org.springframework.web.reactive.result.method.annotation

Class AbstractNamedValueSyncArgumentResolver

java.lang.Object

org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport

org.springframework.web.reactive.result.method.annotation.AbstractNamedValueArgumentResolver

org.springframework.web.reactive.result.method.annotation.AbstractNamedValueSyncArgumentResolver

All Implemented Interfaces:

HandlerMethodArgumentResolver, SyncHandlerMethodArgumentResolver

Direct Known Subclasses:

CookieValueMethodArgumentResolver, ExpressionValueMethodArgumentResolver, MatrixVariableMethodArgumentResolver, PathVariableMethodArgumentResolver, RequestAttributeMethodArgumentResolver, RequestHeaderMethodArgumentResolver, RequestParamMethodArgumentResolver

public abstract class AbstractNamedValueSyncArgumentResolver
extends AbstractNamedValueArgumentResolver
implements SyncHandlerMethodArgumentResolver

An extension of AbstractNamedValueArgumentResolver for named value resolvers that are synchronous and yet non-blocking. Subclasses implement the synchronous resolveNamedValue(java.lang.String, org.springframework.core.MethodParameter, org.springframework.web.server.ServerWebExchange) to which the asynchronous resolveName(java.lang.String, org.springframework.core.MethodParameter, org.springframework.web.server.ServerWebExchange) delegates to by default.

Since:

5.0

Author:

Rossen Stoyanchev

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.web.reactive.result.method.annotation.AbstractNamedValueArgumentResolver

AbstractNamedValueArgumentResolver.NamedValueInfo

Field Summary

Fields inherited from class org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport

logger

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractNamedValueSyncArgumentResolver(ConfigurableBeanFactory factory, ReactiveAdapterRegistry registry) Create a new AbstractNamedValueSyncArgumentResolver.

Method Summary

Modifier and Type	Method and Description
reactor.core.publisher.Mono<Object>	resolveArgument(MethodParameter parameter, BindingContext bindingContext, ServerWebExchange exchange) Resolve the value for the method parameter.
Object	resolveArgumentValue(MethodParameter parameter, BindingContext context, ServerWebExchange exchange) Resolve the value for the method parameter synchronously.
protected reactor.core.publisher.Mono<Object>	resolveName(String name, MethodParameter param, ServerWebExchange exchange) Resolve the given parameter type and value name into an argument value.
protected abstract Object	resolveNamedValue(String name, MethodParameter param, ServerWebExchange exchange) Actually resolve the value synchronously.

Methods inherited from class org.springframework.web.reactive.result.method.annotation.AbstractNamedValueArgumentResolver

createNamedValueInfo, handleMissingValue, handleMissingValue, handleResolvedValue

Methods inherited from class org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverSupport

checkAnnotatedParamNoReactiveWrapper, checkParameterType, checkParameterTypeNoReactiveWrapper, getAdapterRegistry

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface org.springframework.web.reactive.result.method.HandlerMethodArgumentResolver

supportsParameter

Constructor Detail

AbstractNamedValueSyncArgumentResolver

protected AbstractNamedValueSyncArgumentResolver(@Nullable
                                                 ConfigurableBeanFactory factory,
                                                 ReactiveAdapterRegistry registry)

Create a new AbstractNamedValueSyncArgumentResolver.

Parameters:

factory - a bean factory to use for resolving ${...} placeholder and #{...} SpEL expressions in default values; or null if default values are not expected to have expressions

registry - for checking reactive type wrappers

Method Detail

resolveArgument

public reactor.core.publisher.Mono<Object> resolveArgument(MethodParameter parameter,
                                                           BindingContext bindingContext,
                                                           ServerWebExchange exchange)

Description copied from interface: HandlerMethodArgumentResolver

Resolve the value for the method parameter.

Specified by:

resolveArgument in interface HandlerMethodArgumentResolver

Specified by:

resolveArgument in interface SyncHandlerMethodArgumentResolver

Overrides:

resolveArgument in class AbstractNamedValueArgumentResolver

Parameters:

parameter - the method parameter

bindingContext - the binding context to use

exchange - the current exchange

Returns:

Mono for the argument value, possibly empty

resolveArgumentValue

public Object resolveArgumentValue(MethodParameter parameter,
                                   BindingContext context,
                                   ServerWebExchange exchange)

Description copied from interface: SyncHandlerMethodArgumentResolver

Resolve the value for the method parameter synchronously.

Specified by:

resolveArgumentValue in interface SyncHandlerMethodArgumentResolver

Parameters:

parameter - the method parameter

context - the binding context to use

exchange - the current exchange

Returns:

the resolved value, if any

resolveName

protected final reactor.core.publisher.Mono<Object> resolveName(String name,
                                                                MethodParameter param,
                                                                ServerWebExchange exchange)

Description copied from class: AbstractNamedValueArgumentResolver

Resolve the given parameter type and value name into an argument value.

Specified by:

resolveName in class AbstractNamedValueArgumentResolver

Parameters:

name - the name of the value being resolved

param - the method parameter to resolve to an argument value (pre-nested in case of a Optional declaration)

exchange - the current exchange

Returns:

the resolved argument (may be empty Mono)

resolveNamedValue

@Nullable
protected abstract Object resolveNamedValue(String name,
                                                      MethodParameter param,
                                                      ServerWebExchange exchange)

Actually resolve the value synchronously.