Struct mdl::bcache::Cache

pub struct Cache { /* fields omitted */ }

BTreeMap cache. This struct implements the Store trait so it can be used to cache Model structs A BTreeMap is used to store the data in memory. This struct implements clone so it can be shared between threads safely creating a clone

Methods

impl Cache

pub fn new() -> Result<Cache, Error>

Trait Implementations

impl Debug for Cache

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Clone for Cache

fn clone(&self) -> Cache

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Store for Cache

fn push(&self, db: &'static str, key: &str, value: Vec<u8>) -> Result<(), Error>

Stores the value in the database with the corresponding key

fn pull<F, T>(     &self,     db: &'static str,     key: &str,     formatter: F ) -> Result<T, Error> where     F: Fn(&[u8]) -> Result<T, Error>,

Retrieves the value in the database with the corresponding key Returns an error if the key doesn't exists

fn iter<F>(&self, db: &'static str, prefix: &str, f: F) -> Result<(), Error> where     F: Fn(&[u8]) -> Continue,

Iterates over all objects that starts with the prefix and run the function f. If f returns Continue(false) the iteration stops

fn rm(&self, db: &'static str, key: &str) -> Result<(), Error>

Remove the corresponding data in the database by key

fn all<F, T>(     &self,     db: &'static str,     prefix: &str,     formatter: F ) -> Result<Vec<T>, Error> where     F: Fn(&[u8]) -> Result<T, Error>,

Retrieves all items in the database that starts with the prefix key