net.corda.core.node.services / UniquenessProvider

UniquenessProvider

interface UniquenessProvider

A service that records input states of the given transaction and provides conflict information if any of the inputs have already been used in another transaction.



Types

Conflict data class Conflict

Specifies the consuming transaction for every conflicting state

ConsumingTx data class ConsumingTx

Specifies the transaction id, the position of the consumed state in the inputs, and the caller identity requesting the commit.

Functions

commit abstract fun commit(states: List<StateRef>, txId: SecureHash, callerIdentity: Party): Unit

Commits all input states of the given transaction

Inheritors

InMemoryUniquenessProvider class InMemoryUniquenessProvider : UniquenessProvider

A dummy Uniqueness provider that stores the whole history of consumed states in memory

PersistentUniquenessProvider class PersistentUniquenessProvider : UniquenessProvider, SingletonSerializeAsToken

A RDBMS backed Uniqueness provider