Struct Transaction 

pub struct Transaction<K, V>
where
    K: Ord + Clone + Debug + Sync + Send + 'static,
    V: Eq + Clone + Debug + Sync + Send + 'static,
{ /* private fields */ }

A serializable snapshot isolated database transaction

Implementations

impl<K, V> Transaction<K, V>

where K: Ord + Clone + Debug + Sync + Send + 'static, V: Eq + Clone + Debug + Sync + Send + 'static,

pub fn closed(&self) -> bool

Check if the transaction is closed

pub fn cancel(&mut self) -> Result<(), Error>

Cancel the transaction and rollback any changes

pub fn commit(&mut self) -> Result<(), Error>

Commit the transaction and store all changes

pub fn exists<Q>(&self, key: Q) -> Result<bool, Error>

where Q: Borrow<K>,

Check if a key exists in the database

pub fn get<Q>(&self, key: Q) -> Result<Option<V>, Error>

where Q: Borrow<K>,

Fetch a key from the database

pub fn set<Q>(&mut self, key: Q, val: V) -> Result<(), Error>

where Q: Into<K>,

Insert or update a key in the database

pub fn put<Q>(&mut self, key: Q, val: V) -> Result<(), Error>

where Q: Borrow<K> + Into<K>,

Insert a key if it doesn’t exist in the database

pub fn putc<Q>(&mut self, key: Q, val: V, chk: Option<V>) -> Result<(), Error>

where Q: Borrow<K> + Into<K>,

Insert a key if it matches a value

pub fn del<Q>(&mut self, key: Q) -> Result<(), Error>

where Q: Borrow<K>,

Delete a key from the database

pub fn delc<Q>(&mut self, key: Q, chk: Option<V>) -> Result<(), Error>

where Q: Borrow<K> + Into<K>,

Delete a key if it matches a value

pub fn keys<Q>(&self, rng: Range<Q>, limit: usize) -> Result<Vec<K>, Error>

where Q: Into<K>,

Retrieve a range of keys from the databases

pub fn scan<Q>(&self, rng: Range<Q>, limit: usize) -> Result<Vec<(K, V)>, Error>

where Q: Into<K>,

Retrieve a range of key-value pairs from the databases