---
# Business Logic — JBSbatKKAdChgFmtcelSodUpd.executeKK_T_ADCHG_DTL_KK_SELECT_043() [9 LOC]

| Field | Value |
|-------|-------|
| Fully Qualified Name | `eo.business.service.JBSbatKKAdChgFmtcelSodUpd` |
| Layer | Batch Service (Service Component layer for batch processing) |
| Module | `service` (Package: `eo.business.service`) |

## 1. Role

### JBSbatKKAdChgFmtcelSodUpd.executeKK_T_ADCHG_DTL_KK_SELECT_043()

This method performs a database read (SELECT) operation against the **T_ADCHG_DTL** table — the "Addition/Change Detail" table — using a pre-defined SQL key (`KK_SELECT_043`). Its business purpose is to retrieve addition/change detail records associated with a specific service detail number (op_svc_kei_no) within the context of formatting and updating Service Order Data (SOD) for contract changes. It serves as a **delegated data-fetching helper** called from the parent method `execute()`, where it is invoked inside a loop iterating over operator service detail records (T_OP_SVC_KEI). For each operator service line item, this method checks whether a corresponding addition/change detail record exists; if no matching record is found (null result), the caller skips further processing for that line item via a `continue` statement. This method is **private** and follows the standard batch service pattern of building a bind-variable parameter list, then delegating to a `db_*` DAO accessor (`db_KK_T_ADCHG_DTL.selectBySqlDefine()`).

## 2. Processing Pattern (Detailed Business Logic)

```mermaid
flowchart TD
    START(["executeKK_T_ADCHG_DTL_KK_SELECT_043(param)"])
    STEP1["Generate bind variable list
JBSbatCommonDBInterface paramList
= new JBSbatCommonDBInterface()"]
    STEP2["Set bind variable value
paramList.setValue(param[0].toString())"]
    STEP3["Execute DB select
selectBySqlDefine(paramList,
KK_SELECT_043)"]
    END_NODE(["Return / Next"])

    START --> STEP1
    STEP1 --> STEP2
    STEP2 --> STEP3
    STEP3 --> END_NODE
```

**Constant Resolution:**

| Constant | Value | Business Meaning |
|----------|-------|------------------|
| `KK_T_ADCHG_DTL_KK_SELECT_043` | `"KK_SELECT_043"` | SQL definition key for the SELECT statement against T_ADCHG_DTL (Addition/Change Detail table) |

**Processing Summary (Javadoc translation):**
1. Set bind variables in the parameter array.
2. Execute DB access.
3. Method invocation signature: The `param` array holds bind variable values in order: Parent Contract Identification Code, Service Contract Number, Option Service Code, Reservation Application Date (year-month-day).

## 3. Parameter Analysis

| No | Parameter Name | Type | Business Description |
|----|---------------|------|---------------------|
| 1 | `param` | `Object[]` | An array of bind variable values for the SQL SELECT query. `param[0]` is the option service detail number (`op_svc_kei_no`) extracted from the parent T_OP_SVC_KEI record being iterated. The Javadoc documents that the full expected array may include: parent contract identification code, service contract number, option service code, and reservation application date (year-month-day). In practice, the caller passes a single-element array containing only the service detail number. |

**External State Read:**

| Field | Type | Business Description |
|-------|------|---------------------|
| `db_KK_T_ADCHG_DTL` | DAO accessor | Database accessor for the T_ADCHG_DTL (Addition/Change Detail) table, used to execute the SELECT via `selectBySqlDefine()` |

## 4. CRUD Operations / Called Services

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

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| R | `JBSbatCommonDBInterface.setValue` | - | - | Sets a bind variable value into the parameter list object (local object manipulation, not a DB operation) |
| R | `db_KK_T_ADCHG_DTL.selectBySqlDefine` | - | KK_T_ADCHG_DTL | Executes the SQL SELECT query defined by key `KK_SELECT_043` against the T_ADCHG_DTL table, using the bind variable values from `paramList`. Returns a `JBSbatCommonDBInterface` result set that the caller iterates via `selectNext()`. |

**Classification rationale:**
- **R (Read)**: The method performs a SELECT operation only — no INSERT, UPDATE, or DELETE occurs. The `selectBySqlDefine()` method is a read-only database accessor.
- The `setValue()` call on `JBSbatCommonDBInterface` is a local parameter binding operation, not a CRUD operation on any entity/table.

## 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` [-], `selectBySqlDefine` [-]

| # | Caller (Screen/Batch) | Call Chain (Full Path to this Method) | Terminal (SC / CRUD / Entity) |
|---|----------------------|--------------------------------------|-------------------------------|
| 1 | Batch: JBSbatKKAdChgFmtcelSodUpd.execute() | `JBSbatKKAdChgFmtcelSodUpd.execute()` (inside T_OP_SVC_KEI iteration loop) -> `executeKK_T_ADCHG_DTL_KK_SELECT_043()` | `selectBySqlDefine [R] KK_T_ADCHG_DTL` |

**Call Chain Details:**
The method is called from `JBSbatKKAdChgFmtcelSodUpd.execute()` within a `for` loop iterating over operator service detail records (`T_OP_SVC_KEI`). For each operator service line item, the caller:
1. Calls `executeKK_T_OP_SVC_KEI_KK_SELECT_077()` to query operator service details.
2. Iterates the results, and for each record calls `executeKK_T_ADCHG_DTL_KK_SELECT_043()` with the `op_svc_kei_no` value.
3. Immediately follows with `db_KK_T_ADCHG_DTL.selectNext()` to retrieve the result.
4. If the result is null, continues to the next iteration (skipping this line item).

## 6. Per-Branch Detail Blocks

> This method contains no conditional branches (if/else, switch, loops). It is a linear sequence of exactly 3 processing steps (9 LOC).

**Block 1** — [LINEAR PROCESSING] (L549)

> Generate the bind variable list object and populate it with the value from the parameter array.

| # | Type | Code |
|---|------|------|
| 1 | SET | `JBSbatCommonDBInterface paramList = new JBSbatCommonDBInterface()` | Create a new bind-variable parameter list container for the SQL query. |
| 2 | EXEC | `paramList.setValue(param[0].toString())` | Set the first element of the `param` array (option service detail number from T_OP_SVC_KEI) as a bind variable value. Converts the Object to String via `toString()`. [-> `param[0]` = op_svc_kei_no] |

**Block 2** — [LINEAR PROCESSING] (L553)

> Execute the database SELECT query against T_ADCHG_DTL.

| # | Type | Code |
|---|------|------|
| 1 | CALL | `db_KK_T_ADCHG_DTL.selectBySqlDefine(paramList, KK_T_ADCHG_DTL_KK_SELECT_043)` | Execute the pre-defined SQL SELECT query (key: `KK_SELECT_043`) against the T_ADCHG_DTL table using the bind variables in `paramList`. The result is placed into the DAO's internal result set, to be retrieved by the caller via `selectNext()`. |

## 7. Glossary

| Term | Type | Business Meaning |
|------|------|------------------|
| `op_svc_kei_no` | Field | Option service detail number — the unique identifier for a specific option service line item within a service contract |
| `KK_T_ADCHG_DTL` | Entity/DB | T_ADCHG_DTL table (Addition/Change Detail) — stores records of service additions and changes made to existing contracts |
| `KK_T_OP_SVC_KEI` | Entity/DB | T_OP_SVC_KEI table (Operator Service Detail) — stores operator service line items for service contracts |
| `KK_SELECT_043` | SQL Key | Named SQL definition key for the SELECT query against T_ADCHG_DTL |
| `JBSbatCommonDBInterface` | Type | Common batch database interface — a bind-variable container and result set holder used in batch batch processing |
| SOD | Acronym | Service Order Data — data representing a service order in the telecom order fulfillment domain |
| T_ADCHG_DTL | Acronym | Table: Addition/Change Detail — stores details of service modifications (additions and changes) to existing contracts |
| T_OP_SVC_KEI | Acronym | Table: Operator Service Detail — stores line items of operator-managed services within a contract |
| Bind Variable | Technical | A placeholder value in a prepared SQL statement, populated at runtime via `setValue()` to prevent SQL injection and enable query plan caching |
| 親契約識別コード | Field (Japanese) | Parent contract identification code — the identifier for the parent/master contract in a hierarchical contract structure |
| サービス契約番号 | Field (Japanese) | Service contract number — the unique identifier for a service contract |
| オプションサービスコード | Field (Japanese) | Option service code — the code identifying a specific option service type |
| 予約適用年月日 | Field (Japanese) | Reservation application date — the date (year-month-day) on which a service change/reservation takes effect |
| バイント変数 | Field (Japanese) | Bind variable — SQL placeholder value passed to a prepared statement |
| DBアクセス | Field (Japanese) | DB access — database access operation (SELECT/INSERT/UPDATE/DELETE) |
| 追加変更 | Field (Japanese) | Addition/Change — a service modification action that adds or changes a service within an existing contract |