Package wt.workflow.engine

Provides workflow classes responsible for the flow of control and data from an execution point of view.

See:
Description

Interface Summary

WfEngineService	This class WfEngineService represents the client accessible API to the workflow engine.
WfEngineServiceSvr	The WfEngineServiceSvr interface contains the server accessible API.
WfNode	WfNode is an interface representing the objects that may occur in a workflow graph.
WfRequester	WfRequester is an interface for classes that serve as adapters of WfProcess in different usage scenarios.

Class Summary

ActivityActivityLink	The ActivityActivityLink represents associations between workflow steps.
ActivityConnectorLink	The ActivityConnectorLink associates steps to connectors.
ConnectorActivityLink	The ConnectorActivityLink joins connectors to activities.
ConnectorConnectorLink	The ConnectorConnectorLink class joins connectors to connectors.
FiredLinkVector	FiredLinkVector holds links that fired a connector so consecutive firings of a same link are not counted twice The links are stored as ids.
MigrateWfProcess_R4ToR5
MigrateWfQueueEntries	Migrate all 6.2.6 ScheduleQueueEntry amd QueueEntry objects to equivalent 7.0 entries.
ProcessData	The ProcessData represents data used by execution objects.
SourceHistoryLink	Use the newSourceHistoryLink static factory method(s), not the SourceHistoryLink constructor, to construct instances of this class.
StandardWfEngineService	Standard implementation of the workflow engine service.
StandardWfEngineService.SynchRobotCache	Internal class for creation of distributed cache that maps event keys to oids of synchronization robots.
SynchedWorkflow
WfActivity	WfActivity represents a request for work in the context of the containing WfProcess.
WfAdHocActivity	Use the newWfAdHocActivity static factory method(s), not the WfAdHocActivity constructor, to construct instances of this class.
WfAssigneeNotification	This class is to be used for variable modification of the parameters associated with overdue (eg.
WfAssignmentEventAudit	WfAssignmentEventAudit specializes WfEventAudit for assignment change events.
WfBlock	The WfBlock class supports the execution of blocks.
WfConnector	The WfConnector class represents logical sequencing combinations between workflow steps.
WfConnectorAction	WfConnectorType enumerates the possible actions that can be carried out by connectors.
WfConnectorEvent	WfConnectorType enumerates the possible events that can be produced by connectors.
WfConnectorFunction	The WfConnectorFunction class enumerates the possible functions a connector may have.
WfConnectorState	The WfConnectorState class enumerates the possible states a connector may be in.
WfConnectorType	WfConnectorType enumerates the possible types of connectors.
WfContainer	Supported API: false Extendable: false
WfContainerReference	Use the newWfContainerReference static factory method(s), not the WfContainerReference constructor, to construct instances of this class.
WfCreateProcessEventAudit	WfCreateProcessEventAudit specializes WfEventAudit by adding information related to creation of a WfProcess.
WfCustomEvent	Workflow event that can be emitted with an arbitrary payload.
WfDataEventAudit	WfDataEventAudit specializes WfEventAudit for data change events.
WfDueDate	This class is to be used for variable modification of a process' or activity's deadline Date.
WfDuration	This class is to be used for variable modification of a process' or activity's deadline duration..
WfEngineHelper	Helper class that provides client access to the WfEngineService API.
WfEngineServerHelper	WfEngineServerHelper is an auxiliary class to provide access to server only functionality to the workflow engine.
WfEngineServiceEvent	Keyed event emitted by the workflow engine caused by a change or exception in an execution object.
WfEngineServiceFwd	This class WfEngineService represents the client accessible API to the workflow engine.
WfEventAudit	The WfEventAudit provides audit records of workflow event information.
WfEventAuditType	WfEventAuditType enumerates the types of events that may occur in the execution of a process that may be recorded or emitted as a keyed event.
WfEventConfiguration	WfEventConfiguration controls the execution behavior of the obejct.
WfEventHelper	Creates and stores workflow events.
WfEventHelper.SaveEventAudit	Runnable class that implements the saving of event audits.
WfExceptionActionType	The WfExceptionActionType enumerates the possible actions to be taken when an execution object is overdue.
WfExceptionEventAudit	WfExceptionrEventAudit specializes WfEventAudit for execution error events.
WfExecutionObject	WfExecutionObject is an abstract base class that defines common attributes, states and operations for processes and steps.
WfInstruction	This class is for use by WfVariable to hold dynamic activity instructions.
WfLink	Abstract base class for non-control workflow link objects.
WfMonitor
WfOverdueActionType	The WfOverdueActionType enumerates the possible actions to be taken when an execution object is overdue.
WfProcess	A WfProcess is the performer of a workflow.
WfProcessReference	WfProcessReference represents references to a given workflow processes.
WfProcessRequester	The WfProcessRequester class implements WfRequester to allow processes to be used by external applications.
WfRequesterActivity	The WfRequesterActivity class implements WfRequester to allow processes to be embedded in other processes.
WfRouterType	The WfRouterType enumerates the possible routing properties of a workflow step (node).
WfState	The WfState class enumerates the possible states an execution object may be in.
WfStateEventAudit	This class specializes WfEventAudit by adding state change information.
WfTemplateProcessor	WfTemplateProcessor provides support for the generation of execution time notification.
WfTransition	Used together with the State type to define the state transitions anexecution object can perform when it is in a particular state.
WfVariable	Name-value pair.
WfVotingEventAudit	Use the newWfVotingEventAudit static factory method(s), not the WfVotingEventAudit constructor, to construct instances of this class.

Exception Summary

AlreadyRunningException	Thrown if an attempt is made to start a WfExecutionObject that is already running.
CannotCompleteException	Thrown if an attempt is made to complete execution of a WfActivity when it cannot be completed.
CannotResumeException	Thrown when an attempt is made to perform invalid resume operation on a WfExecutionObject.
CannotStartException	Thrown if an attempt is made to start a WfExecutionObject that can't be started.
CannotStopException	Thrown when an attempt is made to perform invalid stop operation on a WfExecutionObject.
CannotSuspendException	Thrown when an attempt is made to perform invalid suspend operation on a WfExecutionObject.
DataMissingException	Exception thrown when a value is not provided for a required variable when an execution object is started.
FailedExpressionException	This exception is thrown when a robot expression returns 'false.' Supported API: false Extendable: false
FailedTransitionException	This exception is thrown when a transition expression returns 'false.' Supported API: false Extendable: false
HistoryNotAvailableException	Thrown when a request is made for the event audit history of an WfExecutionObject when the history is not available.
InvalidDataException	Thrown in case an attempt is made to update the context of the result of a WfExecutionObject with data that do match the signature of that object.
InvalidPerformerException	Thrown when an attempt is made to signal a WfEventAudit to a WfRequester that was not created by the WfProcess associated with the WfRequester.
InvalidStateException	Thrown when and attempt is made to change the state of a WfExecutionObject to a state that is not defined for that object.
NotRunningException	Thrown when an attempt is made to perform invalid operation on a WfExecutionObject that requires the object be in a running state.
ResultNotAvailableException	Thrown if the requested result of a WfExecutionObject is not available.
SourceNotAvailableException	Thrown by a request for the source of a WfEventAudit when the source is no longer available.
TransitionNotAllowedException	Thrown if an attempt is made to perform an invalid state transition of a WfExecutionObject.

Package wt.workflow.engine Description

Provides workflow classes responsible for the flow of control and data from an execution point of view.

The Workflow Engine Package

This package contains the classes responsible for the workflow enactment. Workflows are represented by processes (WfProcess objects) or blocks (WfBlock objects) that are composed of activities (WfActivity objects or WfAdhocActivity objects). Each activity may be performed by humans (WfAssignedActivity and WfAdhocActivity), or by applications (represented by a WfRobotActivity object). Finally, an activity may also be a reference (represented by a WfRequesterActivity object).

Both WfProcess and WfActivity classes extend the WfExecutionObject. WfExecutionObject is responsible mainly for object identification, state maintenance (allowing only valid transitions), and information holding.

Workflow Engine Package Diagram