Interface OptionalTask<A,B>

All Superinterfaces:
PersistTask<A,B>
All Known Subinterfaces:
CalendarEventLabelTask, CreateMovementTask, CreateOrderGeneratorBeanTask, GetRatingTask
All Known Implementing Classes:
AbstractActionResource.GetFormEntityTask, AbstractAllChangesTask, AbstractCmsAllChangesTask, AbstractDmsAllChangesTask, AggregateTasks.Avg, AggregateTasks.Count, AggregateTasks.SimpleSum, AggregateTasks.Sum, AnonymizeEntityHistoryTask, BufferedSetEntityDefaultsTask, CalculateDebitorOpenBalanceDueTask, CalendarEventLabelAvailabilityTask, CalendarEventLabelDefaultTask, CalendarEventLabelReservationTask, CancelVoucherTask, CascadeDeleteTask, ClearFieldsTask, CopyAdditionalRelationsTask, CopyDataTask, CopyDataTask.CopyLecturerBookingsTask, CopyDataTask.CopyRegistrationsTask, CreateAnswerTask, CreateBalanceDunningVoucherTask, CreateConsolidatableVoucherTask, CreateCorrespondenceTask, CreateDebitorTask, CreateDunningLevelTask, CreateHeaderTask, CreateMailArchiveAttachmentTask, CreateMailArchiveEntryTask, CreateOrderRateTask, CreateOrderTask, CreatePrepaymentTask, CreatePreviewTask, CreateReservationBodyTask, CreateTrainerBodyTask, CreateVoucherForIncomingPaymentTask, CreateVouchersTask, CreateWageTask, DebitorDunningCompensationTask, DebitorTotalsTask, DefaultCreateMovementTask, DefaultCreateOrderGeneratorBeanTask, DefaultGetRatingTask, DeleteCaseDocuments, DeleteRelationsTask, EmailRelationConfigTask, EntityTemplateTasks.LoadRelationsTask, EntityTemplateTasks.TemplateEnityCreator, EntityTemplateTasks.TemplateEntityFiller, EntityTemplateTasks.TemplateEntityMapper, EntityTemplateTasks.TemplateEntityToUri, EvaluateQuestionnaireLabelTask, EvaluateSourceDefaultDisplayTask, EvaluationTask, EventRegistrationModuleTask, EventRegistrationQuestionsTask, EventRegistrationResponsibleTask, EventRegistrationTask, EventRegistrationUserTask, FindEntitiesToDetermineLocationTask, FindLogEntryTask.Transform, GenerateAddressOutputTask, GenerateEvaluationExecutionsTask, GenerateFreemarkerTask, GenerateOutputJobTask, GetAllRelatedEntities, GetDateForConditionTask, GetDefaultLanguageTask, GetDirectOfftimeEventsTask, GetEventModuleDataTask, GetExistingAnswerTask, GetIntervalCountOfftimeEventsTask, GetIntervalUntilOfftimeEventsTask, GetLocaleFromLanguageRelationTask, GetQuestionAsMapTask, GetQuestionAsStringTask, GetRelatedEntityTask, GetRelationOnExecutionByEntityNameTask, GetRelationOnExecutionTask, GetSinglePrincipal, GetSurveyAsMapTask, InheritIncomeTask, JsonTreeTask, LoadArticleTask, LoginTask, LoginUserEntityTask, ModifyFieldsTask, ModifyRelationsTask, PathInfoTask, PathValidationTask, PileImportTask, PreprocessFreemarkerTemplateTask, PrincipalTasks.PrincipalConverter, PrincipalTasks.PrincipalDetailsConverter, PrincipalTasks.PrincipalFieldSetter, PrincipalTasks.RoleConverter, ProcessFreemarkerTemplatesOnCorrespondenceTask, PublishAllPageContentTask, PublishAllResourceContentTask, RelateParentEventsTask, RelateSourceEventsTask, RemoveDebitorExportTask, RemoveParallelEventTask, RemoveParentEventsTask, ReplaceMailArchiveAttachmentLinksTask, RequireKeyAsStringTask, ResetRelationTask, RevertAllChangesTask, RevertAllChangesTask, SaveOutputJobTask, SaveRequirementEvaluationPersistTask, SaveSerialCorrespondenceTask, SendEventRegistrationMailTask, SetCorrespondenceTemplateTask, SetDebitorClearingTask, SetDebitorPaymentStatusTask, SetDefaultsTask, SetGeoLocationTask, SetMaturityDateOnDebitorTask, SetRateMaturityDateTask, SetRatingOnDebitorInformationTask, SetupEnvironmentTask, UnpublishAllPageContentTask, UnpublishAllResourceContentTask, UpdateContractDatesTask, UpdateProcessingStatusTask, UserEventRegistrationQuestionsTask, ValidateEntityTask, WriteLinkageTask, WriteNonFormDataTask
public interface OptionalTask<A,B> extends PersistTask<A,B>
A task encapsulating the null-Check allowing for better chaining of tasks. The first task in a chain that returns null causes all others to skip execution.