ch.rasc.wampspring.method

Class PayloadArgumentResolver

java.lang.Object

ch.rasc.wampspring.method.PayloadArgumentResolver

All Implemented Interfaces:

org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolver

public class PayloadArgumentResolver
extends Object
implements org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolver

A resolver to extract and convert the payload of a message. It also validates the payload using a Validator if the argument is annotated with a Validation annotation.

This HandlerMethodArgumentResolver should be ordered last as it supports all types and does not require the Payload annotation.

This resolver only supports WampPublishListener annotated methods.

Author:

Rossen Stoyanchev, Brian Clozel, Stephane Nicoll, Ralph Schaer

Constructor Summary

Constructors

Constructor and Description
PayloadArgumentResolver(org.springframework.context.ApplicationContext applicationContext, MethodParameterConverter methodParameterConverter)

Method Summary

Modifier and Type	Method and Description
protected boolean	isEmptyPayload(Object payload) Specify if the given payload is empty.
Object	resolveArgument(org.springframework.core.MethodParameter param, org.springframework.messaging.Message<?> message)
boolean	supportsParameter(org.springframework.core.MethodParameter parameter)
protected void	validate(org.springframework.messaging.Message<?> message, org.springframework.core.MethodParameter parameter, Object target)

Methods inherited from class java.lang.Object

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

Constructor Detail

PayloadArgumentResolver

public PayloadArgumentResolver(org.springframework.context.ApplicationContext applicationContext,
                               MethodParameterConverter methodParameterConverter)

Method Detail

supportsParameter

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

Specified by:

supportsParameter in interface org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolver

resolveArgument

public Object resolveArgument(org.springframework.core.MethodParameter param,
                              org.springframework.messaging.Message<?> message)
                       throws Exception

Specified by:

resolveArgument in interface org.springframework.messaging.handler.invocation.HandlerMethodArgumentResolver

Throws:

Exception

isEmptyPayload

protected boolean isEmptyPayload(Object payload)

Specify if the given payload is empty.

Parameters:

payload - the payload to check (can be null)

validate

protected void validate(org.springframework.messaging.Message<?> message,
                        org.springframework.core.MethodParameter parameter,
                        Object target)