org.kuali.rice.kew.engine.transition
Class TransitionEngine

java.lang.Object
  org.kuali.rice.kew.engine.transition.TransitionEngine

Direct Known Subclasses:

DynamicTransitionEngine, JoinTransitionEngine, SimpleTransitionEngine, SplitTransitionEngine, SubProcessTransitionEngine

public abstract class TransitionEngine
extends Object

Common superclass for all Transition Engines. A TransitionEngine handles transitioning into and out of a RouteNodeInstance. The TransitionEngine is also responsible for determining if a Node has completed.

Author:

Kuali Rice Team (rice.collab@kuali.org)

Field Summary

private RouteHelper

helper

Constructor Summary

TransitionEngine()

Method Summary

protected Node	getNode(RouteNode routeNode, Class nodeClass)
protected RouteHelper	getRouteHelper()
abstract ProcessResult	isComplete(RouteContext context) Tell the WorkflowEngine processing the activeNodeInstance if the node is complete and transitionFrom can be called.
protected List<RouteNodeInstance>	resolveNextNodeInstances(RouteNodeInstance nodeInstance)
protected List<RouteNodeInstance>	resolveNextNodeInstances(RouteNodeInstance nodeInstance, List<RouteNode> nextRouteNodes) Determines the next nodes instances for the transition.
protected void	setRouteHelper(RouteHelper helper)
Transition	transitionFrom(RouteContext context, ProcessResult processResult)
RouteNodeInstance	transitionTo(RouteNodeInstance nextNodeInstance, RouteContext context)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

helper

private RouteHelper helper

Constructor Detail

TransitionEngine

public TransitionEngine()

Method Detail

transitionTo

public RouteNodeInstance transitionTo(RouteNodeInstance nextNodeInstance,
                                      RouteContext context)
                               throws Exception

Throws:

Exception

isComplete

public abstract ProcessResult isComplete(RouteContext context)
                                  throws Exception

Tell the WorkflowEngine processing the activeNodeInstance if the node is complete and transitionFrom can be called.

Parameters:

context - for routing

Returns:

boolean

Throws:

Exception

transitionFrom

public Transition transitionFrom(RouteContext context,
                                 ProcessResult processResult)
                          throws Exception

Throws:

Exception

setRouteHelper

protected void setRouteHelper(RouteHelper helper)

getRouteHelper

protected RouteHelper getRouteHelper()

getNode

protected Node getNode(RouteNode routeNode,
                       Class nodeClass)
                throws Exception

Throws:

Exception

resolveNextNodeInstances

protected List<RouteNodeInstance> resolveNextNodeInstances(RouteNodeInstance nodeInstance,
                                                           List<RouteNode> nextRouteNodes)

Determines the next nodes instances for the transition. If the node instance already has next nodes instances (i.e. a dynamic node), then those will be returned. Otherwise it will resolve the next nodes from the RouteNode prototype.

Parameters:

nodeInstance - for the transition

nextRouteNodes - list of route notes

Returns:

list of route note instances

resolveNextNodeInstances

protected List<RouteNodeInstance> resolveNextNodeInstances(RouteNodeInstance nodeInstance)