Trait frame_support::traits::tokens::fungibles::MutateHold

pub trait MutateHold<AccountId>: InspectHold<AccountId> + Transfer<AccountId> {
    fn hold(
        asset: Self::AssetId, 
        who: &AccountId, 
        amount: Self::Balance
    ) -> DispatchResult;
    fn release(
        asset: Self::AssetId, 
        who: &AccountId, 
        amount: Self::Balance, 
        best_effort: bool
    ) -> Result<Self::Balance, DispatchError>;
    fn transfer_held(
        asset: Self::AssetId, 
        source: &AccountId, 
        dest: &AccountId, 
        amount: Self::Balance, 
        best_effort: bool, 
        on_hold: bool
    ) -> Result<Self::Balance, DispatchError>;
}

Trait for mutating a set of named fungible assets which can be placed on hold.

Required methods

fn hold(
    asset: Self::AssetId,
    who: &AccountId,
    amount: Self::Balance
) -> DispatchResult

Hold some funds in an account.

fn release(
    asset: Self::AssetId,
    who: &AccountId,
    amount: Self::Balance,
    best_effort: bool
) -> Result<Self::Balance, DispatchError>

Release some funds in an account from being on hold.

If best_effort is true, then the amount actually released and returned as the inner value of Ok may be smaller than the amount passed.

fn transfer_held(
    asset: Self::AssetId,
    source: &AccountId,
    dest: &AccountId,
    amount: Self::Balance,
    best_effort: bool,
    on_hold: bool
) -> Result<Self::Balance, DispatchError>

Transfer held funds into a destination account.

If on_hold is true, then the destination account must already exist and the assets transferred will still be on hold in the destination account. If not, then the destination account need not already exist, but must be creatable.

If best_effort is true, then an amount less than amount may be transferred without error.

The actual amount transferred is returned, or Err in the case of error and nothing is changed.

Implementors