Struct multiversx_sc::storage::mappers::BiDiMapper

pub struct BiDiMapper<SA, K, V>where
    SA: StorageMapperApi,
    K: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq,
    V: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq,{ /* private fields */ }

A bi-directional map, from values to ids and viceversa. The mapper is based on UnorderedSetMapper, reason why the remove is done by swap_remove

Implementations

impl<SA, K, V> BiDiMapper<SA, K, V>where SA: StorageMapperApi, K: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq, V: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq,

pub fn get_id(&self, value: &V) -> K

pub fn get_value(&self, id: &K) -> V

pub fn contains_id(&self, id: &K) -> bool

pub fn contains_value(&self, value: &V) -> bool

pub fn insert(&mut self, id: K, value: V) -> bool

pub fn remove_by_id(&mut self, id: &K) -> bool

pub fn remove_by_value(&mut self, value: &V) -> bool

pub fn remove_all_by_ids<I>(&mut self, iter: I)where I: IntoIterator<Item = K>,

pub fn remove_all_by_values<I>(&mut self, iter: I)where I: IntoIterator<Item = V>,

pub fn get_all_values(&self) -> Iter<'_, SA, V>

pub fn get_all_ids(&self) -> Iter<'_, SA, K>

pub fn iter(&self) -> Iter<'_, SA, K, V>

pub fn is_empty(&self) -> bool

pub fn len(&self) -> usize

Trait Implementations

impl<'a, SA, K, V> IntoIterator for &'a BiDiMapper<SA, K, V>where SA: StorageMapperApi, K: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq, V: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq,

type Item = (K, V)

The type of the elements being iterated over.

type IntoIter = Iter<'a, SA, K, V>

Which kind of iterator are we turning this into?

fn into_iter(self) -> Self::IntoIter

Creates an iterator from a value.

impl<SA, K, V> StorageMapper<SA> for BiDiMapper<SA, K, V>where SA: StorageMapperApi, K: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq, V: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq,

fn new(base_key: StorageKey<SA>) -> Self

Will be called automatically by the #[storage_mapper] annotation generated code.

impl<SA, K, V> TopEncodeMulti for BiDiMapper<SA, K, V>where SA: StorageMapperApi, K: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq, V: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq,

fn multi_encode_or_handle_err<O, H>( &self, output: &mut O, h: H ) -> Result<(), H::HandledErr>where O: TopEncodeMultiOutput, H: EncodeErrorHandler,

Version of top_encode that can handle errors as soon as they occur. For instance in can exit immediately and make sure that if it returns, it is a success. By not deferring error handling, this can lead to somewhat smaller bytecode.

fn multi_encode<O>(&self, output: &mut O) -> Result<(), EncodeError>where O: TopEncodeMultiOutput,

Attempt to serialize the value to ouput.

impl<SA, K, V> TypeAbi for BiDiMapper<SA, K, V>where SA: StorageMapperApi, K: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq + TypeAbi, V: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq + TypeAbi,

fn type_name() -> TypeName

fn provide_type_descriptions<TDC: TypeDescriptionContainer>( accumulator: &mut TDC )

A type can provide more than its own description. For instance, a struct can also provide the descriptions of the type of its fields. TypeAbi doesn’t care for the exact accumulator type, which is abstracted by the TypeDescriptionContainer trait.

impl<SA, K, V> CodecFrom<BiDiMapper<SA, K, V>> for MultiValueEncoded<SA, MultiValue2<K, V>>where SA: StorageMapperApi, K: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq, V: TopEncode + TopDecode + NestedEncode + NestedDecode + 'static + Default + PartialEq,