# Business Logic — JBSbatKKSmtvlRnkiInfCst.terminal() [17 LOC]

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

## 1. Role

### JBSbatKKSmtvlRnkiInfCst.terminal()

This method serves as the **business service termination handler** (業務サービス終了処理 — business service end processing) for the `JBSbatKKSmtvlRnkiInfCst` class, which is a smart-batch linkage information extraction product (スマートバリュー連携情報抽出品目) responsible for extracting service contract and related data. As a lifecycle method extending `JBSbatBusinessService`, `terminal()` fulfills a standard resource cleanup pattern across the batch service framework: it is invoked at the conclusion of a batch processing session to ensure all database access connections are properly released, preventing connection leaks and resource exhaustion. The method performs a sequential close operation on five `JBSbatCommonDBInterface` database access objects, each corresponding to a distinct entity table used during batch execution. It is a **shared utility pattern** — the method is instantiated and invoked by `JBSbatKKAdChgCstScreenKidou`, an address-change cost screen dispatch component, making it a standard teardown step in the address-change batch processing pipeline. The method takes no parameters and returns void, operating entirely on instance-level database handles maintained by the parent class.

## 2. Processing Pattern (Detailed Business Logic)

```mermaid
flowchart TD
    START(["terminal()"])
    CLOSE1["db_KK_T_SVKEI_KAISEN_UW.close()"]
    CLOSE2["db_KK_T_ADCHG_DTL.close()"]
    CLOSE3["db_KK_T_KJ_FIN_WK.close()"]
    CLOSE4["db_KU_T_SVKEI_KOJIAK.close()"]
    CLOSE5["db_KK_T_SVC_KEI.close()"]
    END_NODE(["Return / Next"])

    START --> CLOSE1
    CLOSE1 --> CLOSE2
    CLOSE2 --> CLOSE3
    CLOSE3 --> CLOSE4
    CLOSE4 --> CLOSE5
    CLOSE5 --> END_NODE
```

**Processing Description:**
The method executes a deterministic, sequential cleanup routine with **no conditional branches**. It closes each database access object in the order they were declared as instance fields. Each `close()` call releases the underlying database cursor, connection, or result-set resource held by the corresponding `JBSbatCommonDBInterface` implementation. If any `close()` call throws an exception, it propagates up through the method signature (`throws Exception`), potentially interrupting the remaining cleanup — a known trade-off in sequential resource teardown where some handles may remain open on failure.

## 3. Parameter Analysis

| No | Parameter Name | Type | Business Description |
|----|---------------|------|---------------------|
| - | (none) | - | This method takes no parameters. It operates on instance-level database access handles (`db_KK_T_SVKEI_KAISEN_UW`, `db_KK_T_ADCHG_DTL`, `db_KK_T_KJ_FIN_WK`, `db_KU_T_SVKEI_KOJIAK`, `db_KK_T_SVC_KEI`) that are inherited from the parent `JBSbatBusinessService` class and initialized during the preceding batch processing stages. |

**Instance Fields Accessed:**

| Field Name | Type | Business Description |
|-----------|------|---------------------|
| `db_KK_T_SVKEI_KAISEN_UW` | `JBSbatCommonDBInterface` | Database access handle for the Service Contract Line Detail table (`KK_T_SVKEI_KAISEN_UW`) |
| `db_KK_T_ADCHG_DTL` | `JBSbatCommonDBInterface` | Database access handle for the Address Change Detail table (`KK_T_ADCHG_DTL`) |
| `db_KK_T_KJ_FIN_WK` | `JBSbatCommonDBInterface` | Database access handle for the Work Completion Work table (`KK_T_KJ_FIN_WK`) |
| `db_KU_T_SVKEI_KOJIAK` | `JBSbatCommonDBInterface` | Database access handle for the Service Contract Project Order table (`KU_T_SVKEI_KOJIAK`) |
| `db_KK_T_SVC_KEI` | `JBSbatCommonDBInterface` | Database access handle for the Service Contract table (`KK_T_SVC_KEI`) |

## 4. CRUD Operations / Called Services

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

All called operations are resource cleanup (Release) operations, not data manipulation:

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| R (Release) | `db_KK_T_SVKEI_KAISEN_UW.close` | JBSbatDBClose | `KK_T_SVKEI_KAISEN_UW` | Closes the database access handle for the Service Contract Line Detail entity |
| R (Release) | `db_KK_T_ADCHG_DTL.close` | JBSbatDBClose | `KK_T_ADCHG_DTL` | Closes the database access handle for the Address Change Detail entity |
| R (Release) | `db_KK_T_KJ_FIN_WK.close` | JBSbatDBClose | `KK_T_KJ_FIN_WK` | Closes the database access handle for the Work Completion Work entity |
| R (Release) | `db_KU_T_SVKEI_KOJIAK.close` | JBSbatDBClose | `KU_T_SVKEI_KOJIAK` | Closes the database access handle for the Service Contract Project Order entity |
| R (Release) | `db_KK_T_SVC_KEI.close` | JBSbatDBClose | `KK_T_SVC_KEI` | Closes the database access handle for the Service Contract entity |

**Classification Note:** These are **Release (R)** operations — they do not perform CRUD data operations (Create/Read/Update/Delete) against the database. Instead, they release framework-level database access resources (cursors, prepared statements, result sets) that were allocated during earlier batch processing stages. The `close()` method on `JBSbatCommonDBInterface` cleans up the Java-side resource handles.

## 5. Dependency Trace

| # | Caller (Screen/Batch) | Call Chain (Full Path to this Method) | Terminal (SC / CRUD / Entity) |
|---|----------------------|--------------------------------------|-------------------------------|
| 1 | Batch: JBSbatKKAdChgCstScreenKidou | `JBSbatKKAdChgCstScreenKidou` creates `new JBSbatKKSmtvlRnkiInfCst()` → `terminal()` | `close [R] KK_T_SVKEI_KAISEN_UW`<br>`close [R] KK_T_ADCHG_DTL`<br>`close [R] KK_T_KJ_FIN_WK`<br>`close [R] KU_T_SVKEI_KOJIAK`<br>`close [R] KK_T_SVC_KEI` |

**Caller Detail:** `JBSbatKKAdChgCstScreenKidou` instantiates `JBSbatKKSmtvlRnkiInfCst` as `execObjSmtvl` and invokes its `terminal()` method as part of the address-change cost screen (住所変更料金額画面) batch dispatch flow. This is the sole known caller identified in the codebase.

## 6. Per-Branch Detail Blocks

> This method contains no conditional branches, loops, or exception handlers. It is a flat sequential execution of five `close()` calls. Each block below represents one sequential statement.

---

**Block 1** — [EXEC] `(DB Resource Release: KK_T_SVKEI_KAISEN_UW)` (L351)

> Closes the database access handle for the Service Contract Line Detail table.

| # | Type | Code |
|---|------|------|
| 1 | EXEC | `db_KK_T_SVKEI_KAISEN_UW.close()` // Closes DB access handle for KK_T_SVKEI_KAISEN_UW table |

---

**Block 2** — [EXEC] `(DB Resource Release: KK_T_ADCHG_DTL)` (L353)

> Closes the database access handle for the Address Change Detail table. Added in response to ST2-2013-0001008 (2013-03-01 OKITA).

| # | Type | Code |
|---|------|------|
| 1 | EXEC | `db_KK_T_ADCHG_DTL.close()` // Closes DB access handle for KK_T_ADCHG_DTL table [ST2-2013-0001008] |

---

**Block 3** — [EXEC] `(DB Resource Release: KK_T_KJ_FIN_WK)` (L355)

> Closes the database access handle for the Work Completion Work table.

| # | Type | Code |
|---|------|------|
| 1 | EXEC | `db_KK_T_KJ_FIN_WK.close()` // Closes DB access handle for KK_T_KJ_FIN_WK table |

---

**Block 4** — [EXEC] `(DB Resource Release: KU_T_SVKEI_KOJIAK)` (L356)

> Closes the database access handle for the Service Contract Project Order table.

| # | Type | Code |
|---|------|------|
| 1 | EXEC | `db_KU_T_SVKEI_KOJIAK.close()` // Closes DB access handle for KU_T_SVKEI_KOJIAK table |

---

**Block 5** — [EXEC] `(DB Resource Release: KK_T_SVC_KEI)` (L358)

> Closes the database access handle for the Service Contract table. Added in response to ANK-1429-00-00 (2013-03-21 T.TORIKAI).

| # | Type | Code |
|---|------|------|
| 1 | EXEC | `db_KK_T_SVC_KEI.close()` // Closes DB access handle for KK_T_SVC_KEI table [ANK-1429-00-00] |

---

## 7. Glossary

| Term | Type | Business Meaning |
|------|------|------------------|
| `terminal()` | Method | Business service termination handler — cleanup lifecycle method called at the end of batch processing to release resources |
| KK_T_SVKEI_KAISEN_UW | Table | Service Contract Line Detail (unconfirmed) — temporary table storing line-item details of service contracts awaiting processing |
| KK_T_ADCHG_DTL | Table | Address Change Detail — table storing detail records for address change requests and associated fees |
| KK_T_KJ_FIN_WK | Table | Work Completion Work (work table) — work table tracking completed construction/installation work items |
| KU_T_SVKEI_KOJIAK | Table | Service Contract Project Order — table storing project-order information for service contracts |
| KK_T_SVC_KEI | Table | Service Contract — table storing service contract header records |
| JBSbatBusinessService | Class | Base class for batch business services — provides the lifecycle framework (init/execute/terminal) |
| JBSbatCommonDBInterface | Interface | Common database access interface — abstraction for DB operations (query, insert, update, close) |
| JBSbatKKAdChgCstScreenKidou | Class | Address Change Cost Screen Dispatch — batch component that dispatches address-change cost processing and uses `JBSbatKKSmtvlRnkiInfCst` as a dependency |
| スマートバリュー連携 | Business term | Smart Value Linkage — integration product for extracting and synchronizing service contract information |
| 業務サービス終了処理 | Japanese term | Business service end processing — standard lifecycle callback for releasing resources after batch execution |
| DBアクセスクラス | Japanese term | DB access class — class responsible for database connectivity and operations |
| ツールから生成した終了処理 | Japanese term | Tool-generated termination processing — code auto-generated by the batch code generator tool for standard resource cleanup |
| KK_SELECT_026 | Constant | SQL definition key for SELECT queries against KK_T_ADCHG_DTL |
| KK_SELECT_020 | Constant | SQL definition key for SELECT queries (used by both KK_T_KJ_FIN_WK and KK_T_ADCHG_DTL) |
| KK_SELECT_007 | Constant | SQL definition key for SELECT queries against KU_T_SVKEI_KOJIAK |
| KK_SELECT_003 | Constant | SQL definition key for SELECT queries against KK_T_ADCHG_DTL |
| KK_SELECT_023 | Constant | SQL definition key for SELECT queries against KK_T_SVKEI_KAISEN_UW |