namespace Prog1A { public abstract class LibraryItem {

Transcription

1 //Program 1a //ben spalding //2/17/15 //this is a complex class heierarchy //cis using System; public abstract class LibraryItem private Int32 _copyrightyear; //the backing field for the copyrightyear property private Int32 _loanperiod; //the backing field for the loanperiod propery private LibraryPatron _patron; //the backing field for the patron property private bool _checkedout; //the backing field for the Checkout, return to shelf, and ischeckedout methods public LibraryItem(String TheTitle, String ThePublisher, Int32 TheCopyrightYear, Int32 TheLoanPeriod, String TheCallNumber) Title = TheTitle; Publisher = ThePublisher; CopyrightYear = TheCopyrightYear; LoanPeriod = TheLoanPeriod; CallNumber = TheCallNumber; ReturnToShelf(); public String Title ; public String Publisher ; public Int32 CopyrightYear //Precondition : An int that is greater then 0 //Postcondition : Valdiates that the int is >0

2 if (_copyrightyear >= 0) return _copyrightyear; throw new ArgumentOutOfRangeException(); //Precondition : an int >0 //Postcondition : assigns _copyrightyear to value value = _copyrightyear; public Int32 LoanPeriod //Precondition : A valid integer //Postcondition : checks to see if the int is >0 if (_loanperiod >= 0) return _loanperiod; throw new ArgumentOutOfRangeException(); //Precondition : a non negative int //Postcondition : assigns _loanperiod to value value = _loanperiod; public String CallNumber ; public LibraryPatron Patron //Precondition: The book must not be checked out //Postcondition: The patron has been returned if (IsCheckedOut()) return _patron; return null;

3 // Postcondition: The book is checked out public void CheckOut(LibraryPatron apatron) _checkedout = true; _patron = apatron; // Postcondition: The book is not checked out public void ReturnToShelf() _checkedout = false; _patron = null; // Postcondition: true is returned if the book is checked out, // otherwise false is returned public bool IsCheckedOut() return _checkedout; public abstract decimal CalcLateFee(); //Postcondition : Outputs a string for the information available in this class return String.Format("Title: 10Publisher: 20Copyright Year: 30Loan Period: 40Call Number50", System.Environment.NewLine.ToString(),Title,Publisher,CopyrightYear,LoanPeriod,CallNumber,IsCheckedOut()?_patron.ToString():null);

4 using System; public class LibraryBook : LibraryItem public LibraryBook(String TheTitle, String TheAuthor, String ThePublisher, Int32 TheCopyrightYear, Int32 TheLoanPeriod, String TheCallNumber) : base(thetitle, ThePublisher, TheCopyrightYear, TheLoanPeriod, TheCallNumber) TheAuthor = Author; public String Author //Precondition : A valid string //Postcondition : returns the value of that string ; //Postcondition : Sets the value of value = the value of author //Postcondition : Calculates the late fee public override decimal CalcLateFee() decimal dailyrate =.25m; //the rate at which the patron is being charged return dailyrate = base.loanperiod * dailyrate; //Postcondition : Outputs a string for the information available in this class return String.Format("1Author: 20",System.Environment.NewLine.ToString(),base.ToString(),Author);

5 using System; class LibraryMagazine : LibraryPeriodical public LibraryMagazine(String TheTitle, String ThePublisher, Int32 TheCopyrightYear, Int32 TheLoanPeriod, String TheCallNumber, Int32 TheVolume, Int32 TheNumber) : base(thetitle, ThePublisher, TheCopyrightYear, TheLoanPeriod, TheCallNumber, TheVolume, TheNumber) //Precondition : A valid loan period //Postcondition : Calculates the late fee according to the loan period public override decimal CalcLateFee() const decimal LOANMAX = 20.00m; //the limit to the late fee const decimal LOANRATE = 0.25m; //the daily rate the patron will be charged decimal calc = LOANRATE * LoanPeriod; //the calculation for the loan period if (calc > LOANMAX) return LOANMAX; return calc; //Postcondition : Outputs the information from the parent class and this class return String.Format("2Late Fee : 10",System.Environment.NewLine,CalcLateFee(),base.ToString());

6 using System; class LibraryJournal : LibraryPeriodical public LibraryJournal(String TheTitle, String ThePublisher, Int32 TheCopyrightYear, Int32 TheLoanPeriod, String TheCallNumber, Int32 TheVolume, Int32 TheNumber, String TheDiscipline, String TheEditor) : base(thetitle, ThePublisher, TheCopyrightYear, TheLoanPeriod, TheCallNumber, TheVolume, TheNumber) TheDiscipline = Discipline; TheEditor = Editor; public String Discipline //Precondition : a string //Postcondition : returns the string ; //Postcondition : s the string to the appropriate value public String Editor //Precondition : a string //Postcondition : returns the string ; //Postcondition : s the string to the appropriate value //Precondition : A valid loan period //Postcondition : Calculates the late fee according to the loan period public override decimal CalcLateFee() const decimal LOANRATE = 0.75m; //The rate at which the patron will be charged return LOANRATE * LoanPeriod; //Postcondition : Outputs the information from the parent class and this class

7 return String.Format("4Discipline : 10Editor : 20 Late Fee : 30", System.Environment.NewLine, Discipline, Editor, CalcLateFee(), base.tostring());

8 using System; public abstract class LibraryMediaItem:LibraryItem private Double _duration; //the backing field for the duration property protected MediaType _medium; //the backing field for the medium property public LibraryMediaItem(String TheTitle, String ThePublisher, Int32 TheCopyrightYear, Int32 TheLoanPeriod, String TheCallNumber, Double TheDuration) :base (TheTitle,ThePublisher,TheCopyrightYear,TheLoanPeriod,TheCallNumber) TheDuration = Duration; public enum MediaType DVD = 0, BLURAY = 1, VHS = 2, CD = 3, SACD = 4, VINYL = 5 public abstract MediaType Medium ; public Double Duration //Precondition : a valid nonnegative int //Postcondition : valiidates that the int is non negative if (_duration >= 0) return _duration; throw new ArgumentOutOfRangeException(); //Postcondition : s the value of value = to _duration value = _duration; //Postcondition : Outputs the information from the parent class and this class return String.Format("2Duration : 10",

9 System.Environment.NewLine, Duration, base.tostring());

10 using System; public class LibraryMovie : LibraryMediaItem public LibraryMovie(String TheTitle, String ThePublisher, Int32 TheCopyrightYear, Int32 TheLoanPeriod, String TheCallNumber, Double TheDuration, String TheDirector, MediaType TheMedium, MPAARatings TheRating) : base(thetitle, ThePublisher, TheCopyrightYear, TheLoanPeriod, TheCallNumber, TheDuration) TheDirector = Director; TheMedium = Medium; public enum MPAARatings G, PG, PG13, R, NC17, U ; public MPAARatings Ratings //Precondition : a valid MPAA value //Postcondition : returns the Mpaa value ; //Postcondition : s the MPAA value appropriatly public String Director //Precondition : a valid string //Postcondition : returns Director ; //Postcondition : Sets the director to the appropriate value public override MediaType Medium //Precondition : A medium object //Postcondition : Checks to see if the medium object is a dvd, bluray, or vhs

11 if (_medium >= MediaType.DVD && _medium <= MediaType.VHS) return _medium; throw new ArgumentOutOfRangeException(); ; //Postcondition : Sets medium to the correct value _medium = value; //Postcondition : calculates the proper late fee public override decimal CalcLateFee() const decimal MAXLATEFEE = 25.00m; //The limit for the late fee const decimal LOANRATELOW = 1.00m; //the lower amount that wil be charged for every day const decimal LOANRATEHIGH = 1.50m; //The higher amount that will be charged for everyday decimal calclow = LOANRATELOW * LoanPeriod; decimal calchigh = LOANRATEHIGH * LoanPeriod; //the calculation for the lower amount //the calculation for the higher amount if (calchigh <= MAXLATEFEE && calclow <= MAXLATEFEE) if (Medium == MediaType.VHS Medium == MediaType.DVD) return calclow; return calchigh; return MAXLATEFEE; //Postcondition : Outputs the information from the parent class and this class return String.Format("5Medium : 10Director : 20Rating : 40Late Fee : 30", System.Environment.NewLine, Medium, Director, CalcLateFee(), Ratings, base.tostring());

12 using System; public class LibraryPatron private String _patronname; // Name of the patron private String _patronid; // ID of the patron // Postcondition: The patron has been initialized with the specified name // and ID public LibraryPatron(String name, String id) PatronName = name; PatronID = id; public String PatronName // Postcondition: The patron's name has been returned return _patronname; // Postcondition: The patron's name has been to the specified value _patronname = value; public String PatronID // Postcondition: The patron's ID has been returned return _patronid;

13 // Postcondition: The patron's ID has been to the specified value _patronid = value; // Postcondition: A string is returned presenting the libary patron's data on // separate lines return String.Format("Name: 02ID: 1", PatronName, PatronID, System.Environment.NewLine);

14 using System; public abstract class LibraryPeriodical : LibraryItem private Int32 _volume; //the bacing field for the volume property private Int32 _number; //the backingfield for the number property public LibraryPeriodical(String TheTitle, String ThePublisher, Int32 TheCopyrightYear, Int32 TheLoanPeriod, String TheCallNumber, Int32 TheVolume, Int32 TheNumber) : base(thetitle, ThePublisher, TheCopyrightYear, TheLoanPeriod, TheCallNumber) TheVolume = Volume; TheNumber = Number; public Int32 Volume //Precondition : A nonnegative int //Postcondition : returns _volume or throws an error if (_volume > 0) return _volume; throw new ArgumentOutOfRangeException(); //Precondition : noen //Postcondition : s _volume equal to the approriate value value = _volume; public Int32 Number //Precondition : nonegative int //Postcondition : returns _number or throws an error if (_number> 0) return _number; throw new ArgumentOutOfRangeException();

15 //Precondition : none //Postcondition : s _number to the appropriate value value = _number; //Postcondition : Outputs the information from the parent class and this class return String.Format("3Volume : 10Number : 20", System.Environment.NewLine, Volume, Number, base.tostring());