java.lang.Object
- org.springframework.web.servlet.mvc.method.annotation.CompletionStageReturnValueHandler

All Implemented Interfaces:
AsyncHandlerMethodReturnValueHandler, HandlerMethodReturnValueHandler
```
@Deprecated
@UsesJava8
public class CompletionStageReturnValueHandler
extends Object
implements AsyncHandlerMethodReturnValueHandler
```
Deprecated.
as of 4.3 DeferredResultMethodReturnValueHandler supports CompletionStage return values via an adapter mechanism.
Handles return values of type CompletionStage (implemented by CompletableFuture for example).
Since:
4.2
Author:
Sebastien Deleuze

Constructor Summary
Constructors
Constructor Description
CompletionStageReturnValueHandler()
Deprecated.

Method Summary

All Methods Instance Methods Concrete Methods Deprecated Methods
Modifier and Type	Method	Description
`void`	`handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, NativeWebRequest webRequest)`	Deprecated. Handle the given return value by adding attributes to the model and setting a view or setting the `ModelAndViewContainer.setRequestHandled(boolean)` flag to `true` to indicate the response has been handled directly.
`boolean`	`isAsyncReturnValue(Object returnValue, MethodParameter returnType)`	Deprecated. Whether the given return value represents asynchronous computation.
`boolean`	`supportsReturnType(MethodParameter returnType)`	Deprecated. Whether the given method return type is supported by this handler.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - CompletionStageReturnValueHandler
```
public CompletionStageReturnValueHandler()
```
    Deprecated.
- Method Detail
  - supportsReturnType
```
public boolean supportsReturnType(MethodParameter returnType)
```
    Deprecated.
    Description copied from interface: HandlerMethodReturnValueHandler
    Whether the given method return type is supported by this handler.
    Specified by:
    supportsReturnType in interface HandlerMethodReturnValueHandler
    Parameters:
    returnType - the method return type to check
    Returns:
    true if this handler supports the supplied return type; false otherwise
  - isAsyncReturnValue
```
public boolean isAsyncReturnValue(Object returnValue,
                                  MethodParameter returnType)
```
    Deprecated.
    Description copied from interface: AsyncHandlerMethodReturnValueHandler
    Whether the given return value represents asynchronous computation.
    Specified by:
    isAsyncReturnValue in interface AsyncHandlerMethodReturnValueHandler
    Parameters:
    returnValue - the value returned from the handler method
    returnType - the return type
    Returns:
    true if the return value type represents an async value
  - handleReturnValue
```
public void handleReturnValue(Object returnValue,
                              MethodParameter returnType,
                              ModelAndViewContainer mavContainer,
                              NativeWebRequest webRequest)
                       throws Exception
```
    Deprecated.
    Description copied from interface: HandlerMethodReturnValueHandler
    Handle the given return value by adding attributes to the model and setting a view or setting the ModelAndViewContainer.setRequestHandled(boolean) flag to true to indicate the response has been handled directly.
    Specified by:
    handleReturnValue in interface HandlerMethodReturnValueHandler
    Parameters:
    returnValue - the value returned from the handler method
    returnType - the type of the return value. This type must have previously been passed to HandlerMethodReturnValueHandler.supportsReturnType(org.springframework.core.MethodParameter) which must have returned true.
    mavContainer - the ModelAndViewContainer for the current request
    webRequest - the current request
    Throws:
    Exception - if the return value handling results in an error

Class CompletionStageReturnValueHandler

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

CompletionStageReturnValueHandler

Method Detail

supportsReturnType

isAsyncReturnValue

handleReturnValue