Package org.springframework.messaging.simp.annotation.support

Class PrincipalMethodArgumentResolver

java.lang.Object

org.springframework.messaging.simp.annotation.support.PrincipalMethodArgumentResolver

All Implemented Interfaces:

HandlerMethodArgumentResolver

public class PrincipalMethodArgumentResolver
extends Object
implements HandlerMethodArgumentResolver

Resolver for arguments of type Principal, including Optional<Principal>.

Since:

4.0

Author:

Rossen Stoyanchev

Constructor Summary

Constructors

Constructor	Description
PrincipalMethodArgumentResolver()

Method Summary

Modifier and Type	Method	Description
Object	resolveArgument(MethodParameter parameter, Message<?> message)	Resolves a method parameter into an argument value from a given message.
boolean	supportsParameter(MethodParameter parameter)	Whether the given method parameter is supported by this resolver.

Methods inherited from class java.lang.Object

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

Constructor Details

PrincipalMethodArgumentResolver

public PrincipalMethodArgumentResolver()

Method Details

supportsParameter

public boolean supportsParameter(MethodParameter parameter)

Description copied from interface: HandlerMethodArgumentResolver

Whether the given method parameter is supported by this resolver.

Specified by:

supportsParameter in interface HandlerMethodArgumentResolver

Parameters:

parameter - the method parameter to check

Returns:

true if this resolver supports the supplied parameter; false otherwise

resolveArgument

@Nullable
public Object resolveArgument(MethodParameter parameter,
 Message<?> message)

Description copied from interface: HandlerMethodArgumentResolver

Resolves a method parameter into an argument value from a given message.

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:

the resolved argument value, or null