com.r3corda.core.contracts.clauses / FilterOn

FilterOn

class FilterOn<S : ContractState, C : CommandData, K : Any> : Clause<ContractState, C, K>

Filter the states that are passed through to the wrapped clause, to restrict them to a specific type.



Constructors

<init> FilterOn(clause: Clause<S, C, K>, filterStates: (List<ContractState>) -> List<S>)

Filter the states that are passed through to the wrapped clause, to restrict them to a specific type.

Properties

clause val clause: Clause<S, C, K>
filterStates val filterStates: (List<ContractState>) -> List<S>
requiredCommands val requiredCommands: Set<Class<out CommandData>>

Determine whether this clause runs or not

Functions

getExecutionPath fun getExecutionPath(commands: List<AuthenticatedObject<C>>): List<Clause<*, *, *>>

Determine the subclauses which will be verified as a result of verifying this clause.

verify fun verify(tx: TransactionForContract, inputs: List<ContractState>, outputs: List<ContractState>, commands: List<AuthenticatedObject<C>>, groupingKey: K?): Set<C>

Verify the transaction matches the conditions from this clause. For example, a "no zero amount output" clause would check each of the output states that it applies to, looking for a zero amount, and throw IllegalStateException if any matched.

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.