SyncHandlerMethodArgumentResolver (Spring Framework 5.2.12.RELEASE API)

All Superinterfaces:
HandlerMethodArgumentResolver
All Known Implementing Classes:
AbstractNamedValueMethodArgumentResolver, DestinationVariableMethodArgumentResolver, HeaderMethodArgumentResolver, HeadersMethodArgumentResolver
```
public interface SyncHandlerMethodArgumentResolver
extends HandlerMethodArgumentResolver
```
An extension of HandlerMethodArgumentResolver for implementations that are synchronous in nature and do not block to resolve values.
Since:
5.2
Author:
Rossen Stoyanchev

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default reactor.core.publisher.Mono<Object>`	`resolveArgument(MethodParameter parameter, Message<?> message)`	Resolves a method parameter into an argument value from a given message.
`Object`	`resolveArgumentValue(MethodParameter parameter, Message<?> message)`	Resolve the value for the method parameter synchronously.

Methods inherited from interface org.springframework.messaging.handler.invocation.reactive.HandlerMethodArgumentResolver
supportsParameter

- Method Detail
  - resolveArgument
```
default reactor.core.publisher.Mono<Object> resolveArgument(MethodParameter parameter,
                                                            Message<?> message)
```
    Resolves a method parameter into an argument value from a given message.
    By default this simply delegates to resolveArgumentValue(org.springframework.core.MethodParameter, org.springframework.messaging.Message<?>) for synchronous resolution.
    Specified by:
    resolveArgument in interface HandlerMethodArgumentResolver
    Parameters:
    parameter - the method parameter to resolve. This parameter must have previously been passed to HandlerMethodArgumentResolver.supportsParameter(org.springframework.core.MethodParameter) which must have returned true.
    message - the currently processed message
    Returns:
    Mono for the argument value, possibly empty
  - resolveArgumentValue
```
@Nullable
Object resolveArgumentValue(MethodParameter parameter,
                            Message<?> message)
```
    Resolve the value for the method parameter synchronously.
    Parameters:
    parameter - the method parameter
    message - the currently processed message
    Returns:
    the resolved value, if any