---
title: Business Logic — KKIFE423.execute()
created: 2026-07-28
---

# Business Logic — KKIFE423.execute() [12 LOC]

| Field | Value |
|-------|-------|
| Fully Qualified Name | `local.gyomu.api.KKIFE423` |
| Layer | Controller (REST API Endpoint) |
| Module | `api` (Package: `local.gyomu.api`) |

## 1. Role

### KKIFE423.execute()

KKIFE423 is a REST API endpoint that implements the "Discount Information Inquiry for Billing Calculation (Operator Support)" service (料金計算用割引情報照会(オペレータ支援)). This method serves as the HTTP POST entry point for the KKSV0937 operator support screen, which enables customer service operators to retrieve discount information associated with billing calculations for K-Opticom's telecommunications services. The method follows a pure delegation pattern — it receives the incoming `HttpServletRequest` and `ServletContext`, then immediately delegates all processing to the parent class `ApiServerLocalBase.exec()` method via the APIID constant `"KKIFE423"`. As a shared utility API class, it is called exclusively by the KKSV0937 workflow screen and does not contain any conditional branching or direct business logic of its own.

## 2. Processing Pattern (Detailed Business Logic)

```mermaid
flowchart TD
    START(["KKIFE423.execute()"])
    STEP1["API共通部呼出<br/>super.exec(APIID, pRequest, pContext)"]
    END_NODE(["Return Response"])

    START --> STEP1
    STEP1 --> END_NODE
```

**Flow Description:**
1. The `execute()` method receives an HTTP POST request from the client (KKSV0937 screen).
2. It invokes the parent class's `exec` method, passing three arguments: the constant `APIID = "KKIFE423"`, the request object, and the servlet context. This delegates all processing — parameter parsing, authentication, authorization, transaction management, and business logic dispatch — to the shared API framework.
3. The parent `exec` method resolves the APIID, locates the corresponding service component (linked to `SERVICE_ID = "KKSV0937"`), executes the business logic, and returns a `Response` object.
4. The response is returned directly to the caller.

## 3. Parameter Analysis

| No | Parameter Name | Type | Business Description |
|----|---------------|------|---------------------|
| 1 | `pRequest` | `@Context final HttpServletRequest` | The HTTP request carrying the operator's inquiry parameters (e.g., customer ID, contract information, or billing period) for the discount information lookup. This request originates from the KKSV0937 operator support screen and contains the query criteria for retrieving discount data tied to billing calculations. |
| 2 | `pContext` | `@Context final ServletContext` | The servlet context providing access to application-wide resources (session factory, data source references, configuration) needed by the API framework during request processing. |

**External State / Instance Fields Read:**
| Field | Type | Business Description |
|-------|------|---------------------|
| `APIID` | `private static final String = "KKIFE423"` | The API identifier used by the framework to route the request to the correct service component. |

## 4. CRUD Operations / Called Services

### Pre-computed evidence from code analysis graph:

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| - | `ApiServerLocalBase.exec` | API Framework | - | Delegates to the shared API framework which handles authentication, authorization, transaction start, and dispatches to the business service component registered for APIID `"KKIFE423"`. |

**Notes:** The actual business logic (SC Code, DB operations) is not in this method — it is executed by the framework-registered service component linked to `SERVICE_ID = "KKSV0937"`. This method is a thin API facade with no direct CRUD operations.

## 5. Dependency Trace

| # | Caller (Screen/Batch) | Call Chain (Full Path to this Method) | Terminal (SC / CRUD / Entity) |
|---|----------------------|--------------------------------------|-------------------------------|
| 1 | Screen:KKSV0937 | `KKSV0937Flow` / `KKSV0937OPOperation` -> REST call -> `KKIFE423.execute` | Framework-dispatched via APIID "KKIFE423" -> SC linked to KKSV0937 service |

**Call Chain Detail:**
- **KKSV0937Flow** — The EJB Stateless Session Bean that implements the KKSV0937 screen workflow. It exposes the `KKSV0937OP` operation which triggers API calls.
- **KKSV0937OPOperation** — The operation handler class within the KKSV0937 workflow that performs the actual API invocation to the REST endpoint.
- **KKSV0937_KKSV0937OPBPCheck** — The BPM check class (abstract base point check) that validates data before and after the operation.

This method is exclusively called by the KKSV0937 operator support workflow. No other screens or batch processes reference this API endpoint.

## 6. Per-Branch Detail Blocks

**Block 1** — [METHOD BODY] `(entry point)` (L65)

> The method body contains no conditional branches, loops, or nested blocks. It performs a single delegation call.

| # | Type | Code |
|---|------|------|
| 1 | CALL | `super.exec(APIID, pRequest, pContext)` // Delegates to parent API framework for authentication, dispatch, and business logic execution [-> APIID="KKIFE423"] |
| 2 | RETURN | `return response` // Returns the Response object from the parent exec method to the caller |

**Block 2** — [Exception Clause] `(throws Exception)` (L65)

> The method declares `throws Exception` and relies on the parent class's error handling. The parent `ApiServerLocalBase.exec` catches business exceptions (`ApiServerExceptionGyomuErr`) and general `Exception`, performing appropriate error responses before re-throwing business exceptions.

| # | Type | Code |
|---|------|------|
| 1 | THROW | `throws Exception` // Declares exception for the caller to handle; parent class manages error response generation |

## 7. Glossary

| Term | Type | Business Meaning |
|------|------|------------------|
| KKIFE423 | API ID | Discount Information Inquiry for Billing Calculation (Operator Support) — the REST API endpoint identifier. "IFE" = Interface (外部I/F), "423" = sequence number. |
| KKSV0937 | Screen ID | Operator support screen for discount information inquiry — the workflow that invokes this API. |
| APIID | Field | API Identifier — a static constant used by the framework to route requests to the correct service component. |
| SERVICE_ID | Field | The service/screen ID linked to this API — identifies KKSV0937 as the owning screen. |
| SYSTEM_ID | Field | The source system identifier — "OPS1" indicates the Operations Support system. |
| JOB_ID | Field | The job/workflow execution identifier — "KKIFE423". |
| 料金計算用割引情報照会 | Japanese term | Discount Information Inquiry for Billing Calculation — the business function for looking up discount data associated with service billing. |
| オペレータ支援 | Japanese term | Operator Support — indicates this is a support tool for customer service operators, not an automated workflow. |
| ApiServerLocalBase | Class | Abstract base class for local API server implementations — provides common API processing including authentication, transaction management, and service component dispatch. |
| REST API | Technical term | Representational State Transfer API — this method is exposed as a POST endpoint via JAX-RS (`@POST`, `@Path`). |
| K-Opticom | Business term | The telecommunications service provider; the system context for all entities in this codebase. |