| Package | Description | 
|---|---|
| org.apache.uima | The main package for the Unstructured Information Management Middleware 
Architecture. | 
| org.apache.uima.flow | |
| org.apache.uima.util | Utility classes and interfaces used by UIMA components. | 
| Class and Description | 
|---|
| FlowControllerDescription A  FlowControllerDescriptioncontains all of the information needed to instantiate
 and use aFlowController. | 
| Class and Description | 
|---|
| Flow A Flow object is responsible for routing a single CAS through an Aggregate Analysis Engine. | 
| FlowController FlowControllers are components that decide how to route CASes within Aggregate Analysis Engines. | 
| FlowController_ImplBase Implementation base class for FlowControllers. | 
| FlowControllerContext A subtype of  UimaContextused byFlowControllercomponents. | 
| SimpleStep Indicates that a CAS should be routed to a single AnalysisEngine. | 
| Step Represents the next destination or destinations to which a CAS should be routed. | 
| Class and Description | 
|---|
| FlowControllerDescription A  FlowControllerDescriptioncontains all of the information needed to instantiate
 and use aFlowController. | 
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