org.springframework.messaging.handler.annotation.reactive

Class DestinationVariableMethodArgumentResolver

java.lang.Object

org.springframework.messaging.handler.annotation.reactive.AbstractNamedValueMethodArgumentResolver

org.springframework.messaging.handler.annotation.reactive.DestinationVariableMethodArgumentResolver

All Implemented Interfaces:

HandlerMethodArgumentResolver, SyncHandlerMethodArgumentResolver

public class DestinationVariableMethodArgumentResolver
extends AbstractNamedValueMethodArgumentResolver

Resolve for @DestinationVariable method parameters.

Since:

5.2

Author:

Rossen Stoyanchev

Nested Class Summary

Nested classes/interfaces inherited from class org.springframework.messaging.handler.annotation.reactive.AbstractNamedValueMethodArgumentResolver

AbstractNamedValueMethodArgumentResolver.NamedValueInfo

Field Summary

Fields

Modifier and Type	Field and Description
static String	DESTINATION_TEMPLATE_VARIABLES_HEADER The name of the header used to for template variables.

Constructor Summary

Constructors

Constructor and Description
DestinationVariableMethodArgumentResolver(org.springframework.core.convert.ConversionService conversionService)

Method Summary

Modifier and Type	Method and Description
protected AbstractNamedValueMethodArgumentResolver.NamedValueInfo	createNamedValueInfo(org.springframework.core.MethodParameter parameter) Create the AbstractNamedValueMethodArgumentResolver.NamedValueInfo object for the given method parameter.
protected void	handleMissingValue(String name, org.springframework.core.MethodParameter parameter, Message<?> message) Invoked when a value is required, but AbstractNamedValueMethodArgumentResolver.resolveArgumentInternal(org.springframework.core.MethodParameter, org.springframework.messaging.Message<?>, java.lang.String) returned null and there is no default value.
protected Object	resolveArgumentInternal(org.springframework.core.MethodParameter parameter, Message<?> message, String name) Resolves the given parameter type and value name into an argument value.
boolean	supportsParameter(org.springframework.core.MethodParameter parameter) Whether the given method parameter is supported by this resolver.

Methods inherited from class org.springframework.messaging.handler.annotation.reactive.AbstractNamedValueMethodArgumentResolver

resolveArgumentValue

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.messaging.handler.invocation.reactive.SyncHandlerMethodArgumentResolver

resolveArgument

Field Detail

DESTINATION_TEMPLATE_VARIABLES_HEADER

public static final String DESTINATION_TEMPLATE_VARIABLES_HEADER

The name of the header used to for template variables.

Constructor Detail

DestinationVariableMethodArgumentResolver

public DestinationVariableMethodArgumentResolver(org.springframework.core.convert.ConversionService conversionService)

Method Detail

supportsParameter

public boolean supportsParameter(org.springframework.core.MethodParameter parameter)

Description copied from interface: HandlerMethodArgumentResolver

Whether the given method parameter is supported by this resolver.

Parameters:

parameter - the method parameter to check

Returns:

true if this resolver supports the supplied parameter; false otherwise

createNamedValueInfo

protected AbstractNamedValueMethodArgumentResolver.NamedValueInfo createNamedValueInfo(org.springframework.core.MethodParameter parameter)

Description copied from class: AbstractNamedValueMethodArgumentResolver

Create the AbstractNamedValueMethodArgumentResolver.NamedValueInfo object for the given method parameter. Implementations typically retrieve the method annotation by means of MethodParameter.getParameterAnnotation(Class).

Specified by:

createNamedValueInfo in class AbstractNamedValueMethodArgumentResolver

Parameters:

parameter - the method parameter

Returns:

the named value information

resolveArgumentInternal

@Nullable
protected Object resolveArgumentInternal(org.springframework.core.MethodParameter parameter,
                                                   Message<?> message,
                                                   String name)

Description copied from class: AbstractNamedValueMethodArgumentResolver

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

Specified by:

resolveArgumentInternal in class AbstractNamedValueMethodArgumentResolver

Parameters:

parameter - the method parameter to resolve to an argument value

message - the current request

name - the name of the value being resolved

Returns:

the resolved argument. May be null

handleMissingValue

protected void handleMissingValue(String name,
                                  org.springframework.core.MethodParameter parameter,
                                  Message<?> message)

Description copied from class: AbstractNamedValueMethodArgumentResolver

Invoked when a value is required, but AbstractNamedValueMethodArgumentResolver.resolveArgumentInternal(org.springframework.core.MethodParameter, org.springframework.messaging.Message<?>, java.lang.String) returned null and there is no default value. Sub-classes can throw an appropriate exception for this case.

Specified by:

handleMissingValue in class AbstractNamedValueMethodArgumentResolver

Parameters:

name - the name for the value

parameter - the target method parameter

message - the message being processed