Struct MultiCounterColumn

pub struct MultiCounterColumn<Model: IModel, Column: Debug + Eq + PartialEq + Hash + Serialize + Default + for<'a> Deserialize<'a>> { /* private fields */ }

Implementations

impl<Model: IModel, Column: Debug + Eq + PartialEq + Hash + Serialize + Default + for<'d> Deserialize<'d>> MultiCounterColumn<Model, Column>

pub const fn new(prefix: u8) -> Self

pub fn increment( &self, model: &mut Model, column: &Column, ) -> Result<(), StorageError>

pub fn decrement( &self, model: &mut Model, column: &Column, ) -> Result<bool, StorageError>

returns true if the counter reached zero (and the key was removed from KVC store)

pub fn get( &self, model: &mut Model, column: &Column, ) -> Result<u64, StorageError>

pub fn get_all( &self, model: &mut Model, ) -> Result<HashMap<Column, u64>, StorageError>

Trait Implementations

impl<Model: IModel, Column: Debug + Eq + PartialEq + Hash + Serialize + Default + for<'d> Deserialize<'d>> IMultiValueColumn for MultiCounterColumn<Model, Column>

fn value_size(&self) -> Result<usize, StorageError>

fn prefix(&self) -> u8