| Interface | Description | 
|---|---|
| WorkflowApp | 
 A workflow definition is a programmatic definition of a workflow application. 
 | 
| WorkflowInstance | 
 A workflow instance is an executable instance of a  
WorkflowApp. | 
| WorkflowLib | 
 The workflow library provides application parsing and storage capabilities for workflow instances. 
 | 
| Enum | Description | 
|---|---|
| WorkflowInstance.Status | 
 Defines the possible stati of a  
WorkflowInstance. | 
| Exception | Description | 
|---|---|
| WorkflowException | 
 Exception thrown by  
WorkflowJob and WorkflowLib. | 
Copyright © 2016 Apache Software Foundation. All rights reserved.