Trait frame_support::traits::tokens::nonfungibles::InspectEnumerable

pub trait InspectEnumerable<AccountId>: Inspect<AccountId> {
    fn collections() -> Box<dyn Iterator<Item = Self::CollectionId>>;
    fn items(
        collection: &Self::CollectionId
    ) -> Box<dyn Iterator<Item = Self::ItemId>>;
    fn owned(
        who: &AccountId
    ) -> Box<dyn Iterator<Item = (Self::CollectionId, Self::ItemId)>>;
    fn owned_in_collection(
        collection: &Self::CollectionId,
        who: &AccountId
    ) -> Box<dyn Iterator<Item = Self::ItemId>>;
}

Interface for enumerating items in existence or owned by a given account over many collections of NFTs.

Required Methods

fn collections() -> Box<dyn Iterator<Item = Self::CollectionId>>

Returns an iterator of the collections in existence.

fn items(
    collection: &Self::CollectionId
) -> Box<dyn Iterator<Item = Self::ItemId>>

Returns an iterator of the items of a collection in existence.

fn owned(
    who: &AccountId
) -> Box<dyn Iterator<Item = (Self::CollectionId, Self::ItemId)>>

Returns an iterator of the items of all collections owned by who.

fn owned_in_collection(
    collection: &Self::CollectionId,
    who: &AccountId
) -> Box<dyn Iterator<Item = Self::ItemId>>

Returns an iterator of the items of collection owned by who.

Implementors