pub struct Plain<KeyCodec, ValueCodec> { /* private fields */ }
Expand description
The type that represents the plain blueprint.
The KeyCodec
and ValueCodec
are used to encode/decode the key and value.
Trait Implementations§
Source§impl<M, S, KeyCodec, ValueCodec> BlueprintInspect<M, S> for Plain<KeyCodec, ValueCodec>where
M: Mappable,
S: KeyValueInspect,
KeyCodec: Encode<M::Key> + Decode<M::OwnedKey>,
ValueCodec: Encode<M::Value> + Decode<M::OwnedValue>,
impl<M, S, KeyCodec, ValueCodec> BlueprintInspect<M, S> for Plain<KeyCodec, ValueCodec>where
M: Mappable,
S: KeyValueInspect,
KeyCodec: Encode<M::Key> + Decode<M::OwnedKey>,
ValueCodec: Encode<M::Value> + Decode<M::OwnedValue>,
Source§type ValueCodec = ValueCodec
type ValueCodec = ValueCodec
The codec used to encode and decode storage value.
Source§fn exists(storage: &S, key: &M::Key, column: S::Column) -> StorageResult<bool>
fn exists(storage: &S, key: &M::Key, column: S::Column) -> StorageResult<bool>
Checks if the value exists in the storage.
Source§fn size_of_value(
storage: &S,
key: &M::Key,
column: S::Column,
) -> StorageResult<Option<usize>>
fn size_of_value( storage: &S, key: &M::Key, column: S::Column, ) -> StorageResult<Option<usize>>
Returns the size of the value in the storage.
Source§fn get(
storage: &S,
key: &M::Key,
column: S::Column,
) -> StorageResult<Option<M::OwnedValue>>
fn get( storage: &S, key: &M::Key, column: S::Column, ) -> StorageResult<Option<M::OwnedValue>>
Returns the value from the storage.
Source§impl<M, S, KeyCodec, ValueCodec> BlueprintMutate<M, S> for Plain<KeyCodec, ValueCodec>where
M: Mappable,
S: KeyValueMutate,
KeyCodec: Encode<M::Key> + Decode<M::OwnedKey>,
ValueCodec: Encode<M::Value> + Decode<M::OwnedValue>,
impl<M, S, KeyCodec, ValueCodec> BlueprintMutate<M, S> for Plain<KeyCodec, ValueCodec>where
M: Mappable,
S: KeyValueMutate,
KeyCodec: Encode<M::Key> + Decode<M::OwnedKey>,
ValueCodec: Encode<M::Value> + Decode<M::OwnedValue>,
Source§fn put(
storage: &mut S,
key: &M::Key,
column: S::Column,
value: &M::Value,
) -> StorageResult<()>
fn put( storage: &mut S, key: &M::Key, column: S::Column, value: &M::Value, ) -> StorageResult<()>
Puts the key-value pair into the storage.
Source§fn replace(
storage: &mut S,
key: &M::Key,
column: S::Column,
value: &M::Value,
) -> StorageResult<Option<M::OwnedValue>>
fn replace( storage: &mut S, key: &M::Key, column: S::Column, value: &M::Value, ) -> StorageResult<Option<M::OwnedValue>>
Puts the key-value pair into the storage and returns the old value.
Source§fn take(
storage: &mut S,
key: &M::Key,
column: S::Column,
) -> StorageResult<Option<M::OwnedValue>>
fn take( storage: &mut S, key: &M::Key, column: S::Column, ) -> StorageResult<Option<M::OwnedValue>>
Takes the value from the storage and returns it.
The value is removed from the storage.
Source§impl<Column, M, S, KeyCodec, ValueCodec> SupportsBatching<M, S> for Plain<KeyCodec, ValueCodec>where
Column: StorageColumn,
S: BatchOperations<Column = Column>,
M: TableWithBlueprint<Blueprint = Plain<KeyCodec, ValueCodec>, Column = Column>,
M::Blueprint: BlueprintMutate<M, S>,
impl<Column, M, S, KeyCodec, ValueCodec> SupportsBatching<M, S> for Plain<KeyCodec, ValueCodec>where
Column: StorageColumn,
S: BatchOperations<Column = Column>,
M: TableWithBlueprint<Blueprint = Plain<KeyCodec, ValueCodec>, Column = Column>,
M::Blueprint: BlueprintMutate<M, S>,
Source§fn init<'a, Iter>(
storage: &mut S,
column: S::Column,
set: Iter,
) -> StorageResult<()>
fn init<'a, Iter>( storage: &mut S, column: S::Column, set: Iter, ) -> StorageResult<()>
Initializes the storage with a bunch of key-value pairs.
In some cases, this method may be more performant than
Self::insert
.Auto Trait Implementations§
impl<KeyCodec, ValueCodec> Freeze for Plain<KeyCodec, ValueCodec>
impl<KeyCodec, ValueCodec> RefUnwindSafe for Plain<KeyCodec, ValueCodec>where
KeyCodec: RefUnwindSafe,
ValueCodec: RefUnwindSafe,
impl<KeyCodec, ValueCodec> Send for Plain<KeyCodec, ValueCodec>
impl<KeyCodec, ValueCodec> Sync for Plain<KeyCodec, ValueCodec>
impl<KeyCodec, ValueCodec> Unpin for Plain<KeyCodec, ValueCodec>
impl<KeyCodec, ValueCodec> UnwindSafe for Plain<KeyCodec, ValueCodec>where
KeyCodec: UnwindSafe,
ValueCodec: UnwindSafe,
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Source§fn iter_all_keys<M>(
&self,
direction: Option<IterDirection>,
) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘwhere
M: Mappable,
Self: IterableTable<M>,
fn iter_all_keys<M>(
&self,
direction: Option<IterDirection>,
) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘwhere
M: Mappable,
Self: IterableTable<M>,
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&self,
prefix: Option<P>,
) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘ
fn iter_all_by_prefix_keys<M, P>( &self, prefix: Option<P>, ) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘ
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&self,
start: Option<&M::Key>,
direction: Option<IterDirection>,
) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘwhere
M: Mappable,
Self: IterableTable<M>,
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&self,
start: Option<&M::Key>,
direction: Option<IterDirection>,
) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘwhere
M: Mappable,
Self: IterableTable<M>,
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&self,
prefix: Option<P>,
start: Option<&M::Key>,
direction: Option<IterDirection>,
) -> BoxedIter<'_, Result<M::OwnedKey>> ⓘ
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&self,
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M: Mappable,
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&self,
start: Option<&M::Key>,
direction: Option<IterDirection>,
) -> BoxedIter<'_, Result<(M::OwnedKey, M::OwnedValue)>> ⓘwhere
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&self,
prefix: Option<P>,
start: Option<&M::Key>,
direction: Option<IterDirection>,
) -> BoxedIter<'_, Result<(M::OwnedKey, M::OwnedValue)>> ⓘ
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Returns an iterator over the all entries in the table with a prefix after a specific start key.
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