Top Description Constructors Methods
org.springframework.web.servlet.mvc.method.annotation

public Class DeferredResultMethodReturnValueHandler

extends Object
implements HandlerMethodReturnValueHandler
Class Inheritance
All Implemented Interfaces
org.springframework.web.method.support.HandlerMethodReturnValueHandler
Imports
java.util.concurrent.CompletionException, .CompletionStage, org.springframework.core.MethodParameter, org.springframework.lang.Nullable, org.springframework.web.context.request.NativeWebRequest, org.springframework.web.context.request.async.DeferredResult, .WebAsyncUtils, org.springframework.web.method.support.HandlerMethodReturnValueHandler, .ModelAndViewContainer
Handler for return values of type DeferredResult, org.springframework.util.concurrent.ListenableFuture, and CompletionStage.
Author
Rossen Stoyanchev
Since
3.2

Constructor Summary

AccessConstructor and Description
public
DeferredResultMethodReturnValueHandler()

Method Summary

Modifier and TypeMethod and Description
private DeferredResult<Object>
adaptCompletionStage(CompletionStage<?> future)

private DeferredResult<Object>
adaptListenableFuture(ListenableFuture<?> future)
References Deprecated ListenableFuture is deprecated or references (maybe indirectly) at least one deprecated element.

public void
handleReturnValue(Object
the value returned from the handler method
returnValue, MethodParameter
the type of the return value. This type must have previously been passed to supportsReturnType which must have returned true.
returnType, ModelAndViewContainer
the ModelAndViewContainer for the current request
mavContainer, NativeWebRequest
the current request
webRequest)

Implements org.springframework.web.method.support.HandlerMethodReturnValueHandler.handleReturnValue.

Handle the given return value by adding attributes to the model and setting a view or setting the ModelAndViewContainer#setRequestHandled flag to true to indicate the response has been handled directly.

public boolean
supportsReturnType(MethodParameter
the method return type to check
returnType)

Implements org.springframework.web.method.support.HandlerMethodReturnValueHandler.supportsReturnType.

Whether the given method return type is supported by this handler.

Inherited from java.lang.Object:
cloneequalsfinalizegetClasshashCodenotifynotifyAlltoStringwaitwaitwait

Constructor Detail

DeferredResultMethodReturnValueHandlerback to summary
public DeferredResultMethodReturnValueHandler()

Method Detail

adaptCompletionStageback to summary
private DeferredResult<Object> adaptCompletionStage(CompletionStage<?> future)
adaptListenableFutureback to summary
private DeferredResult<Object> adaptListenableFuture(ListenableFuture<?> future)

References Deprecated

ListenableFuture is deprecated or references (maybe indirectly) at least one deprecated element.

See corresponding docs for further information.

Annotations
@SuppressWarnings:deprecation
handleReturnValueback to summary
public void handleReturnValue(Object returnValue, MethodParameter returnType, ModelAndViewContainer mavContainer, NativeWebRequest webRequest) throws Exception

Implements org.springframework.web.method.support.HandlerMethodReturnValueHandler.handleReturnValue.

Doc from org.springframework.web.method.support.HandlerMethodReturnValueHandler.handleReturnValue.

Handle the given return value by adding attributes to the model and setting a view or setting the ModelAndViewContainer#setRequestHandled flag to true to indicate the response has been handled directly.

Parameters
returnValue:Object

the value returned from the handler method

returnType:MethodParameter

the type of the return value. This type must have previously been passed to supportsReturnType which must have returned true.

mavContainer:ModelAndViewContainer

the ModelAndViewContainer for the current request

webRequest:NativeWebRequest

the current request

Annotations
@SuppressWarnings:deprecation
@Override
Exceptions
Exception:
if the return value handling results in an error
supportsReturnTypeback to summary
public boolean supportsReturnType(MethodParameter returnType)

Implements org.springframework.web.method.support.HandlerMethodReturnValueHandler.supportsReturnType.

Doc from org.springframework.web.method.support.HandlerMethodReturnValueHandler.supportsReturnType.

Whether the given method return type is supported by this handler.

Parameters
returnType:MethodParameter

the method return type to check

Returns:boolean

true if this handler supports the supplied return type; false otherwise

Annotations
@SuppressWarnings:deprecation
@Override