# Business Logic — JBSbatACTaiikiLmtTchiTrgtMake.terminal() [11 LOC]

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

## 1. Role

### JBSbatACTaiikiLmtTchiTrgtMake.terminal()

This method performs the **business service termination (clean-up) processing** for the batch job `JBSbatACTaiikiLmtTchiTrgtMake` (Domain Limit Notification Target Creator, 地域制限通知対象者作成部品). Its sole business purpose is to release resources acquired during the batch lifecycle, specifically the database access layer (`db_AC_M_TSRYO_CKTCSETE`) used to interact with the notification settings table. It follows the **delegated resource management pattern** — each batch service in this framework inherits `terminal()` from `JBSbatBusinessService` and overrides it to close its own dedicated DB access handles. Within the larger system, `terminal()` is called as the final step of the batch execution lifecycle (after `execute()`), ensuring no resource leaks even if the batch terminates abnormally. The method is a shared cleanup utility — every batch service in `eo.business.service` follows the same `initial()` → `execute()` → `terminal()` lifecycle.

## 2. Processing Pattern (Detailed Business Logic)

```mermaid
flowchart TD
    START(["terminal() entry"])
    CLOSE_DB["Close DB access: db_AC_M_TSRYO_CKTCSETE.close()"]
    DEBUG_START["Print debug log: [S][terminal]"]
    DEBUG_END["Print debug log: [E][terminal]"]
    END_NODE(["Return void"])

    START --> CLOSE_DB
    CLOSE_DB --> DEBUG_START
    DEBUG_START --> DEBUG_END
    DEBUG_END --> END_NODE
```

**Processing description:**

1. **Close DB Access** — Invokes `db_AC_M_TSRYO_CKTCSETE.close()` to release the database access layer resource that was initialized in `initial()` via `new JBSbatSQLAccess(commonItem, D_TBL_NAME_AC_M_TSRYO_CKTCSETE)`. This is the core business cleanup operation.
2. **Log Start Marker** — Emits a debug log entry `[S][terminal]` (S = Start) using `JACbatDebugLogUtil.printDebugLog()`. This marks the beginning of the terminal processing for audit/debugging purposes.
3. **Log End Marker** — Emits a debug log entry `[E][terminal]` (E = End) to mark the conclusion of the terminal processing.
4. **Return** — Returns void; batch framework proceeds to final teardown.

**Constant resolution:** No conditional branches exist in this method. The only constant referenced is `D_TBL_NAME_AC_M_TSRYO_CKTCSETE = "AC_M_TSRYO_CKTCSETE"` (通信量超過通知設定表 / Data Volume Excess Notification Settings table), which is bound to the DB access object during `initial()` and closed here.

## 3. Parameter Analysis

| No | Parameter Name | Type | Business Description |
|----|---------------|------|---------------------|
| - | (none) | - | This method takes no parameters. It operates entirely on instance fields set during `initial()` and inherited state from `JBSbatBusinessService`. |

**Instance fields read by this method:**

| # | Field Name | Type | Business Description |
|---|-----------|------|---------------------|
| 1 | `db_AC_M_TSRYO_CKTCSETE` | `JBSbatSQLAccess` | Database access layer handle for the `AC_M_TSRYO_CKTCSETE` (通信量超過通知設定 / Data Volume Excess Notification Settings) table. Created in `initial()` and closed here. |
| 2 | `super.logPrint` | (inherited) | Debug log printer instance inherited from `JBSbatBusinessService`, used for debug tracing via `JACbatDebugLogUtil.printDebugLog()`. |

## 4. CRUD Operations / Called Services

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

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| - | `JACbatDebugLogUtil.printDebugLog` | JACbatDebugLog | - | Calls `printDebugLog` to emit debug log entry `[S][terminal]` |
| - | `JACbatDebugLogUtil.printDebugLog` | JACbatDebugLog | - | Calls `printDebugLog` to emit debug log entry `[E][terminal]` |
| - | `JBSbatSQLAccess.close` | JBSbatSQLAccess | - | Calls `close` on the DB access layer for `AC_M_TSRYO_CKTCSETE` |

**Classification rationale:**

This method performs **no data manipulation** (no CRUD operations). It is purely a resource cleanup and debug logging method:

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| - | `db_AC_M_TSRYO_CKTCSETE.close()` | JBSbatSQLAccess | `AC_M_TSRYO_CKTCSETE` | Releases the database access connection handle. No SQL is executed — this is a connection/pool resource release. |
| - | `JACbatDebugLogUtil.printDebugLog` | JACbatDebugLog | - | Debug audit logging: marks terminal start (`[S][terminal]`) and end (`[E][terminal]`) |

## 5. Dependency Trace

| # | Caller (Screen/Batch) | Call Chain (Full Path to this Method) | Terminal (SC / CRUD / Entity) |
|---|----------------------|--------------------------------------|-------------------------------|
| 1 | Batch: JBSbatACTaiikiLmtTchiTrgtMake | `JBSbatBusinessService.execute()` (framework lifecycle) → `JBSbatACTaiikiLmtTchiTrgtMake.terminal` | `db_AC_M_TSRYO_CKTCSETE.close() [-] AC_M_TSRYO_CKTCSETE` |

**Notes:**
- `terminal()` is part of the batch framework lifecycle inherited from `JBSbatBusinessService`. The framework calls `terminal()` automatically after `execute()` completes (or on abnormal termination), ensuring resource cleanup.
- No explicit caller class (Screen/CBS) directly invokes `terminal()`. It is called by the batch execution framework as the final lifecycle step.

## 6. Per-Branch Detail Blocks

This method has no conditional branches (no if/else, switch, loop, or try-catch). The processing is linear.

**Block 1** — [LINEAR EXECUTION] (L155-L165)

> Complete terminal processing: close DB access resource and emit debug log markers.

| # | Type | Code |
|---|------|------|
| 1 | EXEC | `db_AC_M_TSRYO_CKTCSETE.close()` // Close DB access layer for AC_M_TSRYO_CKTCSETE table [通信量超過通知設定 / Data Volume Excess Notification Settings] |
| 2 | EXEC | `JACbatDebugLogUtil.printDebugLog(super.logPrint, "[S][terminal]")` // Debug log: terminal processing start marker |
| 3 | EXEC | `JACbatDebugLogUtil.printDebugLog(super.logPrint, "[E][terminal]")` // Debug log: terminal processing end marker |

## 7. Glossary

| Term | Type | Business Meaning |
|------|------|------------------|
| `AC_M_TSRYO_CKTCSETE` | Table | Data Volume Excess Notification Settings — master table storing configuration for customer notification settings when data usage exceeds limits |
| TSRYO | Field/Abbrev | 通信量 (tsūshin-ryō) — Communication Volume / Data Usage |
| CKTC | Field/Abbrev | 契約 (keiyaku) — Contract |
| SETE | Field/Abbrev | 設定 (settei) — Settings |
| 地域制限通知対象者作成 | Business term | Domain Limit Notification Target Creator — batch job that identifies customers in restricted regions who need notification about data usage limits |
| 業務サービス終了処理 | Japanese field | Business Service Termination Processing — the `terminal()` lifecycle method for cleanup |
| USECASE_ID | Field | `ACSV0035` — Use case ID for FTTH data volume excess achievement registration |
| SC_TITLE | Field | `ACSV003501SC` — SC title for FTTH data volume excess achievement registration |
| JBSbatBusinessService | Framework class | Abstract base class for batch business services; provides `initial()`, `execute()`, `terminal()` lifecycle |
| JBSbatSQLAccess | Framework class | Database access layer wrapper; manages SQL execution and connection lifecycle for a specific table |
| FTTH | Business term | Fiber To The Home — fiber-optic broadband internet service |