Service representatives
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Service Representatives PowerPoint PPT Presentation


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1. Service Representatives. Customers. 1-*. 1-*. service the. buy items from the. 1. 1. Mark I Vending Machine (MIVM) System {application}. 4. The model layer contains 2 packages: Role package Dispenser package. CLIENT INTERFACE LAYER. handles and interprets

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Service Representatives

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Service representatives

1

Service

Representatives

Customers

1-*

1-*

service the

buy items from the

1

1

Mark I Vending Machine (MIVM) System

{application}


Service representatives

4

  • The model layer contains

  • 2 packages:

  • Role package

  • Dispenser package

CLIENT INTERFACE LAYER

handles and interprets

custom operating system interrupts for the

COORDINATION LAYER

coordinates and forwards appropriate inputs to the

MODEL LAYER

reuses application-independent classes from the

controls output devices and displays non-mode information via the

displays mode information via the

SERVER INTERFACE LAYER

reuses application- independent classes from the

reuses application-information classes from the

reuses application-independent classes from the

FOUNDATION LAYER


Service representatives

5

10

10

10

number-

Selection-

Buttons

8

letter-

Selection-

Buttons

CUSTOM OPERATING SYSTEM

customOperatingSystemInterrupts

event (aString);

CLIENT

INTERFACE

PACKAGE

tripped ();

door-

Switch

pressed ();

pressed ();

pressed ();

inserted

(aBill);

inserted

(aCoin);

pressed ();

locked ();

refund-

Button

bill-

Validator

coin-

Validator

gate

mode-

Button

valid (aCoin);

selected (aLetter);

changeMode ();

valid (aBill);

refund ();

selected (anInteger);

currentModeProxy

doorLocked ();

COORDINATION

PACKAGE


Service representatives

6

10

10

10

number-

Selection-

Buttons

8

letter-

Selection-

Buttons

CLIENT INTERFACE

PACKAGE

bill-

Validator

coin-

Validator

door

mode-

Button

refund-

Button

currentModeProxy

valid (aCoin);

selected (aLetter);

changeMode ();

doorLocked ();

selected (anInteger);

refund ();

valid (aBill);

COORDINATION PACKAGE

displayMessages ();

refund ();

reset ();

selected (anInteger);

selected (aLetter);

valid (aMoney);

refund ();

reset ();

selected (anInteger);

selected (aLetter);

valid (aMoney) throws UnexpectedMoneyException;

refund ();

reset ();

selected (anInteger);

selected (aLetter);

valid (aMoney) throws UnexpectedMoneyException;

dispenseItemMode

displayHistoryMode

setPriceMode

serviceRepresentative

display (currentMode);

displayMessages ();

refund ();

reset () throws

CouldNotResetException;

selected (anInteger);

selected (aLetter);

valid (aMoney);

displayTotalIncome ();

displayTotalItemsSold ();

reset ();

selected (anInteger);

selected (aLetter);

coinDispenserAssemblyLoaded ();

main-

Display

customer

SERVER

INTERFACE

PACKAGE

ROLE PACKAGE


Service representatives

serviceRepresentative

8

10

10

3

coin-

Dispensers

80

items-

Dispensers

customer-

Messages

ROLE PACKAGE

service-

Representative-

Selection

customer-

Credit

customer-

Selection

getTotalIncome ();

getTotalItemsSold ();

isWarningNeeded ();

coinDispenserAssembly

itemDispenserAssembly

dispense (aMoney) throws CouldNotDispense-

AllException;

inserted (aCoin);

loaded ();

priceAt (aLocation) throws InvalidSelectionException;

priceAt (aLocation,aMoney) throws

InvalidSelectionException;

dispenseAt (aLocation) throws InvalidSelectionException;

priceAt (aLocation) throws

InvalidSelectionException;

isPractical (aPrice);

DISPENSER PACKAGE

dispense (aMoney) throws CouldNotDispenseAllException;

isPractical (aPrice);

coinDispensingPolicy

dispense () throws InvalidSelectionException;

price () throws InvalidSelectionException;

price (aMoney) throws InvalidSelectionException;

coinType ();

haveCoin ();

coinInserted ();

next ();

coinType ();

dispense () throws CouldNotDispenseException;

itemStepperMode

coinSolenoid

step (360) throws

NoMotorException;

display (aLocation,aPrice)

throws NoItemDisplayException;

push () throws NoCoinException;

itemDisplay

SERVER INTERFACE PACKAGE


Service representatives

currentModeProxy

9

10

10

80

item-

Dispensers

3

coin-

Dispensers

serviceRepresentative

COORDINATION PACKAGE

customer

ROLE

PACKAGE

DISPENSER PACKAGE

service-

Representative-

Selection

customer-

Messages

customer-

Selection

customOperatingSystemCalls

itemStepperMotor

display (aString);

push () throws NoCoinException;

step (360) throws NoMotorException;

display (aLocation,aPrice)

throws NoItemDisplayException;

itemDisplay

mainDisplay

coinSolenoid

dispenseCoinFrom (aPort) throws FailedException;

dispenseItemFrom

(aPort) throws FailedException;

itemDisplay

(aString,aPort)

throws FailedException;

mainDisplay (aString);

SERVER INTERFACE PACKAGE


Service representatives

11

Precondition: The mode is

“DispenseItem”.

Postcondition: The mode is

“DispenseItem”.

Customer Makes a Payment.

MIVM

Software

A: Concurrently

Customer

Inserts

a Valid Bill

A: and

Customer

Inserts

a Valid Coin

A: end concurrently.


Service representatives

12

custom-

OperatingSystem

Interrupts

custom-

Operating-

SystemCalls

Precondition:

currentMode =

dispenseItemMode

Customer Inserts a Valid Bill.

bill-

Validator

current-

ModeProxy

dispense-

ItemMode

customer

customer-

Credit

customer-

Selection

main-

Display

inserted

(aBill);

valid (aBill);

valid (aBill);

valid (aBill);

add (aBill);

creditIncremented ();

A: If itemSelected

Attempt to

Dispense

A: else

display ();

display (amount);

displayMain

(amount);

A: end if.


Service representatives

coin-

Dispenser-

Assembly

coin-

Dispensing-

Policy

13

Dispense Changes.

customer-

Credit

dispense (credit);

dispense (credit);

A: If credit >= Money.none ()

Dispense

Quarters

A: end if.

B: If credit >= Money.none ()

Dispense

Dimes

B: end if.

C: If credit >= Money.none ()

Dispense

Nickels

C: end if.

Display

Greeting


Service representatives

coin-

Dispensing-

Policy

customOperating-

SystemCalls

aCoinDispenser

aCoinSolenoid

coin-

Dispensers

14

canDispense = true;

amountToDispense = credit.amount ();

Dispense Quarters.

amountToDispense =

amountToDispense - Coin.quarter ();

A: For each coin dispenser in coinDispensers

while the amount to dispense is not

less than a quarter, loop

next ();

coinType ();

B: If coinType () = Coin.quarter (), then

C: While amount to dispense is not less than

a quarter and can dispense,

loop

dispense ();

dispenseCoinFrom (aPort);

push ();

D: If a quarter was dispensed, then

FailedException!

D: else

NoCoinException!

CouldNotDispenseException!

D: end if.

C: end loop.

B: end if.

A: end loop.


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