corda / net.corda.core.transactions / LedgerTransaction / findReferenceInputRef

findReferenceInputRef

fun <T : ContractState> findReferenceInputRef(clazz: Class<T>, predicate: Predicate<T>): StateAndRef<T>

Helper to simplify finding a single reference input matching a Predicate.

Parameters

clazz - The class type used for filtering via an Class.isInstance check. clazz must be an extension of ContractState.

predicate - A filtering function taking a state of type T and returning true if this is the desired item. The class filtering is applied before the predicate.

Exceptions

IllegalArgumentException - if no item, or multiple items are found matching the requirements.

Return
the single item matching the predicate.

inline fun <reified T : ContractState> findReferenceInputRef(crossinline predicate: (T) -> Boolean): StateAndRef<T>