Package io.fluxcapacitor.javaclient.configuration.spring

Class SpringBeanParameterResolver

java.lang.Object

io.fluxcapacitor.javaclient.configuration.spring.SpringBeanParameterResolver

All Implemented Interfaces:

ParameterResolver<Object>

public class SpringBeanParameterResolver
extends Object
implements ParameterResolver<Object>

Resolves handler method parameters annotated with Autowired from the Spring application context.

This resolver allows dependency injection of Spring-managed beans directly into handler methods. It supports both type-based and Qualifier-based resolution, and will prioritize beans marked as @Primary.

If no bean can be resolved unambiguously (e.g., multiple candidates and no qualifier or primary), the parameter is not injected and a warning is logged.

Example:

 @HandleCommand
 public void handle(MyCommand command, @Autowired MyService myService) {
     myService.performAction();
 }
 

Constructor Summary

Constructors

Constructor	Description
SpringBeanParameterResolver()

Method Summary

Modifier and Type	Method	Description
protected UnaryOperator<Object>	computeParameterResolver(Parameter p)
boolean	matches(Parameter parameter, Annotation methodAnnotation, Object value)	Indicates whether the resolved value is compatible with the declared parameter type.
UnaryOperator<Object>	resolve(Parameter p, Annotation methodAnnotation)	Resolves a Parameter of a handler method into a value function based on the given message.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.fluxcapacitor.common.handling.ParameterResolver

determinesSpecificity, filterMessage

Constructor Details

SpringBeanParameterResolver

public SpringBeanParameterResolver()

Method Details

resolve

public UnaryOperator<Object> resolve(Parameter p,
 Annotation methodAnnotation)

Description copied from interface: ParameterResolver

Resolves a Parameter of a handler method into a value function based on the given message.

If the parameter cannot be resolved by this resolver and ParameterResolver.matches(java.lang.reflect.Parameter, java.lang.annotation.Annotation, M) is not implemented, this method must return null.

Specified by:

resolve in interface ParameterResolver<Object>

Parameters:

p - the parameter to resolve

methodAnnotation - the annotation present on the handler method (e.g., @HandleEvent)

Returns:

a function that takes a message and returns a value to be injected into the method parameter, or null if the parameter cannot be resolved and ParameterResolver.matches(java.lang.reflect.Parameter, java.lang.annotation.Annotation, M) is not implemented.

matches

public boolean matches(Parameter parameter,
 Annotation methodAnnotation,
 Object value)

Description copied from interface: ParameterResolver

Indicates whether the resolved value is compatible with the declared parameter type.

This method helps determine whether the parameter can be injected for a given message. It first invokes ParameterResolver.resolve(java.lang.reflect.Parameter, java.lang.annotation.Annotation) and then verifies that the returned value (if any) is assignable to the parameter type.

Specified by:

matches in interface ParameterResolver<Object>

Parameters:

parameter - the parameter being checked

methodAnnotation - the annotation on the handler method

value - the message instance to use for resolution

Returns:

true if the parameter can be resolved and assigned to, false otherwise

computeParameterResolver

protected UnaryOperator<Object> computeParameterResolver(Parameter p)