
    &self,
    cf_handle: ColumnFamily
) -> Result<DBRawIterator, Error>

pub fn get(&self, key: &[u8]) -> Result<Option<DBVector>, Error>

pub fn get_cf(
    &self,
    cf: ColumnFamily,
    key: &[u8]
) -> Result<Option<DBVector>, Error>

Trait Implementations

impl<'a> Drop for Snapshot<'a>

fn drop(&mut self)

Executes the destructor for this type.