# Getting Started

## What This Project Does
This repository is a small Java codebase made up of simple domain-style classes, a lightweight processor, and a minimal service. It looks optimized for examples, source analysis, or tooling exercises rather than a full application stack. Most of the code is plain data modeling with very little control flow.

## Recommended Reading Order
1. [Repository overview](../overview.md) — start here for the big-picture summary.
2. [`OrderProcessor`](../../src/main/java/OrderProcessor.java) — the clearest example of actual behavior.
3. [`ProductService`](../../src/main/java/ProductService.java) — the other small behavioral entry point.
4. [`LargeFieldMap`](../../src/main/java/LargeFieldMap.java), [`PartialLabelEntity`](../../src/main/java/PartialLabelEntity.java), and [`MixedLabelClass`](../../src/main/java/MixedLabelClass.java) — learn the field and labeling conventions.
5. [`EucJpClass`](../../src/main/java/EucJpClass.java), [`MultiPattern`](../../src/main/java/MultiPattern.java), and [`LargeBusinessLabelClass`](../../src/main/java/LargeBusinessLabelClass.java) — review the broader examples and comment styles.

## Key Entry Points
There are no highly connected classes in the generated index, so start with the small behavior-focused classes:

- [`OrderProcessor`](../../src/main/java/OrderProcessor.java) — exposes `createOrder(String)` and is the best place to see how the codebase handles a simple operation.
- [`ProductService`](../../src/main/java/ProductService.java) — exposes `getProduct()` and shows the service-style pattern used here.

Everything else appears to be supporting sample code or field-mapping examples rather than core behavior.

## Project Structure
The repository is effectively flat:

- `.codewiki/` — generated documentation and navigation files.
- `src/main/java/` — the Java source files.
- No deeper package tree is visible in the generated index, so the code appears to live directly in the root module.

A quick map of the source layout:

```mermaid
flowchart LR
Root["root module"] --> OrderProcessor["OrderProcessor"]
Root --> ProductService["ProductService"]
Root --> LargeFieldMap["LargeFieldMap"]
Root --> PartialLabelEntity["PartialLabelEntity"]
Root --> MixedLabelClass["MixedLabelClass"]
Root --> EucJpClass["EucJpClass"]
Root --> MultiPattern["MultiPattern"]
Root --> LargeBusinessLabelClass["LargeBusinessLabelClass"]
Root --> A["A"]
```

## Configuration
No build tool, framework config, or runtime configuration files are exposed in the current index. In practice, that means:

- There is no visible `pom.xml`, `build.gradle`, or similar build descriptor in the generated docs.
- There are no obvious application property files or environment-driven settings.
- The important “configuration” here is the source itself: inline comments, field names, and class structure.

If you add or discover build tooling later, document it alongside the source file that consumes it.

## Common Patterns
A few patterns repeat throughout the codebase:

- **Plain Java classes** — classes are small and direct, with no visible framework annotations.
- **Minimal methods** — behavior is limited to simple accessors or one-line operations.
- **Field-centric examples** — several classes mainly demonstrate labeled fields and naming conventions.
- **Mixed comment styles** — English Javadoc appears in [`OrderProcessor`](../../src/main/java/OrderProcessor.java), while [`LargeBusinessLabelClass`](../../src/main/java/LargeBusinessLabelClass.java) uses repeated Japanese inline labels.

## Where to Go Next
If you want to understand the repo quickly, read [`OrderProcessor`](../../src/main/java/OrderProcessor.java) and [`ProductService`](../../src/main/java/ProductService.java) first, then scan the field-heavy classes to learn the source patterns. If your goal is documentation or tooling work, pay special attention to the comments and label text embedded in the Java files.