CODEWITHSUNDEEP
javaspringconstructor-injection
user8579908
user8579908

Reputation: 53

Var args Autowire

I'm want to auto wire the beans which are the var args aruments for my constructor.

Can I do that, if yes how can I achieve?

Here is the code I'm trying:

Public class ServiceImpl implements Service{
    private Set<Rules> rules = new HashSet<Rules>(); 

    public ServiceImpl(Rules... args) {
        for (Rules r : args) {
            rules.add(r);
        } 
    }
    //...
}

I'm trying to inject in spring-config.xml like below:

<bean id = "check" class="ServiceImpl">
    <constructor-arg ref="notEmpty"></constructor-arg>
    <constructor-arg ref="check"></constructor-arg>
</bean>

Is there a way that I can achieve this with annotations and without passing constructor args here.

Upvotes: 1

Views: 303

Answers (1)

Chris
Chris

Reputation: 23171

Yes, with annotations you can add @Autowired to the constructor and the IoC container will wire in all the Rules instances that are registered in the context:

@Component
public class ServiceImpl implements Service{
private Set<Rules> rules = new HashSet<Rules>(); 

@Autowired
public ServiceImpl(Rules... args) {
    for (Rules r : args) {
        rules.add(r);
    } 
  }

}

Upvotes: 2

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