# pd172060-collab/deutschlernen architecture

> Architecture diagram of the GitHub repository pd172060-collab/deutschlernen, generated by GitDiagram from its file tree, README and a sample of source files (last updated 2026-10-16). It is an AI-made overview: check details against the source.

- Interactive diagram: https://gitdiagram.com/pd172060-collab/deutschlernen
- Repository: https://github.com/pd172060-collab/deutschlernen

## Overview

Deutschlernen is a German-learning web application. Its apparent user workflow is browsing modules, lessons, topics and slides, then taking quizzes or module tests and reviewing results or progress on a dashboard. The tree suggests Spring MVC controllers, services, repositories and JSP views, but the only source excerpt is a small navigation-highlighting script; the README gives no architectural detail. Accordingly, relationships below are dashed and unverified rather than presented as inspected call paths.

Main entry points: [`src/main/webapp/WEB-INF/views`](https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/webapp/WEB-INF/views) (JSP views), [`src/main/java/com/example/germanlearning/service`](https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/java/com/example/germanlearning/service) (Content services), [`src/main/java/com/example/germanlearning/controller/ModuleController.java`](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/ModuleController.java) (Modules), [`src/main/java/com/example/germanlearning/controller/LessonController.java`](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/LessonController.java) (Lessons)

## Diagram (Mermaid)

```mermaid
flowchart TD

subgraph group_content["Learning content"]
  node_content_init["Content initialization"]
  node_module["Modules"]
  node_lesson["Lessons"]
  node_topic["Topics"]
  node_slide["Slide viewer"]
  node_content_services["Content services"]
  node_content_store["Content repositories"]
end

subgraph group_assessment["Quizzes and tests"]
  node_question_init["Question initialization"]
  node_quiz["Quizzes"]
  node_quiz_service["Quiz assessment"]
  node_module_test["Module tests"]
  node_test_service["Test assessment"]
  node_assessment_store[("Assessment repositories")]
end

subgraph group_progress["Progress and dashboard"]
  node_dashboard["Dashboard"]
  node_dashboard_service["Dashboard summary"]
  node_progress_service["User progress"]
  node_progress_store[("Progress repository")]
end

subgraph group_web["Web application"]
  node_app["Application startup"]
  node_views["JSP views"]
  node_navigation["Navigation script<br/>[main.js]"]
end

node_learner(("Learner"))

node_learner -.->|"browses"| node_module
node_learner -.->|"opens lesson"| node_lesson
node_learner -.->|"opens topic"| node_topic
node_learner -.->|"views slides"| node_slide
node_learner -.->|"takes quiz"| node_quiz
node_learner -.->|"takes test"| node_module_test
node_learner -.->|"views progress"| node_dashboard
node_module -.->|"delegates to"| node_content_services
node_lesson -.->|"delegates to"| node_content_services
node_topic -.->|"delegates to"| node_content_services
node_slide -.->|"delegates to"| node_content_services
node_content_services -.->|"reads content"| node_content_store
node_quiz -.->|"delegates to"| node_quiz_service
node_quiz_service -.->|"reads and writes"| node_assessment_store
node_module_test -.->|"delegates to"| node_test_service
node_test_service -.->|"reads and writes"| node_assessment_store
node_dashboard -.->|"delegates to"| node_dashboard_service
node_dashboard_service -.->|"gets progress"| node_progress_service
node_progress_service -.->|"reads and writes"| node_progress_store
node_module -.->|"renders"| node_views
node_lesson -.->|"renders"| node_views
node_topic -.->|"renders"| node_views
node_slide -.->|"renders"| node_views
node_quiz -.->|"renders"| node_views
node_module_test -.->|"renders"| node_views
node_dashboard -.->|"renders"| node_views
node_app -.->|"initializes"| node_content_init
node_app -.->|"initializes"| node_question_init

click node_app "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/GermanLearningApplication.java"
click node_content_init "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/config/DataInitializer.java"
click node_question_init "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/config/QuestionBankInitializer.java"
click node_module "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/ModuleController.java"
click node_lesson "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/LessonController.java"
click node_topic "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/TopicController.java"
click node_slide "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/SlideController.java"
click node_content_services "https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/java/com/example/germanlearning/service"
click node_content_store "https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/java/com/example/germanlearning/repository"
click node_quiz "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/QuizController.java"
click node_quiz_service "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/service/impl/QuizServiceImpl.java"
click node_module_test "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/ModuleTestController.java"
click node_test_service "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/service/impl/ModuleTestServiceImpl.java"
click node_assessment_store "https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/java/com/example/germanlearning/repository"
click node_dashboard "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/DashboardController.java"
click node_dashboard_service "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/service/impl/DashboardServiceImpl.java"
click node_progress_service "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/service/impl/UserProgressServiceImpl.java"
click node_progress_store "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/repository/UserProgressRepository.java"
click node_views "https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/webapp/WEB-INF/views"
click node_navigation "https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/resources/static/js/main.js"

classDef toneNeutral fill:#f8fafc,stroke:#334155,stroke-width:1.5px,color:#0f172a
classDef toneBlue fill:#dbeafe,stroke:#2563eb,stroke-width:1.5px,color:#172554
classDef toneAmber fill:#fef3c7,stroke:#d97706,stroke-width:1.5px,color:#78350f
classDef toneMint fill:#dcfce7,stroke:#16a34a,stroke-width:1.5px,color:#14532d
classDef toneRose fill:#ffe4e6,stroke:#e11d48,stroke-width:1.5px,color:#881337
classDef toneIndigo fill:#e0e7ff,stroke:#4f46e5,stroke-width:1.5px,color:#312e81
classDef toneTeal fill:#ccfbf1,stroke:#0f766e,stroke-width:1.5px,color:#134e4a
class node_content_init,node_module,node_lesson,node_topic,node_slide,node_content_services,node_content_store toneBlue
class node_question_init,node_quiz,node_quiz_service,node_module_test,node_test_service,node_assessment_store toneAmber
class node_dashboard,node_dashboard_service,node_progress_service,node_progress_store toneMint
class node_app,node_views,node_navigation toneRose
class node_learner toneIndigo
```

## Components

### Learning content

- [Content initialization](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/config/DataInitializer.java): `src/main/java/com/example/germanlearning/config/DataInitializer.java`
- [Modules](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/ModuleController.java): `src/main/java/com/example/germanlearning/controller/ModuleController.java`
- [Lessons](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/LessonController.java): `src/main/java/com/example/germanlearning/controller/LessonController.java`
- [Topics](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/TopicController.java): `src/main/java/com/example/germanlearning/controller/TopicController.java`
- [Slide viewer](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/SlideController.java): `src/main/java/com/example/germanlearning/controller/SlideController.java`
- [Content services](https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/java/com/example/germanlearning/service): `src/main/java/com/example/germanlearning/service`
- [Content repositories](https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/java/com/example/germanlearning/repository): `src/main/java/com/example/germanlearning/repository`

### Quizzes and tests

- [Question initialization](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/config/QuestionBankInitializer.java): `src/main/java/com/example/germanlearning/config/QuestionBankInitializer.java`
- [Quizzes](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/QuizController.java): `src/main/java/com/example/germanlearning/controller/QuizController.java`
- [Quiz assessment](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/service/impl/QuizServiceImpl.java): `src/main/java/com/example/germanlearning/service/impl/QuizServiceImpl.java`
- [Module tests](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/ModuleTestController.java): `src/main/java/com/example/germanlearning/controller/ModuleTestController.java`
- [Test assessment](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/service/impl/ModuleTestServiceImpl.java): `src/main/java/com/example/germanlearning/service/impl/ModuleTestServiceImpl.java`
- [Assessment repositories](https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/java/com/example/germanlearning/repository): `src/main/java/com/example/germanlearning/repository`

### Progress and dashboard

- [Dashboard](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/controller/DashboardController.java): `src/main/java/com/example/germanlearning/controller/DashboardController.java`
- [Dashboard summary](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/service/impl/DashboardServiceImpl.java): `src/main/java/com/example/germanlearning/service/impl/DashboardServiceImpl.java`
- [User progress](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/service/impl/UserProgressServiceImpl.java): `src/main/java/com/example/germanlearning/service/impl/UserProgressServiceImpl.java`
- [Progress repository](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/repository/UserProgressRepository.java): `src/main/java/com/example/germanlearning/repository/UserProgressRepository.java`

### Web application

- [Application startup](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/java/com/example/germanlearning/GermanLearningApplication.java): `src/main/java/com/example/germanlearning/GermanLearningApplication.java`
- [JSP views](https://github.com/pd172060-collab/deutschlernen/tree/main/src/main/webapp/WEB-INF/views): `src/main/webapp/WEB-INF/views`
- [Navigation script](https://github.com/pd172060-collab/deutschlernen/blob/main/src/main/resources/static/js/main.js): `src/main/resources/static/js/main.js`

### Other components

- **Learner**

## Connections

- Learner → Modules: browses
- Learner → Lessons: opens lesson
- Learner → Topics: opens topic
- Learner → Slide viewer: views slides
- Learner → Quizzes: takes quiz
- Learner → Module tests: takes test
- Learner → Dashboard: views progress
- Modules → Content services: delegates to
- Lessons → Content services: delegates to
- Topics → Content services: delegates to
- Slide viewer → Content services: delegates to
- Content services → Content repositories: reads content
- Quizzes → Quiz assessment: delegates to
- Quiz assessment → Assessment repositories: reads and writes
- Module tests → Test assessment: delegates to
- Test assessment → Assessment repositories: reads and writes
- Dashboard → Dashboard summary: delegates to
- Dashboard summary → User progress: gets progress
- User progress → Progress repository: reads and writes
- Modules → JSP views: renders
- Lessons → JSP views: renders
- Topics → JSP views: renders
- Slide viewer → JSP views: renders
- Quizzes → JSP views: renders
- Module tests → JSP views: renders
- Dashboard → JSP views: renders
- Application startup → Content initialization: initializes
- Application startup → Question initialization: initializes