package cz.mendelu.api.grpcclient; import cz.mendelu.model.Sequence; import javax.enterprise.context.ApplicationScoped; import javax.transaction.Transactional; import java.util.UUID; @ApplicationScoped public class SomeTransactionTest { @Transactional public void persistSequence() { String str = "987acc67-5714-47b1-b56f-1dc56ded7c87"; UUID uuid = UUID.fromString(str); Sequence sequence = Sequence.findById(uuid); sequence.circular = false; sequence.persist(); } }