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

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

cdi/src/main/java/com/baeldung/cdi2observers/application/BootstrappingApplication.java

@@ -0,0 +1,16 @@
+package com.baeldung.cdi2observers.application;
+
+import com.baeldung.cdi2observers.events.ExampleEvent;
+
+import javax.enterprise.inject.se.SeContainer;
+import javax.enterprise.inject.se.SeContainerInitializer;
+
+public class BootstrappingApplication {
+    
+    public static void main(String... args) {
+        SeContainerInitializer containerInitializer = SeContainerInitializer.newInstance();
+        try (SeContainer container = containerInitializer.initialize()) {
+            container.getBeanManager().fireEvent(new ExampleEvent("Welcome to Baeldung!"));
+        }
+    }
+}

cdi/src/main/java/com/baeldung/cdi2observers/events/ExampleEvent.java

@@ -0,0 +1,14 @@
+package com.baeldung.cdi2observers.events;
+
+public class ExampleEvent {
+    
+   private final String eventMessage;
+
+    public ExampleEvent(String eventMessage) {
+        this.eventMessage = eventMessage;
+    }
+    
+    public String getEventMessage() {
+        return eventMessage;
+    }
+}

cdi/src/main/java/com/baeldung/cdi2observers/events/ExampleEventSource.java

@@ -0,0 +1,14 @@
+package com.baeldung.cdi2observers.events;
+
+import javax.enterprise.event.Event;
+import javax.inject.Inject;
+
+public class ExampleEventSource {
+    
+    @Inject
+    Event<ExampleEvent> exampleEvent;
+    
+    public void fireEvent() {
+        exampleEvent.fireAsync(new ExampleEvent("Welcome to Baeldung!"));
+    }   
+}

cdi/src/main/java/com/baeldung/cdi2observers/observers/AnotherExampleEventObserver.java

@@ -0,0 +1,13 @@
+package com.baeldung.cdi2observers.observers;
+
+import com.baeldung.cdi2observers.events.ExampleEvent;
+
+import javax.annotation.Priority;
+import javax.enterprise.event.Observes;
+
+public class AnotherExampleEventObserver {
+    
+    public String onEvent(@Observes @Priority(2) ExampleEvent event) {
+        return event.getEventMessage();
+    }   
+}

cdi/src/main/java/com/baeldung/cdi2observers/observers/ExampleEventObserver.java

@@ -0,0 +1,13 @@
+package com.baeldung.cdi2observers.observers;
+
+import com.baeldung.cdi2observers.events.ExampleEvent;
+import com.baeldung.cdi2observers.services.TextService;
+import javax.annotation.Priority;
+import javax.enterprise.event.Observes;
+
+public class ExampleEventObserver {
+    
+    public String onEvent(@Observes @Priority(1) ExampleEvent event, TextService textService) {
+        return textService.parseText(event.getEventMessage());
+    } 
+}

cdi/src/main/java/com/baeldung/cdi2observers/services/TextService.java

@@ -0,0 +1,8 @@
+package com.baeldung.cdi2observers.services;
+
+public class TextService {
+
+    public String parseText(String text) {
+        return text.toUpperCase();
+    }
+}

cdi/src/main/java/com/baeldung/dependencyinjection/application/FileApplication.java

@@ -0,0 +1,18 @@
+package com.baeldung.dependencyinjection.application;
+
+import com.baeldung.dependencyinjection.imageprocessors.ImageFileProcessor;
+import org.jboss.weld.environment.se.Weld;
+import org.jboss.weld.environment.se.WeldContainer;
+
+public class FileApplication {
+    
+    public static void main(String[] args) {
+        Weld weld = new Weld();
+        WeldContainer container = weld.initialize();
+        ImageFileProcessor imageFileProcessor = container.select(ImageFileProcessor.class).get();
+        System.out.println(imageFileProcessor.openFile("file1.png"));
+        System.out.println(imageFileProcessor.writeFile("file1.png"));
+        System.out.println(imageFileProcessor.saveFile("file1.png"));
+        container.shutdown();
+    }
+}

cdi/src/main/java/com/baeldung/dependencyinjection/factories/TimeLoggerFactory.java

@@ -0,0 +1,14 @@
+package com.baeldung.dependencyinjection.factories;
+
+import com.baeldung.dependencyinjection.loggers.TimeLogger;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import javax.enterprise.inject.Produces;
+
+public class TimeLoggerFactory {
+    
+    @Produces
+    public TimeLogger getTimeLogger() {
+        return new TimeLogger(new SimpleDateFormat("HH:mm"), Calendar.getInstance());
+    }
+}

cdi/src/main/java/com/baeldung/dependencyinjection/imagefileeditors/GifFileEditor.java

@@ -0,0 +1,27 @@
+package com.baeldung.dependencyinjection.imagefileeditors;
+
+import com.baeldung.dependencyinjection.qualifiers.GifFileEditorQualifier;
+
+@GifFileEditorQualifier
+public class GifFileEditor implements ImageFileEditor {
+    
+    @Override
+    public String openFile(String fileName) {
+        return "Opening GIF file " + fileName;
+    }
+
+    @Override
+    public String editFile(String fileName) {
+        return "Editing GIF file " + fileName;
+    }
+    
+    @Override
+    public String writeFile(String fileName) {
+        return "Writing GIF file " + fileName;
+    }
+
+    @Override
+    public String saveFile(String fileName) {
+        return "Saving GIF file " + fileName;
+    }
+}

cdi/src/main/java/com/baeldung/dependencyinjection/imagefileeditors/ImageFileEditor.java

@@ -0,0 +1,12 @@
+package com.baeldung.dependencyinjection.imagefileeditors;
+
+public interface ImageFileEditor {
+    
+    String openFile(String fileName);
+    
+    String editFile(String fileName);
+    
+    String writeFile(String fileName);
+    
+    String saveFile(String fileName);
+}

cdi/src/main/java/com/baeldung/dependencyinjection/imagefileeditors/JpgFileEditor.java

@@ -0,0 +1,27 @@
+package com.baeldung.dependencyinjection.imagefileeditors;
+
+import com.baeldung.dependencyinjection.qualifiers.JpgFileEditorQualifier;
+
+@JpgFileEditorQualifier
+public class JpgFileEditor implements ImageFileEditor {
+   
+    @Override
+    public String openFile(String fileName) {
+        return "Opening JPG file " + fileName;
+    }
+
+    @Override
+    public String editFile(String fileName) {
+        return "Editing JPG file " + fileName;
+    }
+    
+    @Override
+    public String writeFile(String fileName) {
+        return "Writing JPG file " + fileName;
+    }
+
+    @Override
+    public String saveFile(String fileName) {
+        return "Saving JPG file " + fileName;
+    }
+}

cdi/src/main/java/com/baeldung/dependencyinjection/imagefileeditors/PngFileEditor.java

@@ -0,0 +1,27 @@
+package com.baeldung.dependencyinjection.imagefileeditors;
+
+import com.baeldung.dependencyinjection.qualifiers.PngFileEditorQualifier;
+
+@PngFileEditorQualifier
+public class PngFileEditor implements ImageFileEditor {
+   
+    @Override
+    public String openFile(String fileName) {
+        return "Opening PNG file " + fileName;
+    }
+
+    @Override
+    public String editFile(String fileName) {
+        return "Editing PNG file " + fileName;
+    }
+    
+    @Override
+    public String writeFile(String fileName) {
+        return "Writing PNG file " + fileName;
+    }
+
+    @Override
+    public String saveFile(String fileName) {
+        return "Saving PNG file " + fileName;
+    }
+}

cdi/src/main/java/com/baeldung/dependencyinjection/imageprocessors/ImageFileProcessor.java

@@ -0,0 +1,42 @@
+package com.baeldung.dependencyinjection.imageprocessors;
+
+import com.baeldung.dependencyinjection.loggers.TimeLogger;
+import com.baeldung.dependencyinjection.qualifiers.PngFileEditorQualifier;
+import javax.inject.Inject;
+import com.baeldung.dependencyinjection.imagefileeditors.ImageFileEditor;
+
+public class ImageFileProcessor {
+    
+    private final ImageFileEditor imageFileEditor;
+    private final TimeLogger timeLogger;
+    
+    @Inject
+    public ImageFileProcessor(@PngFileEditorQualifier ImageFileEditor imageFileEditor, TimeLogger timeLogger) {
+        this.imageFileEditor = imageFileEditor;
+        this.timeLogger = timeLogger;
+    }
+    
+    public ImageFileEditor getImageFileditor() {
+        return imageFileEditor;
+    }
+    
+    public TimeLogger getTimeLogger() {
+        return timeLogger;
+    }
+    
+    public String openFile(String fileName) {
+        return imageFileEditor.openFile(fileName) + " at: " + timeLogger.getTime();
+    }
+    
+    public String editFile(String fileName) {
+        return imageFileEditor.editFile(fileName) + " at: " + timeLogger.getTime();
+    }
+     
+    public String writeFile(String fileName) {
+        return imageFileEditor.writeFile(fileName) + " at: " + timeLogger.getTime();
+    }
+    
+    public String saveFile(String fileName) {
+        return imageFileEditor.saveFile(fileName)+ " at: " + timeLogger.getTime();
+    }
+}

cdi/src/main/java/com/baeldung/dependencyinjection/loggers/TimeLogger.java

@@ -0,0 +1,19 @@
+package com.baeldung.dependencyinjection.loggers;
+
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+
+public class TimeLogger {
+    
+    private final SimpleDateFormat dateFormat;
+    private final Calendar calendar;
+    
+    public TimeLogger(SimpleDateFormat dateFormat, Calendar calendar) {
+        this.dateFormat = dateFormat;
+        this.calendar = calendar;
+    }
+    
+    public String getTime() {
+        return dateFormat.format(calendar.getTime());
+    }
+}

cdi/src/main/java/com/baeldung/dependencyinjection/qualifiers/GifFileEditorQualifier.java

@@ -0,0 +1,12 @@
+package com.baeldung.dependencyinjection.qualifiers;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.METHOD, ElementType.TYPE, ElementType.PARAMETER})
+public @interface GifFileEditorQualifier {}

cdi/src/main/java/com/baeldung/dependencyinjection/qualifiers/JpgFileEditorQualifier.java

@@ -0,0 +1,12 @@
+package com.baeldung.dependencyinjection.qualifiers;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.METHOD, ElementType.TYPE, ElementType.PARAMETER})
+public @interface JpgFileEditorQualifier {}

cdi/src/main/java/com/baeldung/dependencyinjection/qualifiers/PngFileEditorQualifier.java

@@ -0,0 +1,12 @@
+package com.baeldung.dependencyinjection.qualifiers;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+import javax.inject.Qualifier;
+
+@Qualifier
+@Retention(RetentionPolicy.RUNTIME)
+@Target({ElementType.FIELD, ElementType.METHOD, ElementType.TYPE, ElementType.PARAMETER})
+public @interface PngFileEditorQualifier {}

cdi/src/main/java/com/baeldung/interceptor/Audited.java

@@ -0,0 +1,14 @@
+package com.baeldung.interceptor;
+
+import java.lang.annotation.ElementType;
+import java.lang.annotation.Retention;
+import java.lang.annotation.RetentionPolicy;
+import java.lang.annotation.Target;
+
+import javax.interceptor.InterceptorBinding;
+
+@InterceptorBinding
+@Target({ ElementType.METHOD, ElementType.TYPE })
+@Retention(RetentionPolicy.RUNTIME)
+public @interface Audited {
+}

cdi/src/main/java/com/baeldung/interceptor/AuditedInterceptor.java

@@ -0,0 +1,20 @@
+package com.baeldung.interceptor;
+
+import javax.interceptor.AroundInvoke;
+import javax.interceptor.Interceptor;
+import javax.interceptor.InvocationContext;
+
+@Audited
+@Interceptor
+public class AuditedInterceptor {
+    public static boolean calledBefore = false;
+    public static boolean calledAfter = false;
+
+    @AroundInvoke
+    public Object auditMethod(InvocationContext ctx) throws Exception {
+        calledBefore = true;
+        Object result = ctx.proceed();
+        calledAfter = true;
+        return result;
+    }
+}

cdi/src/main/java/com/baeldung/service/SuperService.java

@@ -0,0 +1,10 @@
+package com.baeldung.service;
+
+import com.baeldung.interceptor.Audited;
+
+public class SuperService {
+    @Audited
+    public String deliverService(String uid) {
+        return uid;
+    }
+}

cdi/src/main/java/com/baeldung/spring/aspect/SpringTestAspect.java

@@ -0,0 +1,23 @@
+package com.baeldung.spring.aspect;
+
+import java.util.List;
+
+import org.aspectj.lang.ProceedingJoinPoint;
+import org.aspectj.lang.annotation.Around;
+import org.aspectj.lang.annotation.Aspect;
+import org.springframework.beans.factory.annotation.Autowired;
+
+@Aspect
+public class SpringTestAspect {
+    @Autowired
+    private List<String> accumulator;
+
+    @Around("execution(* com.baeldung.spring.service.SpringSuperService.*(..))")
+    public Object auditMethod(ProceedingJoinPoint jp) throws Throwable {
+        String methodName = jp.getSignature().getName();
+        accumulator.add("Call to " + methodName);
+        Object obj = jp.proceed();
+        accumulator.add("Method called successfully: " + methodName);
+        return obj;
+    }
+}

cdi/src/main/java/com/baeldung/spring/configuration/AppConfig.java

@@ -0,0 +1,30 @@
+package com.baeldung.spring.configuration;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.EnableAspectJAutoProxy;
+
+import com.baeldung.spring.aspect.SpringTestAspect;
+import com.baeldung.spring.service.SpringSuperService;
+
+@Configuration
+@EnableAspectJAutoProxy
+public class AppConfig {
+    @Bean
+    public SpringSuperService springSuperService() {
+        return new SpringSuperService();
+    }
+
+    @Bean
+    public SpringTestAspect springTestAspect() {
+        return new SpringTestAspect();
+    }
+
+    @Bean
+    public List<String> getAccumulator() {
+        return new ArrayList<String>();
+    }
+}

cdi/src/main/java/com/baeldung/spring/service/SpringSuperService.java

@@ -0,0 +1,7 @@
+package com.baeldung.spring.service;
+
+public class SpringSuperService {
+    public String getInfoFromService(String code) {
+        return code;
+    }
+}