# Getting Started

## What This Project Does
This codebase is a small Java project that appears to model a handful of domain objects and simple service/process classes. The current source is intentionally minimal, so the best way to get oriented is to read the classes directly and use their field names and comments to understand the naming conventions used across the project.

## Recommended Reading Order
1. **Start here:** this guide, then scan the source tree to see the available classes.
2. **Read the simple entry points first:** [`OrderProcessor`](../../src/main/java/OrderProcessor.java), [`ProductService`](../../src/main/java/ProductService.java), and [`A`](../../src/main/java/A.java).
3. **Then read the data-heavy examples:** [`LargeFieldMap`](../../src/main/java/LargeFieldMap.java), [`PartialLabelEntity`](../../src/main/java/PartialLabelEntity.java), and [`MixedLabelClass`](../../src/main/java/MixedLabelClass.java).
4. **Finish with the larger reference sample:** [`LargeBusinessLabelClass`](../../src/main/java/LargeBusinessLabelClass.java) and [`MultiPattern`](../../src/main/java/MultiPattern.java).

## Key Entry Points
There are no highly connected classes in this repository, so there is no single dominant abstraction to learn first. Instead, focus on the small set of classes that show the project's style:

- [`OrderProcessor`](../../src/main/java/OrderProcessor.java) — a simple process-oriented class with a single method.
- [`ProductService`](../../src/main/java/ProductService.java) — a tiny service-style class.
- [`LargeFieldMap`](../../src/main/java/LargeFieldMap.java) — a representative field-mapping example.
- [`PartialLabelEntity`](../../src/main/java/PartialLabelEntity.java) — shows mixed labeled and unlabeled fields.
- [`MultiPattern`](../../src/main/java/MultiPattern.java) — demonstrates inline change markers and grouped fields.

## Project Structure
The repository is very small and currently organized as a flat Java source set under `src/main/java`.

- `src/main/java/` — all Java classes live here.
- There are no submodules or layered packages visible in the current tree.
- Most files are single-purpose examples rather than a deeply interconnected application.

A few notable files:
- [`src/main/java/OrderProcessor.java`](../../src/main/java/OrderProcessor.java)
- [`src/main/java/ProductService.java`](../../src/main/java/ProductService.java)
- [`src/main/java/LargeBusinessLabelClass.java`](../../src/main/java/LargeBusinessLabelClass.java)
- [`src/main/java/LargeFieldMap.java`](../../src/main/java/LargeFieldMap.java)
- [`src/main/java/MixedLabelClass.java`](../../src/main/java/MixedLabelClass.java)

## Configuration
No explicit build, test, or application configuration files were visible in the current tree snapshot. If you are looking for project-level settings, check for common root files such as:

- `pom.xml` or `build.gradle` for build/dependency configuration
- `settings.gradle` for Gradle project layout
- `.editorconfig` for formatting rules
- `README.md` or wiki pages for usage notes

At the moment, the most useful “configuration” is the naming and comment convention in the Java files themselves.

## Common Patterns
These classes use a few repeated patterns throughout the codebase:

- **Simple POJO-style fields** — most classes are just private `String` fields with default values.
- **Inline comments as labels** — many fields have Japanese or English comments that act like metadata.
- **Minimal behavior** — methods are sparse; classes mostly hold structure rather than business logic.
- **Mixed labeling styles** — some files contain fully labeled fields, while others mix labeled and unlabeled fields.
- **Change markers in comments** — e.g. `// ANK-4494-00-00 ADD START` in [`MultiPattern`](../../src/main/java/MultiPattern.java), which suggests localized edits or tracked change blocks.

## How to Start Reading
If you are new to the codebase, read in this order:

1. [`OrderProcessor`](../../src/main/java/OrderProcessor.java)
2. [`ProductService`](../../src/main/java/ProductService.java)
3. [`LargeFieldMap`](../../src/main/java/LargeFieldMap.java)
4. [`PartialLabelEntity`](../../src/main/java/PartialLabelEntity.java)
5. [`LargeBusinessLabelClass`](../../src/main/java/LargeBusinessLabelClass.java)

That sequence gives you a quick understanding of the simple classes first, then the larger field-based patterns that dominate the repository.