com.r3corda.core.contracts.clauses

## Package com.r3corda.core.contracts.clauses

### Types

AllComposition | `class AllComposition<S : ContractState, C : CommandData, K : Any> : CompositeClause<S, C, K>` Compose a number of clauses, such that all of the clauses must run for verification to pass.
AnyComposition | `class AnyComposition<in S : ContractState, C : CommandData, in K : Any> : CompositeClause<S, C, K>` Compose a number of clauses, such that any number of the clauses can run.
Clause | `abstract class Clause<in S : ContractState, C : CommandData, in K : Any>` A clause of a contract, containing a chunk of verification logic. That logic may be delegated to other clauses, or provided directly by this clause.
CompositeClause | `abstract class CompositeClause<in S : ContractState, C : CommandData, in K : Any> : Clause<S, C, K>` Abstract supertype for clauses which compose other clauses together in some logical manner.
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.
FirstComposition | `class FirstComposition<S : ContractState, C : CommandData, K : Any> : CompositeClause<S, C, K>` Compose a number of clauses, such that the first match is run, and it errors if none is run.
GroupClauseVerifier | `abstract class GroupClauseVerifier<S : ContractState, C : CommandData, K : Any> : Clause<ContractState, C, Unit>`

### 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.
verifyClause | `fun <C : CommandData> verifyClause(tx: TransactionForContract, clause: Clause<ContractState, C, Unit>, commands: List<AuthenticatedObject<C>>): Unit` Verify a transaction against the given list of clauses.