| Interface | Description | 
|---|---|
| AsyncHandler<REQUEST extends AmazonWebServiceRequest,RESULT> | 
 Callback interface for notification on web service requests executed with the
 asynchronous clients in the AWS SDK for Java. 
 | 
| IRequestHandler2 | 
 Interface for  
RequestHandler2. | 
| RequestHandler | Deprecated
 by  
RequestHandler2. | 
| Class | Description | 
|---|---|
| AbstractRequestHandler | Deprecated
 by  
RequestHandler2. | 
| CredentialsRequestHandler | Deprecated
 Use of this class to retrieve the credentials is unsafe in
 multithreading scenarios. 
 | 
| HandlerChainFactory | 
 Factory for creating request/response handler chains. 
 | 
| HandlerContextKey<T> | 
 A type safe key used for setting and retrieving context in a  
Request object. | 
| RequestHandler2 | 
 Interface for addition request handling in clients. 
 | 
| RequestHandler2AdaptorTest | |
| StackedRequestHandler | 
 Composite  
RequestHandler2 to execute a chain of RequestHandler2 implementations
 in stack order. | 
| StackedRequestHandlerTest | |
| StackedRequestHandlerTest.MultipleRequestHandlers | 
 Tests a  
StackedRequestHandler with multiple RequestHandler2 added. | 
| StackedRequestHandlerTest.NoRequestHandlers | 
 Tests a  
StackedRequestHandler with no RequestHandler2's added. | 
| StackedRequestHandlerTest.SingleRequestHandler | 
 Tests a  
StackedRequestHandler with a single RequestHandler2 added. | 
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