Struct TransferChain 

pub struct TransferChain {
    pub passport_id: PassportId,
    pub original_operator: ResponsibleOperator,
    pub transfers: Vec<TransferRecord>,
}

The complete history of responsibility transfers for a DPP.

Maintained as an append-only log. Once a transfer is completed, it cannot be modified or removed.

Fields

passport_id: PassportId

The passport this chain belongs to.

original_operator: ResponsibleOperator

The original responsible operator (at first publication).

transfers: Vec<TransferRecord>

Ordered list of transfer events (oldest first).

Implementations

impl TransferChain

pub fn new( passport_id: PassportId, original_operator: ResponsibleOperator, ) -> Self

Create a new chain with an initial operator and no transfers.

pub fn current_operator(&self) -> &ResponsibleOperator

Returns the current responsible operator.

If no completed transfers exist, returns the original operator. Otherwise, returns the to_operator of the most recent completed transfer.

pub fn transfer_count(&self) -> usize

Returns the total number of completed transfers.

pub fn initiate_transfer( &mut self, record: TransferRecord, ) -> Result<(), TransferError>

Append a new transfer record to the chain.

Validates that:

• The from_operator matches the current responsible operator.
• No other transfer is currently pending (initiated but not completed/cancelled).

Trait Implementations

impl Clone for TransferChain

fn clone(&self) -> TransferChain

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for TransferChain

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for TransferChain

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for TransferChain

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.