Custom annotation is not working on spring Beans - java

I have created my new custom annotation #MyCustomAnnotation
#Target({ElementType.METHOD, ElementType.TYPE, ElementType.FIELD})
#Retention(RUNTIME)
public #interface MyCustomAnnotation{
}
I applied that annotation on component and bean. Here is the code,
#MyCustomAnnotation
#Component
public class CoreBussinessLogicHandler implements GenericHandler<BussinessFile> {
//some bussiness logic
}
And
#Configuration
public class BussinessConfig {
#Autowired
private CoreIntegrationComponent coreIntegrationComponent;
#MyCustomAnnotation
#Bean(name = INCOMING_PROCESS_CHANNEL)
public MessageChannel incomingProcessChannel() {
return coreIntegrationComponent.amqpChannel(INCOMING_PROCESS_CHANNEL);
}
//some other configurations
}
Now i want all the beans annotated with #MyCustomAnnotation. So here is the code,
import org.springframework.context.ApplicationContext;
#Configuration
public class ChannelConfig {
#Autowired
private ApplicationContext applicationContext;
public List<MessageChannel> getRecipientChannel(CoreIntegrationComponent coreIntegrationComponent) {
String[] beanNamesForAnnotation = applicationContext.getBeanNamesForAnnotation(MyCustomAnnotation.class);
//Here in output I am getting bean name for CoreBussinessLogicHandler Only.
}
}
My question is why I am not getting Bean with name 'INCOMING_PROCESS_CHANNEL' as it has #MyCustomAnnotation ? If I want to get bean with name 'INCOMING_PROCESS_CHANNEL' what code changes should I do ?

This happens because your bean does not receive this annotation as you have placed it on a "bean definition configuration". So it is available but only through BeanFactory and beanDefinitions. You can either put the annotation on your bean class or write a custom method that would do the searching using bean factory.
See the accepted answer here.

You have to use AnnotationConfigApplicationContext instead of ApplicationContext
Here is a working example:
#SpringBootApplication
#Configuration
public class DemoApplication {
#Autowired
public AnnotationConfigApplicationContext ctx;
#Bean
public CommandLineRunner CommandLineRunner() {
return (args) -> {
Stream.of(ctx.getBeanNamesForAnnotation(MyCustomAnnotation.class))
.map(data -> "Found Bean with name : " + data)
.forEach(System.out::println);
};
}
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
#Target({ElementType.METHOD, ElementType.TYPE, ElementType.FIELD})
#Retention(RetentionPolicy.RUNTIME)
#interface MyCustomAnnotation{
}
#MyCustomAnnotation
#Component
class Mycomponent {
public String str = "MyComponentString";
}

Related

Can't access #Value in Spring project accross different packages and Environment doesn't contain the values either

I cannot access #Value("${app.version}") or event environment.getProperty("app.version") or any property in my controllers or services.
My project structure looks like this
src/main/java
-configuration/
AppConfig.java
EnvConfig.java
JpaConfig.java
UiConfig.java
ServicesConfig.java
UiAppInitializer.java
-repositories/
....
-models/
....
-services/
....
-controllers/
....
My UiAppInitializer is pretty straight forward,
getRootConfigClassess() returns AppConfig.class and getServletConfigClasses() returns UiConfig.class
AppConfig.java
#Configuration
#Import({
EnvConfig.class,
UiConfig.class,
ServicesConfig.class
})
public class AppConfig{}
EnvConfig
#Configuration
public class EnvConfig implements InitializingBean {
#Value("${app.version}")
private String appVersion
#Bean
public static PropertySourcesPlaceholderConfigurer properties() {
PropertySourcesPlaceholderConfigurer pc = new PropertySourcesPlaceholderConfigurer();
pc.setLocations(new ClassPathResource("application.properties"));
return pc;
}
#Override
public void afterpropertiesSet() throws Exception {
log.debug("App Version is " + appVersion);
}
}
A simple controller
#RestController
#RequestMapping(value = "/version")
public class VersionContoller {
#Value("${app.version}")
private String version;
#GetMapping()
public String getVersion() {
return version;
}
}
#Configuration
#EnableWebMvc
#ComponentScan(basePackages = {
"my.packages.path.ui"
})
public class UiConfig implements WebMvcConfigurer {
....
}
The controller just returns "${app.version}" but the afterpropertiesSet correctly logs the version.
What am I doing wrong here? I have other controllers that connect to the repository successfully which was setup in JpaConfig that usues #Value for all the properties also
Note not using Spring Boot
It seems the controller is getting initialised as a bean before the properties() bean has had setLocations() called.
You could remove classpath scanning (I assume you have it on to find the controller bean?) and in your EnvConfig declare a new method that is a bean declaration for the Controller that passes in the version String. Obviously requiring a change to the controller constructor too
#Configuration
public class EnvConfig implements InitializingBean {
#Value("${app.version}")
private String appVersion
#Bean
public static PropertySourcesPlaceholderConfigurer properties() {
PropertySourcesPlaceholderConfigurer pc = new PropertySourcesPlaceholderConfigurer();
pc.setLocations(new ClassPathResource("application.properties"));
return pc;
}
#Bean
public VersionContoller controller() {
return new VersionController(appVersion);
}
#Override
public void afterpropertiesSet() throws Exception {
log.debug("App Version is " + appVersion);
}
}

how to load #Configuration classes in an order in spring boot

i would like to load #Configuration classes in an order. i have two configuration classes. i am having a requirement of loading my SampleProperties class before sampleconfiguration class.
I have tried the following annotations but it is not working as expected.
#AutoConfigureAfter(SampleProperties.class )
#AutoConfigureBefore(SampleConfiguration.class)
I have put my congiurations class in diff package in order to read configurations classes in an order.using #Import function, i am including my configuration classes into my application
My Main Class:
#Import({SampleProperties.class,SampleConfiguration.class,})
public class SampleApplication{
public static void main(String[] args) {
SpringApplication.run(SampleApplication.class, args);
}
}
My SampleProperties Class
#Configuration
#AutoConfigureBefore(SampleConfiguration.class)
#ConfigurationProperties("demo")
#Data
public class SampleProperties {
private String team;
private int teamSize;
private String teamLeader;
}
My sampleconfiguration Class:
#Configuration
#EnableTransactionManagement
#EnableJpaRepositories(entityManagerFactoryRef="sampleEntityManager",
transactionManagerRef="sampleTransactionManager",
basePackages= {"com.example.demo.repo"})
#AutoConfigureAfter(SampleProperties.class)
public class SampleConfiguration {
#Autowired
Environment env;
#Bean(name="sampleDataSource")
#Primary
public DataSource dmsDataSource() {
// functions
return null;
}
#Primary
#Bean(name = "sampleEntityManager")
public LocalContainerEntityManagerFactoryBean dmsEntityManagerFactory(EntityManagerFactoryBuilder builder) {
// functions
return null;
}
#Primary
#Bean(name = "sampleTransactionManager")
public PlatformTransactionManager dmsTransactionManager(#Qualifier("sampleEntityManager") EntityManagerFactory entityManagerFactory) {
// functions
return null;
}
}
can anyone tell me what missing and where am making mistakes?
I think you have to use #Order annotation.
#Component
#Order(1)
public class SampleProperties {
// code
}
#Component
#Order(2)
public class SampleConfiguration {
// code
}

How to implement OR logic for spring qualifiers?

I have following configuration:
#Qualifier1
#Qualifier2
#Bean
public MyBean bean1(){...}
#Qualifier2
#Qualifier3
#Bean
public MyBean bean2(){...}
#Qualifier1
#Qualifier2
#Qualifier3
#Bean
public MyBean bean3(){...}
#Qualifier3
#Bean
public MyBean bean4(){...}
#Qualifier1
#Bean
public MyBean bean5(){...}
And it is the injection place:
#Qualifier2
#Qualifier3
#Autowired:
private List<MyBean> beans;
By default spring uses AND logic for each #Qualifier
So bean2 and bean3 will be injected.
But I want to have OR logic for that stuff so I expect beans bean1 bean2 bean3 and bean4 to be injected
How can I achieve it?
P.S.
#Qualifier annotation is not repeatable so I have to create meta annotation for each annotation:
#Retention(RetentionPolicy.RUNTIME)
#Qualifier
public #interface Qualifier1 {
}
What if you used marker interfaces instead of qualifiers? For example:
public class MyBean1 extends MyBean implements Marker1 {}
public class MyBean2 extends MyBean implements Marker2 {}
public class MyBean12 extends MyBean implements Marker1, Marker2 {}
Then using this:
#Bean
public MyBean1 myBean1() {
//...
}
#Bean
public MyBean2 myBean2() {
//...
}
#Bean
public MyBean12 myBean12() {
//...
}
and this:
#Autowired private List<Marker1> myBeans;
You would get a list of myBean1 and myBean12 beans.
And for this:
#Autowired private List<Marker2> myBeans;
You would get a list of myBean2 and myBean12 beans.
Will this work?
UPDATE I
Custom FactoryBean
I implemented TagsFactoryBean class and #Tags annotation which you can use to solve your task (I hope :)).
First, mark your beans with #Tags annotation:
#Tags({"greeting", "2letters"})
#Bean
public Supplier<String> hi() {
return () -> "hi";
}
#Tags({"parting", "2letters"})
#Bean
public Supplier<String> by() {
return () -> "by";
}
#Tags("greeting")
#Bean
public Supplier<String> hello() {
return () -> "hello";
}
#Tags("parting")
#Bean
public Supplier<String> goodbye() {
return () -> "goodbye";
}
#Tags("other")
#Bean
public Supplier<String> other() {
return () -> "other";
}
Then prepare TagsFactoryBean:
#Bean
public TagsFactoryBean words() {
return TagsFactoryBean.<Supplier>builder()
.tags("greeting", "other")
.type(Supplier.class)
.generics(String.class)
.build();
}
Here tags is an array of desired tags whose beans should be selected, type is a selected beans type, and generics is an array of generic types of the beans. The last parameter is optional and should be used only if your beans are generic.
Then you can use it with #Qualifier annotation (otherwise Spring injects all beans of Supplier<String> type):
#Autowired
#Qualifier("words")
private Map<String, Supplier<String>> beans;
The Map beans will contain three beans: hi, hello and other (their name are keys of the Map and their instances are its values).
More usage examples you can find in tests.
UPDATE II
Custom AutowireCandidateResolver
Thanks to #bhosleviraj recommendation, I implemented TaggedAutowireCandidateResolver that simplifies the process of autowiring the desired beans. Just mark your beans and the autowired collection with the same tags and you will get them injected into the collection:
#Autowired
#Tags({"greeting", "other"})
private Map<String, Supplier<String>> greetingOrOther;
#Configuration
static class Beans {
#Tags({"greeting", "2symbols", "even"})
#Bean
public Supplier<String> hi() {
return () -> "hi";
}
#Tags({"parting", "2symbols", "even"})
#Bean
public Supplier<String> by() {
return () -> "by";
}
#Tags({"greeting", "5symbols", "odd"})
#Bean
public Supplier<String> hello() {
return () -> "hello";
}
#Tags({"parting", "7symbols", "odd"})
#Bean
public Supplier<String> goodbye() {
return () -> "goodbye";
}
#Tags({"other", "5symbols", "odd"})
#Bean
public Supplier<String> other() {
return () -> "other";
}
}
You can use not only the Map for injecting beans but also other Collections.
To make it work you have to register a CustomAutowireConfigurer bean in your application and provide it with TaggedAutowireCandidateResolver:
#Configuration
public class AutowireConfig {
#Bean
public CustomAutowireConfigurer autowireConfigurer(DefaultListableBeanFactory beanFactory) {
CustomAutowireConfigurer configurer = new CustomAutowireConfigurer();
beanFactory.setAutowireCandidateResolver(new TaggedAutowireCandidateResolver());
configurer.postProcessBeanFactory(beanFactory);
return configurer;
}
}
More usage examples see in this Test.
Answer requires deep understanding of how autowiring resolution is implemented in Spring, so we can extend it.
I couldn't come up with any solution yet, but I can give you some pointers.
Possible candidate to extend is QualifierAnnotationAutowireCandidateResolver , override method that resolves to a qualified bean. And pass the custom autowire resolver to the bean factory.
You can clone source code and correct version branch from here:
https://github.com/spring-projects/spring-framework
There is a CustomAutowireConfigurerTests in spring-beans module, that might help you understand few things.
I guess you can't do it by using annotation.
What I'd use is the org.springframework.context.ApplicationContextAware Maybe you need to write some extra code but in this way you can solve your issue.
I'd implement a class like this:
#Component
public class SpringContextAware implements ApplicationContextAware {
public static ApplicationContext ctx;
#Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
ctx = applicationContext;
}
public static synchronized ApplicationContext getCtx() {
return ctx;
}
}
Then in all beans where you need the OR logic you want you can do something like this:
#Autowired
private SpringContextAware ctxAware;
#PostConstruct
public void init() {
//Here you can do your OR logic
ctxAware.getCtx().getBean("qualifier1") or ctxAware.getCtx().getBean("qualifier2")
}
Will this solve your issue?
Angelo

SpringBoot application doesn't autowire field

I do have ServiceImpl which looks like this:
#Service
#RequiredArgsConstructor
public class ServiceAImpl implements ServiceA {
private final String fieldA;
#Override
public boolean isFieldA(String text){
return fieldA.equals(text);
}
And I would like to inject a field value to fieldA in an Application.java from application.yml like this:
#EnableSwagger2
#SpringBootApplication
public class Application {
#Value("${fieldA}")
private String fieldA;
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
#Bean
public ServiceA serviceA() {
return new ServiceAImpl(fieldA);
}
But I receive the following error when running SpringBoot app:
Error creating bean with name 'serviceAImpl' defined in URLNo qualifying bean of type 'java.lang.String' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {}
Do you have any solution for that?
You annotated your class with #Service and defined it manually as a bean with the #Bean annotation. I do think the second is the way you planned to use it.
The #Service annotation will make this class get picked up by Spring's component scan and additionally create an instance of it.
Of course it tries to resolve the parameters and fails when it tries to find a matching "bean" for the String field because there is no simple String bean (and should not :) ).
Remove the #Service annotation and everything should work as expected.
Try this
#Service
public class ServiceAImpl implements ServiceA {
private final String fieldA;
#Autowire
public ServiceAImpl(#Value("${fieldA}") String fieldA){
this.fieldA = fieldA;
}
#Override
public boolean isFieldA(String text){
return fieldA.equals(text);
}
}
and this
#EnableSwagger2
#SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
You should not use #Service and #Bean for the same class!
Spring is not so smart :)
You should annotate your bean like:
#RequiredArgsConstructor
public class ServiceAImpl {
#Value("${fieldA}")
private final String something;
...
But I'm not sure it will work with the #RequiredFieldsConstructor, it would be simpler for you write down the constructor annotated with #Autowired and using the #Value annotation for the String parameter:
#Autowired
public ServiceAImpl(#Value("${aProp}") String string) {
You're using two bean declaration mechanisms:
You're registering your bean using #Service
You're registering a bean using #Bean
This means that your service will be created twice. The one defined using #Bean works properly, since it uses the #Value annotation to inject the proper value in your service.
However, the service created due to #Service doesn't know about the #Value annotation and will try to find any bean of type String, which it can't find, and thus it will throw the exception you're seeing.
Now, the solution is to pick either one of these. If you want to keep the #Bean configuration, you should remove the #Service annotation from ServiceAImpl and that will do the trick.
Alternatively, if you want to keep the #Service annotation, you should remove the #Bean declaration, and you should write your own constructor rather than relying on Lombok because this allows you to use the #Value annotation within the constructor:
#Service
public class ServiceAImpl implements ServiceA {
private final String fieldA;
/**
* This constructor works as well
*/
public ServiceAImpl(#Value("${fieldA}") String fieldA) {
this.fieldA = fieldA;
}
#Override
public boolean isFieldA(String text){
return fieldA.equals(text);
}
}
If you want to declare ServiceAImpl as a Spring bean in your Java Configuration file, you should remove the #Service annotation from the class declaration. These annotations doesn't work well together.
ServiceAImpl.java
import org.springframework.beans.factory.annotation.Autowired;
public class ServiceAImpl implements ServiceA {
private final String fieldA;
#Autowired
public ServiceAImpl(String fieldA) {
this.fieldA = fieldA;
}
#Override
public boolean isFieldA(String text) {
return fieldA.equals(text);
}
}
Application.java
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Bean;
#SpringBootApplication
public class Application {
#Value("${fieldA}")
private String fieldA;
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
#Bean
public ServiceA serviceA() {
return new ServiceAImpl(fieldA);
}
}
Your application.properties
fieldA=value
The below implementation works well for me. You have two issues, first you have to choose between #Service and #Bean and the other issue I've seen in your code was the #Value annotation, you have to use only to inject a value from the properties.
#SpringBootApplication
public class TestedValueApplication {
#Autowired
void printServiceInstance(ServiceA service) {
System.out.println("Service instance: " + service);
System.out.println("value==value? " + service.isFieldA("value"));
}
public static void main(String[] args) {
SpringApplication.run(TestedValueApplication.class, args);
}
#Bean
public ServiceA serviceA(#Value("${fieldA}") String fieldA) {
return new ServiceAImpl(fieldA);
}
}
Service:
public class ServiceAImpl implements ServiceA {
private String fieldA;
ServiceAImpl(String fieldA) {
this.fieldA = fieldA;
}
public boolean isFieldA(String text) {
return fieldA.equals(text);
}
}
application.properties:
fieldA=value

Spring: Autowire bean that does not have qualifier

Is it possible to autowire a bean that does NOT have the given qualifier in spring? The use case would be to have a list of all beans, but exclude one:
#Autowired
#NotQualifier("excludedBean") // <-- can we do something like this?
List<SomeBean> someBeanList;
public class Bean1 implements SomeBean {}
public class Bean2 implements SomeBean {}
#Qualifier("excludedBean")
public class Bean3 implements SomeBean {}
In the example above someList should contain an instance of Bean1 and Bean2 but not Bean3.
(Remark: I'm aware that the opposite would work, i.e. add some qualifier to Bean1 and Bean2 and then autowire with that qualifier.)
EDIT: Some further clarifications:
All beans are in the spring context (also the one being excluded).
Configuration needs to be annotation-based, not xml-based. Therefore, e.g. turning off autowired-candidate does not work.
Autowire capability of the bean must remain in general. In other words, I want to exclude the bean from the injection point List<SomeBean> someBeanList;, but I want to autowire it somewhere else.
You can introduce you own annotation with meta annotations #Conditional and #Qualifier
#Target({ElementType.FIELD, ElementType.METHOD})
#Retention(RetentionPolicy.RUNTIME)
#Qualifier
#Conditional(MyCondition.class)
public #interface ExcludeBean {
and then introduce class where you can do your conditional logic
public class MyCondition implements Condition {
#Override
public boolean matches(ConditionContext context, AnnotatedTypeMetadata metadata) {
return !metadata.equals(ExcludeBean.class);
}
}
In your Configuration class
#Bean
#ExcludeBean
public BeanA beanA() {
return new BeanA();
}
You can also exclude bean from being candidate for autowiring by setting autowire-candidate on particular bean or by specifying default-autowire-candidates="list of candidates here"
main point it's bean for exclude is in context but not injected into some cases with exclude condition .
you can do exclude bean with qualifier with custom annotaion and BeanPostProcessor. (I did as example for simple case , for collection of bean type , but you can extend it)
annotaion for exclude :
#Component
#Target(ElementType.FIELD)
#Retention(RetentionPolicy.RUNTIME)
public #interface ExcludeBeanByQualifierForCollectionAutowired {
String qualifierToExcludeValue();
Class<?> aClass();
}
bean post processor with injection
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.beans.factory.config.BeanPostProcessor;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.stereotype.Component;
import java.lang.reflect.Field;
import java.util.ArrayList;
import java.util.Collection;
#Component
public class ExcludeAutowiredBeanPostProcessor implements BeanPostProcessor {
#Autowired
private ConfigurableListableBeanFactory configurableBeanFactory;
#Override
public Object postProcessBeforeInitialization(Object bean, String beanName) {
Field[] fields = bean.getClass().getDeclaredFields();
for (Field field : fields) {
field.setAccessible(true);
ExcludeBeanByQualifierForCollectionAutowired myAutowiredExcludeAnnotation = field.getAnnotation(ExcludeBeanByQualifierForCollectionAutowired.class);
if (myAutowiredExcludeAnnotation != null) {
Collection<Object> beanForInjection = new ArrayList<>();
String[] beanNamesOfType = configurableBeanFactory.getBeanNamesForType(myAutowiredExcludeAnnotation.aClass());
for (String injectedCandidateBeanName : beanNamesOfType) {
Object beanCandidate = configurableBeanFactory.getBean(injectedCandidateBeanName);
Qualifier qualifierForBeanCandidate = beanCandidate.getClass().getDeclaredAnnotation(Qualifier.class);
if (qualifierForBeanCandidate == null || !qualifierForBeanCandidate.value().equals(myAutowiredExcludeAnnotation.qualifierToExcludeValue())) {
beanForInjection.add(beanCandidate);
}
}
try {
field.set(bean, beanForInjection);
} catch (IllegalAccessException e) {
e.printStackTrace();
}
}
}
return bean;
}
#Override
public Object postProcessAfterInitialization(Object bean, String beanName) {
return bean;
}
}
and example:
public class ParentBean {}
public class Bean1Included extends ParentBean {}
public class Bean2Included extends ParentBean {}
public class Bean3Included extends ParentBean {}
#Qualifier("excludedBean")
public class BeanExcluded extends ParentBean {}
configuration
#Configuration
public class BeanConfiguration {
#Bean
public Bean1Included getBean1(){
return new Bean1Included();
}
#Bean
public Bean2Included getBean2(){
return new Bean2Included();
}
#Bean
public Bean3Included getBean3(){
return new Bean3Included();
}
#Bean
public BeanExcluded getExcludedBean(){
return new BeanExcluded();
}
#Bean
public ExcludeAutowiredBeanPostProcessor excludeAutowiredBeanPostProcessor(){
return new ExcludeAutowiredBeanPostProcessor();
}
}
and result:
#ExtendWith(SpringExtension.class) // assumes Junit 5
#ContextConfiguration(classes = BeanConfiguration.class)
public class ExcludeConditionTest {
#Autowired
private ApplicationContext context;
#Autowired
private BeanExcluded beanExcluded;
#ExcludeBeanByQualifierForCollectionAutowired(qualifierToExcludeValue = "excludedBean" , aClass = ParentBean.class)
private List<ParentBean> beensWithoutExclude;
#Test
void should_not_inject_excluded_bean() {
assertThat(context.getBeansOfType(ParentBean.class).values())
.hasOnlyElementsOfTypes(Bean1Included.class,
Bean2Included.class,
Bean3Included.class,
BeanExcluded.class);
assertThat(beansWithoutExclude)
.hasOnlyElementsOfTypes(Bean1Included.class,
Bean2Included.class,
Bean3Included.class)
.doesNotHaveAnyElementsOfTypes(BeanExcluded.class);
assertThat(beanExcluded).isNotNull();
}
}
There might be two cases :
case 1 : Bean3 in not in spring context;
case 2 : Bean3 is in spring context but not injected in some cases with #Autowired ,
if you need to exclude bean with Qualifier from context at all ,use
Condition. This bean is not registered in application conxtet if matches returns false. as result :
#Autowired List someBeanList; -- here injected all beans instanceof SomeBean and registered in application context.
from spring api
Condition A single condition that must be matched in order for a
component to be registered. Conditions are checked immediately before
the bean-definition is due to be registered and are free to veto
registration based on any criteria that can be determined at that
point.
autowired with qualifier :
2.1 if you want to exclude bean with the some qualifier from autowired
value in some bean/beans and in xml configuration you can use
autowire-candidate
2.2 also you can get
all autowired values by Setter Injection and filter only
beans that you need.
//no Autowired. Autowired in method
private List<ParentBean> someBeen = new ArrayList<>();
#Autowired
public void setSomeBeen(List<ParentBean> beens){
// if you use java 8 use stream api
for (ParentBean bean:beens) {
Qualifier qualifier = bean.getClass().getAnnotation(Qualifier.class);
if(qualifier == null ||!qualifier.value().equals("excludedBean")){
someBeen.add(bean);
}
}
}
2.3 you can use custome AutowiredAnnotationBeanPostProcessor :) and customise #Autowired for you requirements if you need something realy custom.
from spring api AutowiredAnnotationBeanPostProcessor :
Note: A default AutowiredAnnotationBeanPostProcessor will be
registered by the "context:annotation-config" and
"context:component-scan" XML tags. Remove or turn off the default
annotation configuration there if you intend to specify a custom
AutowiredAnnotationBeanPostProcessor bean definition.
Another way to do this, is creating a custom component with #Qualifier
#Component
#Qualifier
public #interface MyComponent {
public boolean isMock() default false;
}
#Autowired
#MyComponent(true)
List<SomeBean> mockList; // will inject just component with "isMock = true"
#Autowired
#MyComponent(false)
List<SomeBean> notMockList; // will inject just component with "isMock = false"
#MyComponent
public class Bean1 implements SomeBean {}
#MyComponent
public class Bean2 implements SomeBean {}
#MyComponent(isMock = true)
public class Bean3 implements SomeBean {}
Obs: this code is not tested, just giving an idea

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