Patt#9. "Item - Line Item" Pattern // transaction
patterns

Typical object interactions
- howMany --> getQuantity
- calcOverLineItems --> calcForMe
- rankLineItems --> rateMe
Examples
- (with transaction line items) item - order line item;
item - payment line item; item - rental line item; item -
sale line item; item - shipment line item (with container
line items) item - bin line item; item - warehouse line
item.
Combinations
- Patt#6. "Transaction -
Transaction Line Item"
- Patt#8. "Transaction
Line Item - Subsequent Transaction Line Item"
- Patt#15. "Container -
Container Line Item."
Related strategies:
- Str#16. "Select
Tangible Things" Strategy
- Str#19. "Select Items
and Specific Items" Strategy
- Str#55. "Establish Item
and Specific Item Attributes" Strategy
- Str#77. "Establish Item
and Specific Item Object Connections" Strategy
- Str#97. "Establish Item
& Specific Item Services" Strategy
Transaction patterns
Patterns for building object
models