Spring Prototype <Bean Provider without @Autowired

Question

I have a Bean prototype that is instantiated by a singleton Bean with Provider:

@Component
@Scope("prototype")
class MyPrototype {}

@Component
class MySingleton {
    @Autowired
    javax.inject.Provider<MyPrototype> prototypeFactory;
}

This works fine, but our company’s rules state that it’s @Autowirednot allowed; general template @Resource(SingletonBeanClass.BEAN_ID).

Is it possible to annotate Providerin such a way that Spring search can create it?

I know that I can add a factory method with @Lookupor a singleton factory bean, but I prefer Provider.

EDIT: I didn’t manage to work like that and, in the end, had to edit it spring.xml; see below for more details.

Answer 1

Since you have an XML configuration file, you can configure it using XML as follows:

<bean id="myPrototype" class="some.package.MyPrototype" scope="prototype" />

<bean id="mySingleton" class="some.package.MySingleton">
    <lookup-method name="getPrototypeFactory" bean="myPrototype "/>
</bean>

, myPrototype getPrototypeFactory(), . .

bean bean

Answer 2

, - Google:

spring.xml. @Lookup, - bean, - bean.

, , :

@Component("proto1")
@Scope("prototype")
class MyPrototypeBean1 {
    @Lookup(value="proto2")
    protected MyPrototypeBean2 createBean2() { return null; }
}

@Component("proto2")
@Scope("prototype")
class MyPrototypeBean2 {
}

@Component("singleton")
class MySingleton {
    @Lookup(value="proto1")
    protected MyPrototypeBean1 createBean1() { return null; }
}

" @Lookup beans bean" "innerBean...".

, , beans, factory, ", .

, spring.xml:

<bean name="proto2" class="my.package.PrototypeBean2" />
<bean name="proto1" class="my.package.PrototypeBean1" >
    <lookup-method name="createBean2" bean="proto2" />
</bean>
<bean name="singleton" class="my.package.SingletonBean" >
    <lookup-method name="createBean1" bean="proto1" />
</bean>

.

:

class SingletonUnitTest {
    @Mock
    MyPrototypeBean1 bean1;
    @InjectMocks
    DummySingleton sut;

    @Before public void setBean1() {
        sut.bean = bean1;
    }

    static class DummySingletonBean extends MySingeton {
        MyPrototypeBean1 bean;
        protected MyPrototypeBean1 createBean1() {
            return bean;
        }
    }
}