Trait fuel_core_storage::blueprint::sparse::PrimaryKey

pub trait PrimaryKey {
    type InputKey: ?Sized;
    type OutputKey: ?Sized;

    // Required method
    fn primary_key(key: &Self::InputKey) -> &Self::OutputKey;
}

The trait that allows to convert the key of the table into the key of the metadata table. If the key comprises several entities, it is possible to build a Merkle tree over different primary keys. The trait defines the key over which to build an SMT.

Required Associated Types

type InputKey: ?Sized

The storage key of the table.

type OutputKey: ?Sized

The extracted primary key.

Required Methods

fn primary_key(key: &Self::InputKey) -> &Self::OutputKey

Converts the key of the table into the primary key of the metadata table.

Object Safety

This trait is not object safe.

Implementors

impl PrimaryKey for fuel_core_storage::structured_storage::balances::KeyConverter

type InputKey = <ContractsAssets as Mappable>::Key

type OutputKey = <ContractsAssetsMerkleMetadata as Mappable>::Key

impl PrimaryKey for fuel_core_storage::structured_storage::state::KeyConverter

type InputKey = <ContractsState as Mappable>::Key

type OutputKey = <ContractsStateMerkleMetadata as Mappable>::Key