---
# Business Logic — JBSBatKKKkOpDlRvChsht.terminal() [8 LOC]

| Field | Value |
|-------|-------|
| Fully Qualified Name | `eo.business.service.JBSBatKKKkOpDlRvChsht` |
| Layer | Service (Batch) |
| Module | `service` (Package: `eo.business.service`) |

## 1. Role

### JBSBatKKKkOpDlRvChsht.terminal()

This method performs **business service termination processing** (`業務サービス終了処理`), which is the cleanup phase at the end of a batch job lifecycle. The `JBSBatKKKkOpDlRvChsht` class itself is the **Machine OPS Service Cancellation Reservation Extraction Component** (`機器O/Sサービス解約予約抽出部品`) — a batch service responsible for extracting records related to cancellation reservations for machine (device) operations in the customer base system (`eo顧客基盤システム`). The `terminal()` method is the standard lifecycle hook called after the main processing (`execute()`) completes, and its sole responsibility is to **close the database access object** (`db_KK_T_SVKEI_EXC_CTRL`) that was initialized during the `initial()` phase. This ensures the SQL access connection to the `KK_T_SVKEI_EXC_CTRL` (Service Contract Exclusion Control) table is properly released, preventing resource leaks. As part of the `JBSbatBusinessService` base class contract, `terminal()` is a shared cleanup pattern — every batch service extending this base class implements `terminal()` to release its own DB connections and resources. The method operates as a **delegation pattern**, forwarding the close request to the `JBSbatSQLAccess` instance.

## 2. Processing Pattern (Detailed Business Logic)

```mermaid
flowchart TD
    START(["terminal()"])
    STEP1["close db_KK_T_SVKEI_EXC_CTRL"]
    END_NODE(["Return / Next"])

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

| # | Type | Code | Business Description |
|---|------|------|---------------------|
| 1 | EXEC | `db_KK_T_SVKEI_EXC_CTRL.close()` | Closes the database access object for the Service Contract Exclusion Control table (`サービス契約排制制御テーブル`), releasing the associated SQL connection |

## 3. Parameter Analysis

| No | Parameter Name | Type | Business Description |
|----|---------------|------|---------------------|
| - | (none) | - | - |

**Instance fields read by this method:**

| Field | Type | Business Description |
|-------|------|---------------------|
| `db_KK_T_SVKEI_EXC_CTRL` | `JBSbatSQLAccess` | Database access object for the Service Contract Exclusion Control table (`サービス契約排制制テーブル`), initialized during `initial()` and closed here |

## 4. CRUD Operations / Called Services

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

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| - | `JACbatDataBnktUtil.close` | JACbatDataBnkt | - | Calls `close` in `JACbatDataBnktUtil` |
| - | `JACbatParamUtil.close` | JACbatParam | - | Calls `close` in `JACbatParamUtil` |
| - | `JACbatSchdlUtil.close` | JACbatSchdl | - | Calls `close` in `JACbatSchdlUtil` |
| - | `JBSbatCHChangeGroupKei.close` | JBSbatCHChangeGroupKei | - | Calls `close` in `JBSbatCHChangeGroupKei` |
| - | `JBSbatKKPrcIfCommon.close` | JBSbatKKPrcIfCommon | - | Calls `close` in `JBSbatKKPrcIfCommon` |

### Method-specific analysis:

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| - | `db_KK_T_SVKEI_EXC_CTRL.close()` | JBSbatSQLAccess | KK_T_SVKEI_EXC_CTRL | Closes the database access object for the Service Contract Exclusion Control table, releasing the JDBC connection and any pending resources |

**How to classify:**
- This method does not perform any C/R/U/D database operations. It only closes a pre-existing database connection.
- The `close()` method on `JBSbatSQLAccess` is a **resource management** call, not a CRUD operation.

## 5. Dependency Trace

| # | Caller (Screen/Batch) | Call Chain (Full Path to this Method) | Terminal (SC / CRUD / Entity) |
|---|----------------------|--------------------------------------|-------------------------------|
| 1 | Batch:JBSBatKKKkOpDlRvChsht | `JBSbatBusinessService.executeBatch()` -> `JBSBatKKKkOpDlRvChsht.terminal` | `db_KK_T_SVKEI_EXC_CTRL.close() [RESOURCE] KK_T_SVKEI_EXC_CTRL` |

**Notes:**
- This method is part of the batch lifecycle of `JBSBatKKKkOpDlRvChsht` itself. It is not called by external screens or CBS classes.
- As a standard `JBSbatBusinessService` lifecycle hook, `terminal()` is invoked by the base class framework after `execute()` completes.
- No screen or CBS caller was found in the codebase that directly references this method.

## 6. Per-Branch Detail Blocks

**Block 1** — [EXEC] `(Close database connection)` (L{342})

> Releases the database access object for the Service Contract Exclusion Control table. This is the only operation in this method — a straightforward cleanup step with no conditional branches.

| # | Type | Code | Business Description |
|---|------|------|---------------------|
| 1 | EXEC | `db_KK_T_SVKEI_EXC_CTRL.close()` | Closes the `JBSbatSQLAccess` instance for `KK_T_SVKEI_EXC_CTRL` table, releasing the underlying JDBC connection and associated resources |

## 7. Glossary

| Term | Type | Business Meaning |
|------|------|------------------|
| `terminal()` | Method | Business service termination processing (`業務サービス終了処理`) — cleanup phase of the batch lifecycle |
| `db_KK_T_SVKEI_EXC_CTRL` | Field | Database access object for the Service Contract Exclusion Control table |
| `KK_T_SVKEI_EXC_CTRL` | Table | Service Contract Exclusion Control table (`サービス契約排制制御テーブル`) — stores control records for service contract exclusions |
| `SVC_KEI_NO` | Field | Service detail number (`サービス契約番号`) — internal identifier for a service contract line item |
| `FLG_ON` | Constant | Flag-on value = `"1"` — indicates a flag is enabled |
| `BLANK` | Constant | Empty string = `""` — represents blank/empty value |
| JBSbatBusinessService | Class | Base class for batch business services; defines the lifecycle: `initial()` -> `execute()` -> `terminal()` |
| JBSbatSQLAccess | Class | Database access wrapper providing SQL execution and connection management |
| KoptBatch | Module | Key operations batch processing module — handles reservation and cancellation extraction batch jobs |
| eo顧客基盤システム | Module name | eo Customer Base System — the core customer service management platform |
| 機器O/S | Business term | Machine Operation and Shutdown (`機器O/S`) — device-level operation and suspension management |
| サービス契約 | Business term | Service contract (`サービス契約`) — the agreement defining services provisioned to a customer |
| 排制制御 | Business term | Exclusion control (`排制制御`) — rules or flags that prevent certain services from being combined or applied |
| 解約予約 | Business term | Cancellation reservation (`解約予約`) — a pending cancellation request for a service contract |