recipes: quarkus works

Author: osoykan

recipes/java-recipes/build.gradle.kts

@@ -34,7 +34,6 @@ subprojects {
   }
 
   dependencies {
-    implementation(rootProject.projects.shared.domain)
     compileOnly(libs.lombok)
     annotationProcessor(libs.lombok)
   }

recipes/java-recipes/quarkus-basic-recipe/build.gradle.kts

@@ -1,6 +1,7 @@
 plugins {
   alias(libs.plugins.quarkus)
   id("org.jetbrains.kotlin.plugin.allopen") version libs.versions.kotlin
+  java
 }
 
 allOpen {
@@ -22,12 +23,12 @@ dependencies {
   implementation(libs.quarkus.rest)
   implementation(libs.quarkus.arc)
   implementation(libs.quarkus.kotlin)
-  implementation(libs.couchbase.client)
   implementation(libs.logback.classic)
   implementation(libs.slf4j.api)
   implementation(libs.kotlinx.reactor)
   implementation(libs.kotlinx.core)
-  implementation(projects.shared.application)
+  // Removed shared.application to avoid IDE launcher classpath issues
+  // implementation(projects.shared.application)
 }
 
 dependencies {

recipes/java-recipes/quarkus-basic-recipe/src/main/java/com/trendyol/stove/recipes/quarkus/EnglishGreetingService.java

@@ -0,0 +1,16 @@
+package com.trendyol.stove.recipes.quarkus;
+
+import jakarta.enterprise.context.ApplicationScoped;
+
+@ApplicationScoped
+public class EnglishGreetingService implements GreetingService {
+  @Override
+  public String greet(String name) {
+    return "Hello, " + name + "!";
+  }
+
+  @Override
+  public String getLanguage() {
+    return "English";
+  }
+}

recipes/java-recipes/quarkus-basic-recipe/src/main/java/com/trendyol/stove/recipes/quarkus/GreetingResource.java

@@ -1,5 +1,6 @@
 package com.trendyol.stove.recipes.quarkus;
 
+import jakarta.enterprise.inject.Instance;
 import jakarta.inject.Inject;
 import jakarta.ws.rs.GET;
 import jakarta.ws.rs.Path;
@@ -11,9 +12,26 @@ public class GreetingResource {
 
   @Inject HelloService helloService;
 
+  // Inject all GreetingService implementations to ensure they're registered
+  @Inject Instance<GreetingService> greetingServices;
+
+  // Inject repository to prevent dead code elimination
+  @Inject ItemRepository itemRepository;
+
   @GET
   @Produces(MediaType.TEXT_PLAIN)
   public String hello() {
     return helloService.hello();
   }
+
+  @GET
+  @Path("/greetings")
+  @Produces(MediaType.TEXT_PLAIN)
+  public String greetings() {
+    StringBuilder sb = new StringBuilder();
+    for (GreetingService gs : greetingServices) {
+      sb.append(gs.getLanguage()).append(": ").append(gs.greet("World")).append("\n");
+    }
+    return sb.toString();
+  }
 }

recipes/java-recipes/quarkus-basic-recipe/src/main/java/com/trendyol/stove/recipes/quarkus/GreetingService.java

@@ -0,0 +1,10 @@
+package com.trendyol.stove.recipes.quarkus;
+
+/**
+ * Interface for greeting services - demonstrates multiple implementations pattern.
+ */
+public interface GreetingService {
+  String greet(String name);
+  String getLanguage();
+}
+

recipes/java-recipes/quarkus-basic-recipe/src/main/java/com/trendyol/stove/recipes/quarkus/HelloService.java

@@ -1,10 +1,9 @@
 package com.trendyol.stove.recipes.quarkus;
 
-import jakarta.inject.Singleton;
-
-@Singleton
-public class HelloService {
-  public String hello() {
-    return "Hello from Quarkus Service";
-  }
+/**
+ * Interface for HelloService - using interfaces is a CDI best practice
+ * and enables type-safe testing through dynamic proxies.
+ */
+public interface HelloService {
+  String hello();
 }

recipes/java-recipes/quarkus-basic-recipe/src/main/java/com/trendyol/stove/recipes/quarkus/HelloServiceImpl.java

@@ -0,0 +1,11 @@
+package com.trendyol.stove.recipes.quarkus;
+
+import jakarta.inject.Singleton;
+
+@Singleton
+public class HelloServiceImpl implements HelloService {
+  @Override
+  public String hello() {
+    return "Hello from Quarkus Service";
+  }
+}

recipes/java-recipes/quarkus-basic-recipe/src/main/java/com/trendyol/stove/recipes/quarkus/InMemoryItemRepository.java

@@ -0,0 +1,49 @@
+package com.trendyol.stove.recipes.quarkus;
+
+import jakarta.enterprise.context.ApplicationScoped;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ConcurrentHashMap;
+
+@ApplicationScoped
+public class InMemoryItemRepository implements ItemRepository {
+
+  private final Map<String, String> items = new ConcurrentHashMap<>();
+
+  @Override
+  public void add(String id, String name) {
+    items.put(id, name);
+  }
+
+  @Override
+  public void addItem(Item item) {
+    items.put(item.getId(), item.getName());
+  }
+
+  @Override
+  public String getById(String id) {
+    return items.get(id);
+  }
+
+  @Override
+  public Item getItemById(String id) {
+    String name = items.get(id);
+    return name != null ? new Item(id, name) : null;
+  }
+
+  @Override
+  public List<String> getAllIds() {
+    return new ArrayList<>(items.keySet());
+  }
+
+  @Override
+  public void clear() {
+    items.clear();
+  }
+
+  @Override
+  public int count() {
+    return items.size();
+  }
+}

recipes/java-recipes/quarkus-basic-recipe/src/main/java/com/trendyol/stove/recipes/quarkus/Item.java

@@ -0,0 +1,27 @@
+package com.trendyol.stove.recipes.quarkus;
+
+/**
+ * Simple item class to demonstrate classloader limitations.
+ */
+public class Item {
+  private final String id;
+  private final String name;
+
+  public Item(String id, String name) {
+    this.id = id;
+    this.name = name;
+  }
+
+  public String getId() {
+    return id;
+  }
+
+  public String getName() {
+    return name;
+  }
+
+  @Override
+  public String toString() {
+    return "Item{id='" + id + "', name='" + name + "'}";
+  }
+}

recipes/java-recipes/quarkus-basic-recipe/src/main/java/com/trendyol/stove/recipes/quarkus/ItemRepository.java

@@ -0,0 +1,16 @@
+package com.trendyol.stove.recipes.quarkus;
+
+import java.util.List;
+
+/**
+ * Simple repository interface for testing cross-classloader interactions.
+ */
+public interface ItemRepository {
+  void add(String id, String name);
+  void addItem(Item item);  // Takes complex object - will fail across classloaders!
+  String getById(String id);
+  Item getItemById(String id);  // Returns complex object
+  List<String> getAllIds();
+  void clear();
+  int count();
+}