Generate LangChain4j sample

src/main/java/tech/jhipster/lite/generator/server/springboot/mvc/sample/langchain4j/application/SampleLangChain4jApplicationService.java

@@ -0,0 +1,20 @@
+package tech.jhipster.lite.generator.server.springboot.mvc.sample.langchain4j.application;
+
+import org.springframework.stereotype.Service;
+import tech.jhipster.lite.generator.server.springboot.mvc.sample.langchain4j.domain.SampleLangChain4jModuleFactory;
+import tech.jhipster.lite.module.domain.JHipsterModule;
+import tech.jhipster.lite.module.domain.properties.JHipsterModuleProperties;
+
+@Service
+public class SampleLangChain4jApplicationService {
+
+  private final SampleLangChain4jModuleFactory factory;
+
+  public SampleLangChain4jApplicationService() {
+    factory = new SampleLangChain4jModuleFactory();
+  }
+
+  public JHipsterModule buildModule(JHipsterModuleProperties properties) {
+    return factory.buildModule(properties);
+  }
+}

src/main/java/tech/jhipster/lite/generator/server/springboot/mvc/sample/langchain4j/domain/SampleLangChain4jModuleFactory.java

@@ -0,0 +1,34 @@
+package tech.jhipster.lite.generator.server.springboot.mvc.sample.langchain4j.domain;
+
+import static tech.jhipster.lite.module.domain.JHipsterModule.from;
+import static tech.jhipster.lite.module.domain.JHipsterModule.moduleBuilder;
+import static tech.jhipster.lite.module.domain.JHipsterModule.toSrcMainJava;
+
+import tech.jhipster.lite.module.domain.JHipsterModule;
+import tech.jhipster.lite.module.domain.file.JHipsterSource;
+import tech.jhipster.lite.module.domain.properties.JHipsterModuleProperties;
+import tech.jhipster.lite.shared.error.domain.Assert;
+
+public class SampleLangChain4jModuleFactory {
+
+  private static final JHipsterSource SOURCE = from("server/springboot/mvc/sample/langchain4j");
+
+  private static final String SECONDARY = "infrastructure/secondary";
+  private static final String SECONDARY_DESTINATION = "sample/" + SECONDARY;
+
+  public JHipsterModule buildModule(JHipsterModuleProperties properties) {
+    Assert.notNull("properties", properties);
+
+    String packagePath = properties.packagePath();
+
+    //@formatter:off
+    return moduleBuilder(properties)
+      .files()
+        .batch(SOURCE.append("main").append(SECONDARY), toSrcMainJava().append(packagePath).append(SECONDARY_DESTINATION))
+          .addTemplate("ChatController.java.mustache")
+          .and()
+        .and()
+      .build();
+    //@formatter:on
+  }
+}

src/main/java/tech/jhipster/lite/generator/server/springboot/mvc/sample/langchain4j/infrastructure/primary/SampleLangChain4jModuleConfiguration.java

@@ -0,0 +1,29 @@
+package tech.jhipster.lite.generator.server.springboot.mvc.sample.langchain4j.infrastructure.primary;
+
+import static tech.jhipster.lite.shared.slug.domain.JHLiteFeatureSlug.SPRING_MVC_SERVER;
+import static tech.jhipster.lite.shared.slug.domain.JHLiteModuleSlug.*;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import tech.jhipster.lite.generator.server.springboot.mvc.sample.langchain4j.application.SampleLangChain4jApplicationService;
+import tech.jhipster.lite.generator.server.springboot.mvc.sample.langchain4j.domain.SampleLangChain4jModuleFactory;
+import tech.jhipster.lite.module.domain.resource.JHipsterModuleOrganization;
+import tech.jhipster.lite.module.domain.resource.JHipsterModulePropertiesDefinition;
+import tech.jhipster.lite.module.domain.resource.JHipsterModuleResource;
+
+@Configuration
+class SampleLangChain4jModuleConfiguration {
+
+  @Bean
+  JHipsterModuleResource langChain4jResourceInit(SampleLangChain4jApplicationService applicationService) {
+    return JHipsterModuleResource.builder()
+      .slug(SPRING_BOOT_LANGCHAIN4J_SAMPLE)
+      .propertiesDefinition(
+        JHipsterModulePropertiesDefinition.builder().addBasePackage().addIndentation().addSpringConfigurationFormat().build()
+      )
+      .apiDoc("Spring Boot - LangChain4j", "Add LangChain4j sample")
+      .organization(JHipsterModuleOrganization.builder().addDependency(SPRING_MVC_SERVER).addDependency(LANGCHAIN4J).build())
+      .tags("spring-boot", "spring", "server", "langchain4j")
+      .factory(applicationService::buildModule);
+  }
+}

src/main/java/tech/jhipster/lite/generator/server/springboot/mvc/sample/langchain4j/package-info.java

@@ -0,0 +1,2 @@
+@tech.jhipster.lite.BusinessContext
+package tech.jhipster.lite.generator.server.springboot.mvc.sample.langchain4j;

src/main/java/tech/jhipster/lite/shared/slug/domain/JHLiteModuleSlug.java

@@ -157,7 +157,8 @@ public enum JHLiteModuleSlug implements JHipsterModuleSlugFactory {
   VUE_PINIA("vue-pinia"),
   TS_PAGINATION_DOMAIN("ts-pagination-domain"),
   TS_REST_PAGINATION("ts-rest-pagination"),
-  LANGCHAIN4J("langchain4j");
+  LANGCHAIN4J("langchain4j"),
+  SPRING_BOOT_LANGCHAIN4J_SAMPLE("spring-boot-langchain4j-sample");
 
   private static final Map<String, JHLiteModuleSlug> moduleSlugMap = Stream.of(values()).collect(
     Collectors.toMap(JHLiteModuleSlug::get, Function.identity())

src/main/resources/generator/server/springboot/mvc/sample/langchain4j/main/infrastructure/secondary/ChatController.java.mustache

@@ -0,0 +1,21 @@
+package {{packageName}}.sample.infrastructure.secondary;
+
+import dev.langchain4j.model.chat.ChatLanguageModel;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+public class ChatController {
+
+    ChatLanguageModel chatLanguageModel;
+
+    public ChatController(ChatLanguageModel chatLanguageModel) {
+        this.chatLanguageModel = chatLanguageModel;
+    }
+
+    @GetMapping("/chat")
+    public String model(@RequestParam(value = "message", defaultValue = "Hello") String message) {
+        return chatLanguageModel.generate(message);
+    }
+}

src/test/java/tech/jhipster/lite/generator/server/springboot/mvc/sample/jpapersistence/domain/SampleJpaPersistenceModuleFactoryTest.java → src/test/java/tech/jhipster/lite/generator/server/springboot/mvc/sample/jpapersistence/domain/SampleLangChain4jModuleFactoryTest.java

@@ -10,7 +10,7 @@
 import tech.jhipster.lite.module.domain.properties.JHipsterModuleProperties;
 
 @UnitTest
-class SampleJpaPersistenceModuleFactoryTest {
+class SampleLangChain4jModuleFactoryTest {
 
   private static final SampleJpaPersistenceModuleFactory factory = new SampleJpaPersistenceModuleFactory();