Trait cfxcore::db::Writable

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pub trait Writable {
    // Required methods
    fn write<T, R>(&mut self, col: u32, key: &dyn Key<T, Target = R>, value: &T)
       where T: Encodable,
             R: Deref<Target = [u8]>;
    fn delete<T, R>(&mut self, col: u32, key: &dyn Key<T, Target = R>)
       where T: Encodable,
             R: Deref<Target = [u8]>;

    // Provided methods
    fn write_with_cache<K, T, R>(
        &mut self,
        col: u32,
        cache: &mut dyn Cache<K, T>,
        key: K,
        value: T,
        policy: CacheUpdatePolicy
    )
       where K: Key<T, Target = R> + Hash + Eq,
             T: Encodable,
             R: Deref<Target = [u8]> { ... }
    fn extend_with_cache<K, T, R>(
        &mut self,
        col: u32,
        cache: &mut dyn Cache<K, T>,
        values: HashMap<K, T>,
        policy: CacheUpdatePolicy
    )
       where K: Key<T, Target = R> + Hash + Eq,
             T: Encodable,
             R: Deref<Target = [u8]> { ... }
    fn extend_with_option_cache<K, T, R>(
        &mut self,
        col: u32,
        cache: &mut dyn Cache<K, Option<T>>,
        values: HashMap<K, Option<T>>,
        policy: CacheUpdatePolicy
    )
       where K: Key<T, Target = R> + Hash + Eq,
             T: Encodable,
             R: Deref<Target = [u8]> { ... }
}
Expand description

Should be used to write value into database.

Required Methods§

source

fn write<T, R>(&mut self, col: u32, key: &dyn Key<T, Target = R>, value: &T)
where T: Encodable, R: Deref<Target = [u8]>,

Writes the value into the database.

source

fn delete<T, R>(&mut self, col: u32, key: &dyn Key<T, Target = R>)
where T: Encodable, R: Deref<Target = [u8]>,

Deletes key from the database.

Provided Methods§

source

fn write_with_cache<K, T, R>( &mut self, col: u32, cache: &mut dyn Cache<K, T>, key: K, value: T, policy: CacheUpdatePolicy )
where K: Key<T, Target = R> + Hash + Eq, T: Encodable, R: Deref<Target = [u8]>,

Writes the value into the database and updates the cache.

source

fn extend_with_cache<K, T, R>( &mut self, col: u32, cache: &mut dyn Cache<K, T>, values: HashMap<K, T>, policy: CacheUpdatePolicy )
where K: Key<T, Target = R> + Hash + Eq, T: Encodable, R: Deref<Target = [u8]>,

Writes the values into the database and updates the cache.

source

fn extend_with_option_cache<K, T, R>( &mut self, col: u32, cache: &mut dyn Cache<K, Option<T>>, values: HashMap<K, Option<T>>, policy: CacheUpdatePolicy )
where K: Key<T, Target = R> + Hash + Eq, T: Encodable, R: Deref<Target = [u8]>,

Writes and removes the values into the database and updates the cache.

Object Safety§

This trait is not object safe.

Implementations on Foreign Types§

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impl Writable for DBTransaction

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fn write<T, R>(&mut self, col: u32, key: &dyn Key<T, Target = R>, value: &T)
where T: Encodable, R: Deref<Target = [u8]>,

source§

fn delete<T, R>(&mut self, col: u32, key: &dyn Key<T, Target = R>)
where T: Encodable, R: Deref<Target = [u8]>,

Implementors§