# Repository Overview

## Welcome

Hi there, and welcome to the **Optage Mini Fixture** codebase. This repository serves as a compact test fixture for SPEC-SCOPED-WIKI tooling — it provides a realistic Java project structure (Maven, `com.optage.kopt` package) with a handful of classes that form a lightweight batch-and-SOD processing skeleton. The classes are auto-generated stubs, but the directory layout and inter-class wiring intentionally mirror the shape of a real enterprise Java application. If you're exploring this repo as a new team member, think of it as a sandbox for understanding how the batch orchestration and SOD (Send-Out-Data) dispatch workflows hang together.

---

## Technology Stack

| Layer | Technology |
|-------|-----------|
| Build tool | Maven (POM-based) |
| Language | Java |
| Packaging | JAR (`com.optage.kopt:optage-mini-fixture:1.0.0-SPEC-SCOPED-WIKI`) |
| Test framework | JUnit 4 (used in the `bp` test class) |

No well-known web frameworks, ORM libraries, or third-party dependencies are declared. This project is deliberately lightweight — its purpose is structural, not functional.

---

## Architecture

Below is a high-level view of the modules and how they wire together:

```mermaid
flowchart TD
    subgraph batch["batch (batch entry point)"]
        KKPRC14901["KKPRC14901"]
    end

    subgraph bp["bp (SOD processing)"]
        JKKHakkoSODCC["JKKHakkoSODCC"]
        JKKSodSendCC["JKKSodSendCC"]
        JKKHakkoSODHelper["JKKHakkoSODHelper"]
        JKKBpServiceBase["JKKBpServiceBase"]
    end

    subgraph dto["dto (data transfer)"]
        JKKSodRequestDTO["JKKSodRequestDTO"]
        JKKSodResponseDTO["JKKSodResponseDTO"]
    end

    subgraph ekk["ekk (contract processing)"]
        EKK0301A010["EKK0301A010"]
    end

    subgraph kkw["kkw (trigger module)"]
        KKW0100B001["KKW0100B001"]
    end

    subgraph esc["esc"]
        ESC0101B001["ESC0101B001"]
    end

    subgraph test["test"]
        JKKHakkoSODCCTest["JKKHakkoSODCCTest"]
    end

    KKPRC14901 --> EKK0301A010
    JKKHakkoSODCC --> JKKSodSendCC
    JKKHakkoSODCC --> KKPRC14901
    EKK0301A010 --> KKW0100B001
    JKKHakkoSODCCTest --> JKKHakkoSODCC
```

**How to read this diagram:**

- **`batch`** is the top-level module entry point. Its `KKPRC14901.run()` method delegates to the `ekk` module, creating the first hand-off chain.
- **`bp`** is the SOD (Send-Out-Data) processing pipeline. `JKKHakkoSODCC` is the central controller: it validates via `KKPRC14901`, dispatches via `JKKSodSendCC`, and offers helper utilities via `JKKHakkoSODHelper`. A base class `JKKBpServiceBase` is available for shared initialization.
- **`dto`** holds simple data-transfer objects (`JKKSodRequestDTO`, `JKKSodResponseDTO`) with string fields like `tenantId` and `serviceId`.
- **`ekk`** contains contract-processing classes. `EKK0301A010` is the primary processor; its `notify()` method in turn triggers `KKW0100B001`.
- **`kkw`** provides a trigger-like class (`KKW0100B001`) invoked from the `ekk` module.
- **`esc`** and **`unrelated`** are additional stub modules with single classes each.
- **`test`** contains one JUnit test (`JKKHakkoSODCCTest`) for the `bp` controller.

---

## Module Guide

### `com.optage.kopt.batch`

The batch module is the repository's top-level module and the starting point for batch orchestration. It contains three classes:

- **`KKPRC14901`** — The most functional fixture. Its `run()` method instantiates `EKK0301A010` and calls `process()`, making it the bridge from batch-level orchestration into the `ekk` subsystem. The `check()` method is currently a no-op stub.
- **`KKPRC24901`** and **`KKPRC34901`** — Minimal placeholder classes labeled "secondary batch" and "tertiary batch." Their `run()` methods contain no active logic and serve as structural scaffolding.

All classes in this module are auto-generated fixtures for SPEC-SCOPED-WIKI tests, so their implementations are stubs until further code is added.

*See [com/optage/kopt/batch](com/optage/kopt/batch) for the full module doc.*

### `com.optage.kopt.bp`

The `bp` package is a child of the batch module and implements the SOD (Send-Out-Data) dispatch pipeline. Its key class, `JKKHakkoSODCC`, orchestrates three steps:

1. **Validate** — calls `KKPRC14901.check()` from the batch module.
2. **Dispatch** — creates `JKKSodSendCC` and calls `send()` to transmit SOD data.
3. **Format** — data can be normalized via `JKKHakkoSODHelper.format()`, which trims input strings.

`JKKBpServiceBase` provides a protected `baseInit()` hook for shared setup, and `JKKHakkoSODCCTest` is the accompanying JUnit 4 test (currently a placeholder `assertTrue(true)`).

*See [com/optage/kopt/bp](com/optage/kopt/bp) for the full module doc.*

### `com.optage.kopt.ekk`

The `ekk` package handles contract-related processing. Its primary class, `EKK0301A010`, exposes a `process()` method (called from `KKPRC14901`) and a `notify()` method that delegates to `KKW0100B001.trigger()`. `EKK0301A020` is a secondary fixture with no active logic.

### `com.optage.kopt.dto`

Simple data-transfer objects carrying SOD request/response data. `JKKSodRequestDTO` has `tenantId` and `serviceId` fields; `JKKSodResponseDTO` is its counterpart. These classes contain only field declarations and no behavior.

### `com.optage.kopt.kkw`

A lightweight trigger module. `KKW0100B001` provides a `trigger()` method that `EKK0301A010.notify()` calls into. Its implementation is a stub.

### `com.optage.kopt.esc`

Contains `ESC0101B001`, a single-class stub module with no active code path.

### `com.optage.kopt.unrelated`

Contains `XYZ99999Unrelated` — a standalone stub placed here to exercise path resolution. It has no dependencies on other modules.

---

## Getting Started

If you're exploring this codebase for the first time, here's a recommended reading order:

1. **`pom.xml`** — Understand the Maven coordinates and build configuration.
2. **`src/main/java/com/optage/kopt/batch/KKPRC14901.java`** — The primary batch entry point. Its `run()` method is the first active code path in the project.
3. **`src/main/java/com/optage/kopt/ekk/EKK0301A010.java`** — The contract processor that `KKPRC14901` delegates to. Follow the chain from there into `KKW0100B001`.
4. **`src/main/java/com/optage/kopt/bp/JKKHakkoSODCC.java`** — The SOD dispatch controller. Read its `validate()` and `dispatch()` methods to see how batch and SOD pipelines intersect.
5. **`src/main/java/com/optage/kopt/bp/JKKHakkoSODCCTest.java`** — The only test class. It's a placeholder but shows how to wire up JUnit 4 against the `bp` controller.
6. **`src/main/java/com/optage/kopt/dto/`** — Review the DTOs to understand the data shapes flowing through the SOD pipeline.

### Entry points summary

| Class | File | Entry method |
|-------|------|-------------|
| `KKPRC14901` | `batch/KKPRC14901.java` | `run()` |
| `KKPRC24901` | `batch/KKPRC24901.java` | `run()` |
| `KKPRC34901` | `batch/KKPRC34901.java` | `run()` |
| `EKK0301A010` | `ekk/EKK0301A010.java` | `process()`, `notify()` |
| `KKW0100B001` | `kkw/KKW0100B001.java` | `trigger()` |
| `JKKHakkoSODCC` | `bp/JKKHakkoSODCC.java` | `validate()`, `dispatch()` |
| `JKKHakkoSODHelper` | `bp/JKKHakkoSODHelper.java` | `format()` |
| `JKKSodSendCC` | `bp/JKKSodSendCC.java` | `send()` |

### Notes for developers

- **Everything is a fixture.** All classes carry the comment `auto-generated fixture class for SPEC-SCOPED-WIKI tests`. Treat them as scaffolding until active implementations are added.
- **No dependencies.** The project declares no external libraries in its `pom.xml`. Everything is hand-written and self-contained.
- **Package conventions.** The `bp` suffix likely stands for "batch process." Classes use a `J` prefix (for Japanese/internal) and four-digit codes (e.g., `KKPRC`, `JKKHakko`).
- **Test gap.** Only one test class exists (`JKKHakkoSODCCTest`) and it is a no-op assertion. Meaningful tests should be written as implementations are fleshed out.