# Com / Optage / Kopt / Batch

## Overview

The `com.optage.kopt.batch` package contains the entry-point batch processing classes for the KOPT system. Each class represents a distinct batch run profile (primary, secondary, and tertiary) and provides a `run()` method that initiates the batch workflow. The package is a leaf module in the `com.optage.kopt` hierarchy with no sub-packages.

## Key Classes and Interfaces

### KKPRC14901 — Primary Batch Processor

**Source:** [KKPRC14901.java](src/main/java/com/optage/kopt/batch/KKPRC14901.java)

This is the primary batch runner in the package. It exposes two methods:

- **`check()`** — A placeholder check method (currently a no-op). It may serve as a pre-flight validation step before invoking `run()`, though the current implementation is empty.
- **`run()`** — The main entry point. It creates a new instance of `EKK0301A010` (from the `com.optage.kopt.ekk` package) and calls `process()` on it. This delegation pattern indicates that the actual batch logic lives in the EKK subsystem, and this class acts as the KOPT-side orchestrator.

```java
public void run() { new EKK0301A010().process(); }
```

### KKPRC24901 — Secondary Batch Processor

**Source:** [KKPRC24901.java](src/main/java/com/optage/kopt/batch/KKPRC24901.java)

The secondary batch class. Its `run()` method is currently a stub, suggesting this batch profile is either a placeholder for future batch jobs or is conditionally activated at runtime.

```java
public void run() { /* KKPRC secondary batch */ }
```

### KKPRC34901 — Tertiary Batch Processor

**Source:** [KKPRC34901.java](src/main/java/com/optage/kopt/batch/KKPRC34901.java)

The tertiary batch class, following the same stub pattern as KKPRC24901. The naming convention (149xx, 249xx, 349xx) suggests these three classes form a tiered or sequential batch pipeline.

```java
public void run() { /* KKPRC tertiary batch */ }
```

## How It Works

### Batch Execution Flow

The most concrete flow in this package is through KKPRC14901:

```mermaid
flowchart TD
    A["KKPRC14901.run()"] --> B["Instantiate EKK0301A010"]
    B --> C["EKK0301A010.process()"]
    D["KKPRC24901.run()"] -.not yet implemented.-> E["stub"]
    F["KKPRC34901.run()"] -.not yet implemented.-> E
```

1. An external scheduler or trigger invokes the desired `run()` method on one of the KKPRC classes.
2. In the primary path (KKPRC14901), `run()` delegates to `EKK0301A010.process()`, which contains the actual batch processing logic in the `com.optage.kopt.ekk` package.
3. The secondary and tertiary batch stubs (KKPRC24901, KKPRC34901) are not yet wired up.

## Dependencies and Integration

### Internal Dependencies

| Dependency | Package | Used By | Purpose |
|---|---|---|---|
| `EKK0301A010` | `com.optage.kopt.ekk` | KKPRC14901 | Delegates the actual batch processing work |

This is the only known dependency from the batch package. The `EKK0301A010` class lives in the EKK subsystem and encapsulates the batch execution logic.

### Cross-Module Relationships

No other cross-module dependencies were detected in the index. The batch package's responsibility appears to be narrow: providing entry points that delegate deeper into the `ekk` subsystem.

## Notes for Developers

- **Fixture classes**: The Javadoc on all three classes notes they are "auto-generated fixture classes for SPEC-SCOPED-WIKI tests." This suggests they may be scaffolding generated for testing infrastructure rather than production code.
- **Stub implementations**: Only KKPRC14901 has meaningful implementation. KKPRC24901 and KKPRC34901 are stubs with comment-only bodies.
- **Extension points**: To add a new batch workflow, follow the pattern of KKPRC14901 — define a class in this package with a `run()` method that instantiates and delegates to the appropriate handler in the `ekk` (or other) subsystem.
- **Check method convention**: KKPRC14901 defines a `check()` method alongside `run()`. If this convention extends to other batch classes, `check()` may be used for pre-flight validation before execution.