Trait ethcore::db::Writable
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[src]
pub trait Writable { fn write<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target=R>, value: &T) where T: Encodable, R: Deref<Target=[u8]>; fn delete<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target=R>) where T: Encodable, R: Deref<Target=[u8]>; fn write_with_cache<K, T, R>(&mut self,
col: Option<u32>,
cache: &mut 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: Option<u32>,
cache: &mut 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: Option<u32>,
cache: &mut 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]> { ... } }
Should be used to write value into database.
Required Methods
fn write<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target=R>, value: &T) where T: Encodable, R: Deref<Target=[u8]>
Writes the value into the database.
fn delete<T, R>(&mut self, col: Option<u32>, key: &Key<T, Target=R>) where T: Encodable, R: Deref<Target=[u8]>
Deletes key from the databse.
Provided Methods
fn write_with_cache<K, T, R>(&mut self,
col: Option<u32>,
cache: &mut Cache<K, T>,
key: K,
value: T,
policy: CacheUpdatePolicy) where K: Key<T, Target=R> + Hash + Eq, T: Encodable, R: Deref<Target=[u8]>
col: Option<u32>,
cache: &mut 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.
fn extend_with_cache<K, T, R>(&mut self,
col: Option<u32>,
cache: &mut Cache<K, T>,
values: HashMap<K, T>,
policy: CacheUpdatePolicy) where K: Key<T, Target=R> + Hash + Eq, T: Encodable, R: Deref<Target=[u8]>
col: Option<u32>,
cache: &mut 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.
fn extend_with_option_cache<K, T, R>(&mut self,
col: Option<u32>,
cache: &mut 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]>
col: Option<u32>,
cache: &mut 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.
Implementors
impl Writable for DBTransaction