Merge pull request #8125 from eugenp/revert-8119-BAEL-3275-2

Revert "BAEL-3275: Using blocking queue for pub-sub"

spring-boot-di/src/main/java/com/baeldung/SpringBootDiApplication.java

@@ -0,0 +1,12 @@
+package com.baeldung;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SpringBootDiApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SpringBootDiApplication.class, args);
+    }
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/ExampleBean.java

@@ -0,0 +1,5 @@
+package com.baeldung.componentscan;
+
+public class ExampleBean {
+
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/annotation/Animal.java

@@ -0,0 +1,11 @@
+package com.baeldung.componentscan.filter.annotation;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+@Retention(RetentionPolicy.RUNTIME)
+@Target(ElementType.TYPE)
+public @interface Animal {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/annotation/ComponentScanAnnotationFilterApp.java

@@ -0,0 +1,13 @@
+package com.baeldung.componentscan.filter.annotation;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.FilterType;
+
+@Configuration
+@ComponentScan(includeFilters = @ComponentScan.Filter(type = FilterType.ANNOTATION, classes = Animal.class))
+public class ComponentScanAnnotationFilterApp {
+
+    public static void main(String[] args) {
+    }
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/annotation/Elephant.java

@@ -0,0 +1,5 @@
+package com.baeldung.componentscan.filter.annotation;
+
+@Animal
+public class Elephant {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/aspectj/Cat.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.aspectj;
+
+public class Cat {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/aspectj/ComponentScanAspectJFilterApp.java

@@ -0,0 +1,15 @@
+package com.baeldung.componentscan.filter.aspectj;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.FilterType;
+
+@Configuration
+@ComponentScan(includeFilters = @ComponentScan.Filter(type = FilterType.ASPECTJ,
+        pattern = "com.baeldung.componentscan.filter.aspectj.* "
+                + "&& !(com.baeldung.componentscan.filter.aspectj.L* "
+                + "|| com.baeldung.componentscan.filter.aspectj.C*)"))
+public class ComponentScanAspectJFilterApp {
+    public static void main(String[] args) {
+    }
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/aspectj/Elephant.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.aspectj;
+
+public class Elephant {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/aspectj/Loin.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.aspectj;
+
+public class Loin {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/assignable/Animal.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.assignable;
+
+public interface Animal {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/assignable/Cat.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.assignable;
+
+public class Cat implements Animal {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/assignable/ComponentScanAssignableTypeFilterApp.java

@@ -0,0 +1,13 @@
+package com.baeldung.componentscan.filter.assignable;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.FilterType;
+
+@Configuration
+@ComponentScan(includeFilters = @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, classes = Animal.class))
+public class ComponentScanAssignableTypeFilterApp {
+
+    public static void main(String[] args) {
+    }
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/assignable/Elephant.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.assignable;
+
+public class Elephant implements Animal {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/custom/Cat.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.custom;
+
+public class Cat {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/custom/ComponentScanCustomFilter.java

@@ -0,0 +1,19 @@
+package com.baeldung.componentscan.filter.custom;
+
+import org.springframework.core.type.ClassMetadata;
+import org.springframework.core.type.classreading.MetadataReader;
+import org.springframework.core.type.classreading.MetadataReaderFactory;
+import org.springframework.core.type.filter.TypeFilter;
+
+import java.io.IOException;
+
+public class ComponentScanCustomFilter implements TypeFilter {
+
+    @Override
+    public boolean match(MetadataReader metadataReader, MetadataReaderFactory metadataReaderFactory) throws IOException {
+        ClassMetadata classMetadata = metadataReader.getClassMetadata();
+        String fullyQualifiedName = classMetadata.getClassName();
+        String className = fullyQualifiedName.substring(fullyQualifiedName.lastIndexOf(".") + 1);
+        return className.length() > 5 ? true : false;
+    }
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/custom/ComponentScanCustomFilterApp.java

@@ -0,0 +1,13 @@
+package com.baeldung.componentscan.filter.custom;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.FilterType;
+
+@Configuration
+@ComponentScan(includeFilters = @ComponentScan.Filter(type = FilterType.CUSTOM, classes = ComponentScanCustomFilter.class))
+public class ComponentScanCustomFilterApp {
+
+    public static void main(String[] args) {
+    }
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/custom/Elephant.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.custom;
+
+public class Elephant {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/custom/Loin.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.custom;
+
+public class Loin {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/regex/Cat.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.regex;
+
+public class Cat {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/regex/ComponentScanRegexFilterApp.java

@@ -0,0 +1,13 @@
+package com.baeldung.componentscan.filter.regex;
+
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.FilterType;
+
+@Configuration
+@ComponentScan(includeFilters = @ComponentScan.Filter(type = FilterType.REGEX, pattern = ".*(nt)"))
+public class ComponentScanRegexFilterApp {
+
+    public static void main(String[] args) {
+    }
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/regex/Elephant.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.regex;
+
+public class Elephant {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/filter/regex/Loin.java

@@ -0,0 +1,4 @@
+package com.baeldung.componentscan.filter.regex;
+
+public class Loin {
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/springapp/SpringComponentScanApp.java

@@ -0,0 +1,34 @@
+package com.baeldung.componentscan.springapp;
+
+import com.baeldung.componentscan.ExampleBean;
+
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+@ComponentScan
+// @ComponentScan(excludeFilters = @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = Rose.class))
+// @ComponentScan(basePackages = "com.baeldung.componentscan.springapp")
+// @ComponentScan(basePackages = "com.baeldung.componentscan.springapp.animals")
+// @ComponentScan (excludeFilters = @ComponentScan.Filter(type=FilterType.REGEX,pattern="com\\.baeldung\\.componentscan\\.springapp\\.flowers\\..*"))
+public class SpringComponentScanApp {
+
+    private static ApplicationContext applicationContext;
+
+    @Bean
+    public ExampleBean exampleBean() {
+        return new ExampleBean();
+    }
+
+    public static void main(String[] args) {
+        applicationContext = new AnnotationConfigApplicationContext(SpringComponentScanApp.class);
+
+        for (String beanName : applicationContext.getBeanDefinitionNames()) {
+            System.out.println(beanName);
+        }
+    }
+
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/springapp/animals/Cat.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springapp.animals;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Cat {
+
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/springapp/animals/Dog.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springapp.animals;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Dog {
+
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/springapp/flowers/Rose.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springapp.flowers;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Rose {
+
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/springbootapp/SpringBootComponentScanApp.java

@@ -0,0 +1,34 @@
+package com.baeldung.componentscan.springbootapp;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+
+import com.baeldung.componentscan.ExampleBean;
+
+@SpringBootApplication
+// @ComponentScan(basePackages = "com.baeldung.componentscan.springbootapp.animals")
+// @ComponentScan ( excludeFilters = @ComponentScan.Filter(type=FilterType.REGEX,pattern="com\\.baeldung\\.componentscan\\.springbootapp\\.flowers\\..*"))
+// @ComponentScan(excludeFilters = @ComponentScan.Filter(type = FilterType.ASSIGNABLE_TYPE, value = Rose.class))
+
+public class SpringBootComponentScanApp {
+    private static ApplicationContext applicationContext;
+
+    @Bean
+    public ExampleBean exampleBean() {
+        return new ExampleBean();
+    }
+
+    public static void main(String[] args) {
+        applicationContext = SpringApplication.run(SpringBootComponentScanApp.class, args);
+        checkBeansPresence("cat", "dog", "rose", "exampleBean", "springBootApp");
+
+    }
+
+    private static void checkBeansPresence(String... beans) {
+        for (String beanName : beans) {
+            System.out.println("Is " + beanName + " in ApplicationContext: " + applicationContext.containsBean(beanName));
+        }
+    }
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/springbootapp/animals/Cat.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springbootapp.animals;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Cat {
+
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/springbootapp/animals/Dog.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springbootapp.animals;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Dog {
+
+}

spring-boot-di/src/main/java/com/baeldung/componentscan/springbootapp/flowers/Rose.java

@@ -0,0 +1,8 @@
+package com.baeldung.componentscan.springbootapp.flowers;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class Rose {
+
+}