# Com / Optage / Kopt / Dto

## Overview

The `com.optage.kopt.dto` package contains data transfer objects (DTOs) used to carry structured data between layers of the Optage KOPT system. Currently, the package holds two lightweight fixture classes — `JKKSodRequestDTO` and `JKKSodResponseDTO` — which represent a request/response pair for a service identified by tenant and service ID.

> **Note:** These classes are auto-generated fixtures for SPEC-SCOPED-WIKI tests. Their structure is minimal by design and may be expanded as real business requirements are defined.

## Key Classes

### JKKSodRequestDTO

A simple request container holding two fields:

- `tenantId` — Identifies the tenant associated with this request.
- `serviceId` — Identifies the specific service being requested.

This class serves as a lightweight envelope for routing or identifying a service call. It has no behavior beyond its data fields.

```java
package com.optage.kopt.dto;

public class JKKSodRequestDTO {

  private String tenantId;
  private String serviceId;
}
```

**File:** [src/main/java/com/optage/kopt/dto/JKKSodRequestDTO.java](src/main/java/com/optage/kopt/dto/JKKSodRequestDTO.java)

### JKKSodResponseDTO

A simple response container holding two fields:

- `status` — The result status of the operation.
- `message` — A descriptive message accompanying the status.

This class serves as a lightweight envelope for returning outcome information back to the caller.

```java
package com.optage.kopt.dto;

public class JKKSodResponseDTO {

  private String status;
  private String message;
}
```

**File:** [src/main/java/com/optage/kopt/dto/JKKSodResponseDTO.java](src/main/java/com/optage/kopt/dto/JKKSodResponseDTO.java)

## How It Works

At present, these two DTOs form a basic request/response pattern:

1. A caller constructs a `JKKSodRequestDTO` with a `tenantId` and `serviceId`.
2. The request is processed (by code outside this package).
3. A `JKKSodResponseDTO` is returned containing the `status` and an explanatory `message`.

No methods, serialization logic, or validation are currently defined on either class.

## Data Model

Both classes are plain Java objects (POJOs) with private fields and no constructors, getters, or setters defined in the source. The field names follow standard Java naming conventions.

```mermaid
flowchart LR
  Request["JKKSodRequestDTO
 tenantId, serviceId"]
  Response["JKKSodResponseDTO
 status, message"]

  Request --> Response
```

## Dependencies and Integration

This package does not declare any external dependencies. It has no dependencies on frameworks or other packages based on the source code inspection. The DTOs are self-contained.

## Notes for Developers

- These are **fixture / scaffold** classes generated for SPEC-SCOPED-WIKI tests. Do not treat them as final business objects.
- If you extend either class, consider adding:
  - Standard getters/setters (or switch to a record if using Java 14+).
  - `toString()`, `equals()`, and `hashCode()` for debugging and testing.
  - Validation annotations (e.g., `@NotBlank`) if these fields are required.
  - A builder or constructor to enforce non-null creation.
- The broader `com.optage.kopt` package includes related service classes under `batch/`, `bp/`, `ekk/`, and `esc/` subpackages. These DTOs may be consumed by those services once business logic is added.