com.r3corda.core.contracts.clauses / ConcreteClause

# ConcreteClause

`abstract class ConcreteClause<in S : ContractState, C : CommandData, in T : Any> : Clause<S, C, T>`

Abstract supertype for clauses which provide their own verification logic, rather than delegating to subclauses. By default these clauses are always matched (they have no required commands).

See Also

CompositeClause

### Constructors

<init> | `ConcreteClause()` Abstract supertype for clauses which provide their own verification logic, rather than delegating to subclauses. By default these clauses are always matched (they have no required commands).

### Properties

requiredCommands | `open val requiredCommands: Set<Class<out CommandData>>` Determine whether this clause runs or not

### Functions

getExecutionPath | `open fun getExecutionPath(commands: List<AuthenticatedObject<C>>): List<Clause<*, *, *>>` Determine the subclauses which will be verified as a result of verifying this clause.

### Extension Functions

matches | `fun <C : CommandData> Clause<*, C, *>.matches(commands: List<AuthenticatedObject<C>>): Boolean` Determine if the given list of commands matches the required commands for a clause to trigger.

### Inheritors

AbstractConserveAmount | `abstract class AbstractConserveAmount<S : FungibleAsset<T>, C : CommandData, T : Any> : ConcreteClause<S, C, Issued<T>>` Standardised clause for checking input/output balances of fungible assets. Requires that a Move command is provided, and errors if absent. Must be the last clause under a grouping clause; errors on no-match, ends on match.
AbstractIRSClause | `abstract class AbstractIRSClause : ConcreteClause<State, Commands, UniqueIdentifier>` Common superclass for IRS contract clauses, which defines behaviour on match/no-match, and provides helper functions for the clauses.
AbstractIssue | `abstract class AbstractIssue<in S : ContractState, C : CommandData, T : Any> : ConcreteClause<S, C, Issued<T>>` Standard issue clause for contracts that issue fungible assets.
ClauseVerifier | `class ClauseVerifier<S : LinearState> : ConcreteClause<ContractState, CommandData, Unit>` Standard clause to verify the LinearState safety properties.
GroupClauseVerifier | `abstract class GroupClauseVerifier<S : ContractState, C : CommandData, K : Any> : ConcreteClause<ContractState, C, Unit>`
Move | `class Move : ConcreteClause<State, Commands, Issued<Terms>>`
NetClause | `open class NetClause<C : CommandData, P> : ConcreteClause<ContractState, C, Unit>` Clause for netting contract states. Currently only supports obligation contract.
NoZeroSizedOutputs | `open class NoZeroSizedOutputs<in S : FungibleAsset<T>, C : CommandData, T : Any> : ConcreteClause<S, C, Issued<T>>` Clause for fungible asset contracts, which enforces that no output state should have a balance of zero.
Redeem | `class Redeem : ConcreteClause<State, Commands, Issued<Terms>>`
SetLifecycle | `class SetLifecycle<P> : ConcreteClause<State<P>, Commands, Issued<Terms<P>>>` Obligation-specific clause for changing the lifecycle of one or more states.
Settle | `class Settle<P> : ConcreteClause<State<P>, Commands, Issued<Terms<P>>>` Obligation-specific clause for settling an outstanding obligation by witnessing change of ownership of other states to fulfil
Timestamped | `class Timestamped : ConcreteClause<ContractState, Commands, Unit>`
VerifyLifecycle | `class VerifyLifecycle<S : ContractState, C : CommandData, T : Any, P> : ConcreteClause<S, C, T>` Obligation-specific clause for verifying that all states are in normal lifecycle. In a group clause set, this must be run after any lifecycle change clause, which is the only clause that involve non-standard lifecycle states on input/output.