Package org.yawlfoundation.yawl.engine

The main engine package, handling the execution of process instances, their nets and tasks.

See: Description

Interface Summary

Interface	Description
ObserverGateway	Interface to be implemented by 'shim' classes which register with the engine to receive callbacks when tasks are posted and cancelled.
YProblemHandler	An interface to handle problems.

Class Summary

Class	Description
CaseExporter
CaseImporter
ObserverGatewayController	Class which encapsulates the management and processing of InterfaceB event observers.
YAnnouncer	Handles the announcement of engine-generated events to the environment.
YCaseNbrStore	Provides for the persistence of the last allocated case id, and the generation of new case ids.
YDefClientsLoader	Registers the default service and external client accounts when they have not been previously persisted (ie.
YEngine
YEngineImpl
YEngineRestorer	Handles the restoration of persisted objects and data pertaining to the Engine.
YNetData
YNetRunner
YNetRunnerRepository	A cache of active net runners.
YPersistenceManager	This class acts as a handler for transactional persistence within the engine.
YProblemEvent	A problem event describes the nature of a runtime execution problem.
YSpecificationID	The unique identifier of a specification.
YSpecificationTable	A mapping of specification identifiers to a list of versions of that specification.
YWorkItem
YWorkItemID
YWorkItemRepository	A cache of active workitems.

Enum Summary

Enum	Description
WorkItemCompletion	Workitem completion types
YEngine.Status
YNetRunner.ExecutionStatus
YWorkItemStatus

Package org.yawlfoundation.yawl.engine Description

The main engine package, handling the execution of process instances, their nets and tasks. Also responsible for process persistence and event announcements.