# Business Logic — JBSbatTUBmpHaishiSodHakTrn.executeKK_T_SVC_KEI_UCWK_TU_SELECT_005() [10 LOC]

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

## 1. Role

### JBSbatTUBmpHaishiSodHakTrn.executeKK_T_SVC_KEI_UCWK_TU_SELECT_005()

This method performs a targeted database lookup on the **Service Contract Details Table** (`KK_T_SVC_KEI_UCWK`) to retrieve the current state of a service contract associated with a specific NTT-contracted telephone line number and operation date. It acts as a **private data-access delegate** within the batch service responsible for cancellation/mass-processing of NTTC (Nippon Telecommunications) contracts (`TUBmpHaishi` — batch cancellation processing). The method receives two bind variables — a phone number and an operation date — packages them into a structured parameter list, and executes a predefined SQL query keyed by `"TU_SELECT_005"`. It does not perform any branching or conditional logic; its sole purpose is to encapsulate the database select operation, returning results into the `db_KK_T_SVC_KEI_UCWK` instance field for the caller (`execute()`) to consume and evaluate (e.g., checking if the service contract status equals `"910"` — meaning "already terminated"). This method follows the **delegation pattern**, where the batch service delegates raw SQL execution to the `JBSbatSQLAccess` framework.

## 2. Processing Pattern (Detailed Business Logic)

```mermaid
flowchart TD
    START(["executeKK_T_SVC_KEI_UCWK_TU_SELECT_005(params)"])
    CREATE["Create JBSbatCommonDBInterface paramList"]
    BIND_PHONE["Bind param[0] -> Phone Number"]
    BIND_DATE["Bind param[1] -> Operation Date"]
    SELECT["db_KK_T_SVC_KEI_UCWK.selectBySqlDefine(paramList, KK_T_SVC_KEI_UCWK_TU_SELECT_005)"]
    END_NODE(["Return / Next"])

    START --> CREATE
    CREATE --> BIND_PHONE
    BIND_PHONE --> BIND_DATE
    BIND_DATE --> SELECT
    SELECT --> END_NODE
```

**Processing Steps:**

1. **Parameter List Creation**: Instantiates a `JBSbatCommonDBInterface` object (`paramList`) to hold bind variables for the SQL query.
2. **Phone Number Binding**: Retrieves `param[0]`, converts it to a string via `toString()`, and sets it as the first bind variable in `paramList`. This corresponds to the NTT-contracted telephone line number (`ntt_kei_tel_kaisen_no`).
3. **Operation Date Binding**: Retrieves `param[1]`, converts it to a string via `toString()`, and sets it as the second bind variable in `paramList`. This corresponds to the operation date (`ope_date`).
4. **Database Select**: Calls `db_KK_T_SVC_KEI_UCWK.selectBySqlDefine(paramList, KK_T_SVC_KEI_UCWK_TU_SELECT_005)` to execute the predefined SQL query (`"TU_SELECT_005"`) against the `KK_T_SVC_KEI_UCWK` table, passing the bind variables. The result is stored in the instance field `db_KK_T_SVC_KEI_UCWK` for subsequent retrieval via `selectNext()` by the caller.

## 3. Parameter Analysis

| No | Parameter Name | Type | Business Description |
|----|---------------|------|---------------------|
| 1 | `param` | `Object[]` | Array of bind variables for the database select query. Contains exactly two elements: `param[0]` is the NTT-contracted telephone line number (`ntt_kei_tel_kaisen_no`, a String representing the phone number used to identify the customer's telecom service), and `param[1]` is the operation date (`ope_date`, a String representing the business date for the batch processing run). The method converts both elements to strings via `toString()` before binding them. |

**Instance fields / external state read by this method:**

| Field | Type | Business Description |
|-------|------|---------------------|
| `db_KK_T_SVC_KEI_UCWK` | `JBSbatSQLAccess` | Database access class for the Service Contract Details table (`KK_T_SVC_KEI_UCWK`). Initialized in the service constructor with the table name constant. |

## 4. CRUD Operations / Called Services

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

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| R | `JBSbatCommonDBInterface.setValue(String)` | JDKStructuredMap | - | Sets bind variable values into the parameter list for the SQL query. Called twice: once for phone number, once for operation date. |
| R | `db_KK_T_SVC_KEI_UCWK.selectBySqlDefine(JBSbatCommonDBInterface, String)` | KK_T_SVC_KEI_UCWK SC | `KK_T_SVC_KEI_UCWK` | Executes a predefined SQL SELECT query (keyed by `"TU_SELECT_005"`) against the Service Contract Details table to retrieve contract information matching the phone number and operation date bind variables. |

**Classification rationale:**
- `setValue` is classified as **R** (Read-adjacent) since it populates query parameters rather than modifying persistent data.
- `selectBySqlDefine` is classified as **R** (Read) as it performs a database SELECT operation with no side effects on the data.

## 5. Dependency Trace

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

No screen/batch entry points found within 8 hops. Direct callers found: 1 methods.
Terminal operations from this method: `setValue` [-], `setValue` [-], `setValue` [-], `selectBySqlDefine` [-]

| # | Caller (Screen/Batch) | Call Chain (Full Path to this Method) | Terminal (SC / CRUD / Entity) |
|---|----------------------|--------------------------------------|-------------------------------|
| 1 | Batch: `JBSbatTUBmpHaishiSodHakTrn.execute(JBSbatServiceInterfaceMap)` | `JBSbatTUBmpHaishiSodHakTrn.execute(inMap)` → `executeKK_T_SVC_KEI_UCWK_TU_SELECT_005(whereParamSvcKeiUcwk)` | `selectBySqlDefine [R] KK_T_SVC_KEI_UCWK` |

**Caller context:**
The `execute()` method (public entry point of this batch service) prepares two-element bind variable arrays where index 0 holds the NTT-contracted phone number and index 1 holds the operation date from `commonItem.getOpeDate()`. After calling `executeKK_T_SVC_KEI_UCWK_TU_SELECT_005()`, the caller immediately invokes `db_KK_T_SVC_KEI_UCWK.selectNext()` to retrieve the result set, then checks if the retrieved `SVC_KEI_UCWK_STAT` field equals `"910"` (JKKStrConst.SVC_KEI_UCWK_STAT_DSLZUMI — "termination completed").

## 6. Per-Branch Detail Blocks

> This method has no conditional branches (no if/else, switch, loops). It follows a linear execution path.

**Block 1** — [TOP-LEVEL] `(none)` (L345)

> Creates the parameter list for the database query and binds the input parameters.

| # | Type | Code |
|---|------|------|
| 1 | SET | `paramList = new JBSbatCommonDBInterface();` // Creates a structured parameter container for SQL bind variables [-> CONSTANT: JBSbatCommonDBInterface] |
| 2 | EXEC | `paramList.setValue(param[0].toString());` // Binds phone number (ntt_kei_tel_kaisen_no) as the first bind variable |
| 3 | EXEC | `paramList.setValue(param[1].toString());` // Binds operation date (ope_date) as the second bind variable |

**Block 2** — [TOP-LEVEL] `(none)` (L351)

> Executes the predefined SQL SELECT query against the Service Contract Details table.

| # | Type | Code |
|---|------|------|
| 1 | CALL | `db_KK_T_SVC_KEI_UCWK.selectBySqlDefine(paramList, KK_T_SVC_KEI_UCWK_TU_SELECT_005);` // Executes SQL define "TU_SELECT_005" against KK_T_SVC_KEI_UCWK table [-> CONSTANT: KK_T_SVC_KEI_UCWK_TU_SELECT_005="TU_SELECT_005"] |

## 7. Glossary

| Term | Type | Business Meaning |
|------|------|------------------|
| `KK_T_SVC_KEI_UCWK` | DB Table | Service Contract Details Table — stores records of telecom service contracts including contract status, phone numbers, and related service attributes. The `KK_T_` prefix indicates a core transactional table; `SVC_KEI` = Service Detail (サービス契約内容); `UCWK` = Update Work (更新処理). |
| `ntt_kei_tel_kaisen_no` | Field | NTT-contracted telephone line number — the unique phone number assigned to a customer under an NTT (Nippon Telegraph and Telephone) service contract. Used as the primary lookup key for service contract records. |
| `ope_date` | Field | Operation Date — the business date used for batch processing runs. Represents the processing date of the batch job (e.g., "20260628" format). |
| `SVC_KEI_UCWK_STAT` | Field | Service Contract Update Status — a status code field on the service contract details table. Value `"910"` means "Termination Completed" (解約済み), indicating the service contract has already been cancelled. |
| `TU_SELECT_005` | SQL Key | Predefined SQL query key for selecting service contract details by phone number and operation date. Part of the batch service's SQL definition registry. |
| `JBSbatSQLAccess` | Class | Database access framework class — handles SQL execution, connection management, and result set retrieval for batch services. |
| `JBSbatCommonDBInterface` | Class | Common database interface — a structured map-like container for SQL bind variables (input parameters for queries, output results from queries). |
| `JBSbatBusinessService` | Class | Base batch service class — provides common batch processing infrastructure including logging, error handling, and database access initialization. |
| `TUBmpHaishi` | Domain term | Batch Cancellation Processing — a batch service category for mass processing of service cancellations or terminations. The class name encodes "TU" (Update) + "BmpHaishi" (Batch Cancellation). |
| `KK_T_` prefix | Naming convention | Core transaction table prefix — indicates a persistent business transaction table in the system's data model (as opposed to `ZM_M_` which indicates master/reference tables). |
| `ZM_M_TELNO` | DB Table | Telephone Number Master Table — a reference/maintenance table for telephone number data (not directly accessed by this method, but available as an instance field in the service). |
| `KK_T_SVKEIUW_EOH_TEL` | DB Table | Service Contract Work — NTT Phone Table — a specialized table linking service contract work data with NTT phone line details (not directly accessed by this method, but available as an instance field). |
| `JKKStrConst.SVC_KEI_UCWK_STAT_DSLZUMI` | Constant | Status code constant with value `"910"` — represents "Termination Completed" (解約済み) status for service contract records. |