net.corda.core.transactions / BaseTransaction

BaseTransaction

abstract class BaseTransaction : NamedByHash

An abstract class defining fields shared by all transaction types in the system.



Constructors

<init> BaseTransaction(inputs: List<*>, outputs: List<TransactionState<ContractState>>, notary: Party?, mustSign: List<PublicKey>, type: TransactionType, timestamp: Timestamp?)

An abstract class defining fields shared by all transaction types in the system.

Properties

inputs open val inputs: List<*>

The inputs of this transaction. Note that in BaseTransaction subclasses the type of this list may change

mustSign val mustSign: List<PublicKey>

Keys that are required to have signed the wrapping SignedTransaction, ordered to match the list of signatures. There is nothing that forces the list to be the correct list of signers for this transaction until the transaction is verified by using LedgerTransaction.verify. It includes the notary key, if the notary field is set.

notary val notary: Party?

If present, the notary for this transaction. If absent then the transaction is not notarised at all. This is intended for issuance/genesis transactions that dont consume any other states and thus cant double spend anything.

outputs val outputs: List<TransactionState<ContractState>>

Ordered list of states defined by this transaction, along with the associated notaries.

timestamp val timestamp: Timestamp?

If specified, a time window in which this transaction may have been notarised. Contracts can check this time window to find out when a transaction is deemed to have occurred, from the ledgers perspective.

type val type: TransactionType

Pointer to a class that defines the behaviour of this transaction: either normal, or "notary changing".

Inherited Properties

id abstract val id: SecureHash

Functions

checkInvariants fun checkInvariants(): Unit
equals open fun equals(other: Any?): Boolean
hashCode open fun hashCode(): Int

Inheritors

LedgerTransaction class LedgerTransaction : BaseTransaction

A LedgerTransaction is derived from a WireTransaction. It is the result of doing the following operations:

WireTransaction class WireTransaction : BaseTransaction

A transaction ready for serialisation, without any signatures attached. A WireTransaction is usually wrapped by a SignedTransaction that carries the signatures over this payload. The hash of the wire transaction is the identity of the transaction, that is, its possible for two SignedTransactions with different sets of signatures to have the same identity hash.