# Business Logic — JEKKA0070001TPMA.isExpectedValue() [11 LOC]

| Field | Value |
|-------|-------|
| Fully Qualified Name | `eo.ejb.cbs.mainproc.JEKKA0070001TPMA` |
| Layer | Service (EJB Component-Based Service) |
| Module | `mainproc` (Package: `eo.ejb.cbs.mainproc`) |

## 1. Role

### JEKKA0070001TPMA.isExpectedValue()

This method serves as an **error code validator** within the CBS (Component-Based Service) main processing pipeline for the JEKKA0070001 transaction. Its business purpose is to determine whether a given error code falls within the set of **expected, documented error codes** for this service operation. When an error code is recognized as valid (belonging to the approved whitelist), the method returns the caller-supplied `noExpValFlag` unchanged — typically `0`, indicating "error is expected/normal." When an error code is **not** in the whitelist, the method sets `noExpValFlag` to `1`, signaling that the error code is **unanticipated** or unexpected. This enables the calling process (`call_KKIFE401()`) to classify errors as either expected system errors (which may be safely logged or ignored) or unexpected errors (which may warrant escalation, alerts, or special handling). The method implements a **whitelist-based validation** pattern, where only explicitly enumerated error codes are considered acceptable. This is a defensive programming approach commonly used in telecom order fulfillment systems to catch configuration drift — if a new error code appears that was not accounted for during development, this gate will flag it.

The method is a **shared utility** within the `JEKKA0070001TPMA` class, called exclusively by `call_KKIFE401()` during the main transaction flow. It has no side effects, no external state, and no database or service component interactions — it is a pure boolean check with an integer flag mutation.

## 2. Processing Pattern (Detailed Business Logic)

```mermaid
flowchart TD
    START(["isExpectedValue"])
    START --> COND{errorCode in<br>expected set?}
    COND -->|Yes| RET["Return noExpValFlag"]
    COND -->|No| SET["noExpValFlag = 1"]
    SET --> RET
    RET --> END_NODE(["Return"])
```

**Expected error code whitelist:**

| Error Code | Description |
|------------|-------------|
| `1000` | Expected error code #1 |
| `2000` | Expected error code #2 |
| `3000` | Expected error code #3 |
| `3001` | Expected error code #4 |
| `3002` | Expected error code #5 |
| `3003` | Expected error code #6 |
| `3004` | Expected error code #7 |
| `3005` | Expected error code #8 |
| `4000` | Expected error code #9 |
| `5000` | Expected error code #10 |

**Processing steps:**

1. Evaluate whether `errorCode` matches any of the 10 expected values in the whitelist.
2. If **all** checks fail (the code is not in the whitelist), set `noExpValFlag = 1` to mark the error as unexpected.
3. Return `noExpValFlag` — either the original value (if the error code was recognized) or `1` (if it was not).

## 3. Parameter Analysis

| No | Parameter Name | Type | Business Description |
|----|---------------|------|---------------------|
| 1 | `errorCode` | `String` | An error code string representing a system-generated error identifier encountered during the main transaction processing. Codes in the ranges 1xxx, 2xxx, 3xxx, 4xxx, and 5xxx follow a hierarchical classification scheme. The method checks against a fixed whitelist of 10 recognized codes. |
| 2 | `noExpValFlag` | `int` | A flag indicating whether the error code is expected or not. `0` means the error is expected (known, documented). When set to `1` by this method, it signals an **unanticipated** error code was encountered. The initial value is typically `0`, passed in by the caller before validation. |

**No instance fields or external state** are read by this method. It is a pure, static utility function with no dependencies on object state.

## 4. CRUD Operations / Called Services

This method has **no external calls** — no service component (SC) invocations, no CBS calls, and no database operations. It performs a self-contained string comparison and flag update.

| CRUD | SC / CBS | SC Code | Entity / DB | Operation Description |
|------|----------|---------|-------------|----------------------|
| N/A | — | — | — | No external operations. Pure in-memory validation. |

## 5. Dependency Trace

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

No screen/batch entry points found within 8 hops. Direct callers found: 1 methods.

| # | Caller (Screen/Batch) | Call Chain (Full Path to this Method) | Terminal (SC / CRUD / Entity) |
|---|----------------------|--------------------------------------|-------------------------------|
| 1 | JEKKA0070001TPMA.call_KKIFE401() | `call_KKIFE401()` -> `isExpectedValue(errorCode, noExpValFlag)` | None — this method has no CRUD operations |

## 6. Per-Branch Detail Blocks

**Block 1** — IF `(errorCode not in expected set)` (L378)

> The condition checks whether the given errorCode does NOT match any of the 10 known expected error codes. If the negation is true (i.e., the code is unknown), the flag is set to 1.

| # | Type | Code |
|---|------|------|
| 1 | COND | `!"1000".equals(errorCode)` [Expected code: 1000] |
| 2 | COND | OR `"2000".equals(errorCode)` [Expected code: 2000] |
| 3 | COND | OR `"3000".equals(errorCode)` [Expected code: 3000] |
| 4 | COND | OR `"3001".equals(errorCode)` [Expected code: 3001] |
| 5 | COND | OR `"3002".equals(errorCode)` [Expected code: 3002] |
| 6 | COND | OR `"3003".equals(errorCode)` [Expected code: 3003] |
| 7 | COND | OR `"3004".equals(errorCode)` [Expected code: 3004] |
| 8 | COND | OR `"3005".equals(errorCode)` [Expected code: 3005] |
| 9 | COND | OR `"4000".equals(errorCode)` [Expected code: 4000] |
| 10 | COND | OR `"5000".equals(errorCode)` [Expected code: 5000] |
| 11 | SET | `noExpValFlag = 1` | Set flag to indicate unexpected error code |

**Block 2** — RETURN (L385)

| # | Type | Code |
|---|------|------|
| 1 | RETURN | `return noExpValFlag;` | Return the flag — 0 if expected, 1 if unexpected |

## 7. Glossary

| Term | Type | Business Meaning |
|------|------|------------------|
| `errorCode` | Field | Error code string — a system-generated identifier classifying the type of error encountered during transaction processing |
| `noExpValFlag` | Field | No-expectation-value flag — an integer flag where `0` means the error code is known/expected, and `1` means it is unanticipated |
| JEKKA0070001TPMA | Class | Transaction Processor Main Class — the main processing class for the JEKKA0070001 CBS transaction, handling core business logic |
| CBS | Acronym | Component-Based Service — an EJB-based service layer in this architecture that implements business operations |
| TPMA | Suffix | Transaction Processor Main Application — naming convention for main processing EJB classes |
| 期待値フラグ | Japanese field | Expected-value flag — the Japanese comment for `noExpValFlag`, indicating whether a value is expected |
| エラーコード | Japanese field | Error code — the Japanese comment for `errorCode`, an error identifier string |