基于@Inject字段CDI使用@Qualifier

Question

我在CDI条件注射中遇到了问题，无法在EJB的注射中使用一种策略。

我的实际情况是：

public class someManagedBean {

    @Inject 
    @MyOwnQualifier(condition = someBean.getSomeCondition()) // not work because someBean is not already injected at this point
    private BeanInterface myEJB;

    @Inject
    SomeBean someBean;
}

@Qualifier
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
public @interface MyOwnQualifier {
    SomeCondition condition();
}

public class BeanInterfaceFactory {
    @Produces
    @MyOwnQualifier(condition = RoleCondition.ADMIN) 
    public BeanInterface getBeanInterfaceEJBImpl() {
        return new BeanInterfaceEJBImpl();
    }
}

public enum RoleCondition {
    ADMIN("ADMIN User");
}

好吧，场景解释了。现在的问题是，我需要得到的值从某物Bean.get某物条件（）返回一个Role条件，我的@MyOwnQualifer所必需的。但是此时有些Bean还没有被CDI注射。

我怎样才能让这条线起作用？

@Inject 
@MyOwnQualifier(condition = someBean.getSomeCondition()) // not work because some is not already injected at this point
private BeanInterface myEJB;

使用基于另一个注入的属性值的限定符动态注入bean的正确方法是什么？

Answer 1

试试这个...

public class someManagedBean {

    @Inject 
    @MyOwnQualifier
    private BeanInterface myEJB;
}

@Qualifier
@Retention(RetentionPolicy.RUNTIME)
@Target({ElementType.FIELD, ElementType.METHOD})
public @interface MyOwnQualifier {
    SomeCondition condition();
}

public class BeanInterfaceFactory {

    @Inject
    SomeBean someBean

    @Produces
    @MyOwnQualifier
    public BeanInterface getBeanInterfaceEJBImpl() {
        if(someBean.getCondition()) {         
            return new BeanInterfaceEJBImpl();
        } else {
           ....
        }
    }
}

public enum RoleCondition {
    ADMIN("ADMIN User");
}