# 1. Goal
Give the total value of each order. A report and an OData service will read the
totals, so the calculation must be in the database, in a CDS view.

# 2. Open questions
None.

# 3. Context
- Table {{P}}ORD (order header), package $TMP. Key: ORDER_ID (CHAR 10).
  Fields: CUSTOMER (CHAR 10), ORDER_DATE (DATS).
- Table {{P}}ITM (order item), package $TMP. Key: ORDER_ID (CHAR 10), ITEM_NO (INT4).
  Fields: PRODUCT (CHAR 10), QUANTITY (INT4), PRICE (DEC 15,2, price for one unit).

# 4. Contract
- Create the CDS view entity {{P}}I_ORDER_TOTAL in package $TMP.
- Elements, with these names: ORDER_ID (key), CUSTOMER, ITEM_COUNT, TOTAL_AMOUNT.
- No authorization check (#NOT_REQUIRED).

# 5. Business rules
1. Show one row for each order that has at least one item. Do not show an order
   without items.
2. ITEM_COUNT is the number of items of the order.
3. TOTAL_AMOUNT is the sum of QUANTITY multiplied by PRICE for all items of the
   order, with 2 decimals.

# 6. Constraints
- Release target: 7.58.
- Out of scope: do not change {{P}}ORD and {{P}}ITM.

# 7. Acceptance
- The view is active and has no syntax error.
- The hidden tests pass.
- Write ABAP Unit tests with CL_CDS_TEST_ENVIRONMENT in a global test class.