BELOW IS QUESTION DESCRIPTION AND THE UML DIAGRAMS THAT I HAVE MANAGED TO COME UP WITH BASED ON MY UNDERSTANDING. CAN SOMEONE PLEASE REVIEW IT AND TELL ME IF THE CLASSES ARE CORRECT PLEASE....
URGENTLY NEED ASSISTANCE!!!!!!!!!!!
THANKS!!!!!!!!!!!!!!!!!!!!!
Make use of inheritance, polymorphism, dynamic-binding, encapsulation, data abstraction, persistence through file handling and defensive programming using exception handling techniques.
Description
DigiCel, Lime and Flow currently offer business telephone service, each with its own method of billing for calls, to corporate clients in Jamaica. DigiCel offers prepaid and postpaid fixed unit systems using its cellular telephone network. For its prepaid systems, DigiCel allows the user to add call credit to a DigiCel prepaid telephone number by purchasing call credit cards in denominations of $100, $200, $500 and $1000. Each call credit card has a unique 13-digit card number. To add the call credit, one dials asterisk, one, two, one, asterisk, followed by the 13-digit number followed by the number sign, e.g. *121*123456789012#. If its the first time for the month that credit is being added, a bonus of $100 is also added to the phone number. If its a public holiday, the amount of credit being added is doubled.
Calls are billed at $10 per minute to other DigiCel phones, and $14 per minute to other telephone networks. When a call is placed, the appropriate amount for each minute is deducted from the telephone number's account until the prepaid call credit is finished or the telephone call is terminated.
For its postpaid system, DigiCel allows the user to place calls to any number using its postpaid telephone. Calls are billed at $8 per minute to other DigiCel phones, and $12 per minute to other telephone networks. When a call is placed from a DigiCel postpaid telephone, the appropriate amount for the total minutes spent on the call is added to the telephone number's account. At the end of the month, the telephone bill for that telephone number is generated and sent to the customer who then makes a payment to clear the bill.
All DigiCel fixed unit telephone numbers begin with the prefixes 618, 619, 648 or 649.
Lime offers prepaid and postpaid fixed unit systems using its cellular telephone network, as well as landline telephones. For its prepaid fixed systems, Lime allows the user to add call credit to a Lime OOP Group Project 2011-2012 Semester Two 1 of 3 prepaid telephone number by purchasing call credit cards in denominations of $100, $200, $500 and $1000. Each call credit card has a unique 12-digit card number. To add the call credit, one dials asterisk, one, two, one, asterisk, followed by the 12-digit number followed by the number sign, e.g
*121*123456789012#. If it’s the first time for the month that credit is being added, a bonus of $100 is also added to the phone number. If its a public holiday, the amount of credit being added is doubled.
Calls are billed at $10 per minute to other Lime phones, and $14 per minute to other telephone networks. When a call is placed, the appropriate amount for each minute is deducted from the telephone number's account until the prepaid call credit is finished or the telephone call is terminated.
For its postpaid system, Lime allows the user to place calls to any number using its postpaid telephone.
Calls are billed at $8 per minute to other Lime phones, and $12 per minute to other telephone networks.
When a call is placed from a Lime postpaid telephone, the appropriate amount for the total minutes spent on the call is added to the telephone number's account. At the end of the month, the telephone bill for that telephone number is generated and sent to the customer who then makes a payment to clear the bill.
All Lime fixed unit telephone numbers begin with the prefixes 210, 310, 312, 313 or 314. Lime landline numbers begin with the prefixes 920, 754, 968, 928 or 927.
Flow offers prepaid and postpaid fixed unit systems using its cellular telephone network. For its prepaid systems, Flow allows the user to add call credit to a Flow prepaid telephone number by purchasing call credit cards in denominations of $100, $200, $500 and $1000. Each call credit card has a unique 12-digit card number. To add the call credit, one dials asterisk, one, two, one, asterisk, followed by the 12-digit number followed by the number sign, e.g. *121*123456789012#. If it’s the first time for the month that credit is being added, a bonus of $100 is also added to the phone number.
If it’s a public holiday, the amount of credit being added is doubled. Calls are billed at $10 per minute to other Flow phones, and $14 per minute to other telephone networks. When a call is placed, the appropriate amount for each minute is deducted from the telephone number's account until the prepaid call credit is finished or the telephone call is terminated.
All Flow fixed unit telephone numbers begin with the prefixes 620, 622, 630, 631, 632 or 633.
On all telephone networks, calls to designated emergency numbers do not attract a charge. These numbers are Fire – 110, Ambulance 110, Police 119, Crime Stop Air/Sea Rescue – 119, or Office of Disaster Preparedness and Emergency Management – 906-9674.
ComTech has designed a smart corporate telephone (SCT) system that allows the user to dial a number and it will place the call on the most cost effective network. The system will keep trace of all calls and associated costs each month, and be able to display reports on call activity.
You have been hired to develop the software for the ComTech SCT, using object oriented design and programming principles.
Code:________________________________ Network //(is a){Aggregate}PARENT CLASS _________________________________ - Network : string - ServType: string - callStart : int - callEnd: int - maxCallTime:int __________________________________ +setNo ( ) +type() //has code telling name and type __________________________________ --------------------------------------- __________________ Digicel //IS A CHILD OF NETWORK __________________ +setNo(): int +type(): string __________________ ---------------------------- __________________ Lime //IS A CHILD OF NETWORK ___________________ +setNo(): int +type(): string ___________________ ------------------------------ ___________________ Flow //IS A CHILD OF NETWORK ____________________ +setNo(): int +type(): string _____________________ ------------------------------- _____________________ Phone //(many)MAYNOR MAY NOT BE CONTAINED IN NETWORK _____________________ # phoneNo : int #network: string _____________________ +makeCall( ) +endCall( ) +checkBalance ( ) _____________________ -------------------------------- ________________________ RandCalc //(dependent)IS A CHILD OF NETWORK ________________________ Generate ( ) //generates suffix 4 #s // generates phonecard ________________________ ---------------------------------- _____________________ phoneCall(ONE)//MAY OR MAY NOT BE CONTAINED IN PHONE ______________________ -callId: int -startTime: int -endTime: int _____________________ +Connect( ) +getTime( ) +CalculateCost ( ) _____________________ 1 . . . *______________________ . Account //(many)MAY OR MAY NOT BE CONTAINED IN NETWORK ______________________ # phoneNo : int #network: string _______________________ +CalcCost ( ) +checkBalance ( ) ________________________ ----------------------------------------------------------------- _________________________ service //{abstract} PARENT CLASS _________________________ # callStart : int # callEnd: int # maxCallTime:int __________________________ + getService(ch) + setNo(): int//getNo + type(): string{abstract} ___________________________ ---------------------------------- ___________________________ digicel//IS A CHILD OF SERVICE ___________________________ +setNo(): int +type(): string ___________________________ ----------------------------------- ___________________________ lime//IS A CHILD OF SERVICE ___________________________ +setNo(): int +type(): string ___________________________ -------------------------------------- ___________________________ flow//IS A CHILD OF SERVICE ___________________________ +setNo(): int +type(): string ___________________________
