org.springframework.web.reactive.result.method

Class HandlerMethodArgumentResolverComposite

java.lang.Object

org.springframework.web.reactive.result.method.HandlerMethodArgumentResolverComposite

All Implemented Interfaces:

HandlerMethodArgumentResolver

class HandlerMethodArgumentResolverComposite
extends java.lang.Object
implements HandlerMethodArgumentResolver

Resolves method parameters by delegating to a list of registered HandlerMethodArgumentResolvers. Previously resolved method parameters are cached for faster lookups.

Since:

5.1.3

Author:

Rossen Stoyanchev

Field Summary

Fields

Modifier and Type	Field and Description
private java.util.Map<MethodParameter,HandlerMethodArgumentResolver>	argumentResolverCache
private java.util.List<HandlerMethodArgumentResolver>	argumentResolvers
protected Log	logger

Constructor Summary

Constructors

Constructor and Description
HandlerMethodArgumentResolverComposite()

Method Summary

Modifier and Type	Method and Description
HandlerMethodArgumentResolverComposite	addResolver(HandlerMethodArgumentResolver resolver) Add the given HandlerMethodArgumentResolver.
HandlerMethodArgumentResolverComposite	addResolvers(HandlerMethodArgumentResolver... resolvers) Add the given HandlerMethodArgumentResolvers.
HandlerMethodArgumentResolverComposite	addResolvers(java.util.List<? extends HandlerMethodArgumentResolver> resolvers) Add the given HandlerMethodArgumentResolvers.
void	clear() Clear the list of configured resolvers.
private HandlerMethodArgumentResolver	getArgumentResolver(MethodParameter parameter) Find a registered HandlerMethodArgumentResolver that supports the given method parameter.
java.util.List<HandlerMethodArgumentResolver>	getResolvers() Return a read-only list with the contained resolvers, or an empty list.
<any>	resolveArgument(MethodParameter parameter, BindingContext bindingContext, ServerWebExchange exchange) Iterate over registered HandlerMethodArgumentResolvers and invoke the one that supports it.
boolean	supportsParameter(MethodParameter parameter) Whether the given method parameter is supported by any registered HandlerMethodArgumentResolver.

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected final Log logger

argumentResolvers

private final java.util.List<HandlerMethodArgumentResolver> argumentResolvers

argumentResolverCache

private final java.util.Map<MethodParameter,HandlerMethodArgumentResolver> argumentResolverCache

Constructor Detail

HandlerMethodArgumentResolverComposite

HandlerMethodArgumentResolverComposite()

Method Detail

addResolver

public HandlerMethodArgumentResolverComposite addResolver(HandlerMethodArgumentResolver resolver)

Add the given HandlerMethodArgumentResolver.

addResolvers

public HandlerMethodArgumentResolverComposite addResolvers(@Nullable
                                                           HandlerMethodArgumentResolver... resolvers)

Add the given HandlerMethodArgumentResolvers.

addResolvers

public HandlerMethodArgumentResolverComposite addResolvers(@Nullable
                                                           java.util.List<? extends HandlerMethodArgumentResolver> resolvers)

Add the given HandlerMethodArgumentResolvers.

getResolvers

public java.util.List<HandlerMethodArgumentResolver> getResolvers()

Return a read-only list with the contained resolvers, or an empty list.

clear

public void clear()

Clear the list of configured resolvers.

supportsParameter

public boolean supportsParameter(MethodParameter parameter)

Whether the given method parameter is supported by any registered HandlerMethodArgumentResolver.

Specified by:

supportsParameter in interface HandlerMethodArgumentResolver

Parameters:

parameter - the method parameter

resolveArgument

public <any> resolveArgument(MethodParameter parameter,
                             BindingContext bindingContext,
                             ServerWebExchange exchange)

Iterate over registered HandlerMethodArgumentResolvers and invoke the one that supports it.

Specified by:

resolveArgument in interface HandlerMethodArgumentResolver

Parameters:

parameter - the method parameter

bindingContext - the binding context to use

exchange - the current exchange

Returns:

Mono for the argument value, possibly empty

Throws:

java.lang.IllegalStateException - if no suitable HandlerMethodArgumentResolver is found.

getArgumentResolver

@Nullable
private HandlerMethodArgumentResolver getArgumentResolver(MethodParameter parameter)

Find a registered HandlerMethodArgumentResolver that supports the given method parameter.