net.corda.core.node

Interface ServicesForResolution

All Known Subinterfaces:

AppServiceHub, ServiceHub

All Known Implementing Classes:

MockServices

@DoNotImplement
public ServicesForResolution

Subset of node services that are used for loading transactions from the wire into fully resolved, looked up forms ready for verification.

Constructor Detail

ServicesForResolution

public ServicesForResolution()

Method Detail

getIdentityService

@NotNull
IdentityService getIdentityService()

An identity service maintains a directory of parties by their associated distinguished name/public keys and thus supports lookup of a party given its key, or name. The service also manages the certificates linking confidential identities back to the well known identity (i.e. the identity in the network map) of a party.

getAttachments

@NotNull
AttachmentStorage getAttachments()

Provides access to storage of arbitrary JAR files (which may contain only data, no code).

getCordappProvider

@NotNull
CordappProvider getCordappProvider()

Provides access to anything relating to cordapps including contract attachment resolution and app context

getNetworkParametersService

@NotNull
NetworkParametersService getNetworkParametersService()

Provides access to historical network parameters that are used in transaction resolution.

getNetworkParameters

@NotNull
NetworkParameters getNetworkParameters()

Returns the network parameters the node is operating under.

loadState

@NotNull
TransactionState<?> loadState(@NotNull
                                       StateRef stateRef)

Given a class StateRef loads the referenced transaction and looks up the specified output interface ContractState.

WARNING Do not use this method unless you really only want a single state - any batch loading should go through loadStates as repeatedly calling loadState can lead to repeat deserialsiation work and severe performance degradation.

Throws:

TransactionResolutionException - if stateRef points to a non-existent transaction.

See Also:

class StateRef, interface ContractState, loadStates, loadState

loadStates

@NotNull
java.util.Set<net.corda.core.contracts.StateAndRef> loadStates(@NotNull
                                                                        java.util.Set<net.corda.core.contracts.StateRef> stateRefs)

Given a Set of class StateRef's loads the referenced transaction and looks up the specified output interface ContractState.

Throws:

TransactionResolutionException - if stateRef points to a non-existent transaction.

See Also:

Set, class StateRef, interface ContractState

loadContractAttachment

@NotNull
Attachment loadContractAttachment(@NotNull
                                           StateRef stateRef)

Returns the interface Attachment that defines the given class StateRef, which must be in the visible subset of the ledger.

See Also:

interface Attachment, class StateRef

specialise

@NotNull
LedgerTransaction specialise(@NotNull
                                      LedgerTransaction ltx)

Provides a callback for the Node to customise the class LedgerTransaction.

See Also:

class LedgerTransaction