class BookList():
"""
This class encapsulates the book list and adds easy to use methods for manipulating it
"""
def __init__(self):
self.bookList = list()
self.validator = Validator()
def addNewBook(self, title, author, description):
"""
Adds a new book to the book list
All the parameters are strings
Returns an error list generated by the Validator
O(1)
"""
book = Book(title, author, description)
errorList = self.validator.validateBook(book)
if errorList != []:
return errorList
self.bookList.append(book)
def removeBook(self, book, p):
"""
Public method that overwrites the one in BookList
Extra functionality: Writes the entire list to the file
Best case O(1)
Worst case O(n)
Average case O(n)
"""
if self.bookList[p] == book:
self.bookList.pop(p)
return True
else:
ret = self.removeBook(book, p+1)
if ret != True:
return False
else:
return True
def updateBook(self, oldTitle, oldAuthor, oldDescription, \
newTitle, newAuthor, newDescription):
"""
Replaces a book from the list with a new book
All the parameters are strings
Returns False if the book is not found, True otherwise
O(n)
"""
book = Book(oldTitle, oldAuthor, oldDescription)
newBook = Book(newTitle, newAuthor, newDescription)
found = False
for bookInList in reversed(self.bookList):
if bookInList == book:
found = True
self.bookList[self.bookList.index(bookInList)] = newBook
return found
def numberOfBooks(self):
"""
Returns the number of books from the list
O(1)
"""
return len(self.bookList)
def lastAddedBook(self):
"""
Returns the instance of the latest added book
O(1)
"""
return self.bookList[len(self.bookList) - 1]
def bookInList(self, title, author, description):
"""
Returns a list of book instances that have the passed details
All the parameters are strings
O(n)
"""
book = Book(title, author, description)
booksFound = []
for bookInList in reversed(self.bookList):
if bookInList == book:
booksFound.append(bookInList)
return booksFound
def findBook(self, query):
"""
Searches for a book in the list
query is a string
Returns a list of found books
O(n)
"""
booksFound = list()
for bookInList in reversed(self.bookList):
if bookInList.getAuthor() == query or bookInList.getTitle() == query or bookInList.getDescription() == query:
booksFound.append(bookInList)
return booksFound
def orderBooks(self, direction):
"""
Returns a sorted list of books by popularity based on the direction passed
direction can be either "asc" or "desc"
O(n)
"""
reverse = True
if direction == "asc":
reverse = False
return sorted(self.bookList, key=lambda book:book.getPopularity(), reverse=reverse)
def lendBook(self, books, client):
"""
Sets a book's borrowed property to True
books is a list of Book instances
client is an instance of a Client
returns the instance of the book that was set or False if all the books are borrowed
O(n)
"""
for book in books:
if not book.isBorrowed():
book.setBorrowed(True)
return book
return False
def returnBook(self, books, client):
"""
Sets a book's borrowed property to False
books is a list of Book instances
client is an instance of a Client
Returns the instance of the book that was set or False if all the books are borrowed
O(n)
"""
for book in books:
if book.isBorrowed():
book.setBorrowed(False)
return book
return False
def __str__(self):
bookList = ""
for book in self.bookList:
bookList += str(book) + '\n'
return bookList
class ClientList():
"""
This class encapsulates the client list and adds easy to use methods for manipulating it
"""
def __init__(self):
self.clientList = list()
self.validator = Validator()
def addNewClient(self, name, cnp):
"""
Adds a new client to the client list
All the parameters are strings
Returns the error list generated by the Validator
O(n)
"""
client = Client(name, cnp)
errorList = self.validator.validateClient(self.clientList, client)
if errorList != []:
return errorList
self.clientList.append(client)
def removeClient(self, name, cnp):
"""
Removes a client from the list
All the parameters are strings
Returns False if the client is not found, True otherwise
O(n)
"""
client = Client(name, cnp)
found = False
for clientInList in reversed(self.clientList):
if clientInList == client:
found = True
self.clientList.pop(self.clientList.index(clientInList))
return found
def updateClient(self, oldName, oldCnp, newName, newCnp):
"""
Replaces a client from the list with a new client
All the parameters are strings
Returns False if the client is not found, True otherwise
O(n)
"""
client = Client(oldName, oldCnp)
newClient = Client(newName, newCnp)
found = False
for clientInList in reversed(self.clientList):
if clientInList == client:
found = True
self.clientList[self.clientList.index(clientInList)] = newClient
return found
def borrowBook(self, book, client):
"""
Adds a Book instance to a client's borrowed book list
book is an instance of a Book
O(1)
"""
client.addBorrowedBook(book)
def returnBook(self, book, client):
"""
Removes a Book instance from a client's borrowed book list
book is an instance of a Book
client is an instance of a Client
O(n)
"""
client.removeBorrowedBook(book)
def numberOfClients(self):
"""
Returns the number of clients from the list
O(1)
"""
return len(self.clientList)
def lastAddedClient(self):
"""
Returns the instance of the latest added client
O(1)
"""
return self.clientList[len(self.clientList) - 1]
def clientInList(self, name, cnp):
"""
Returns the client object from the list, which has the passed details
name and cnp are strings
Returns False if no clients were found
Best case O(1)
Worst case O(n)
Average case O(n)
"""
client = Client(name, cnp)
for clientInList in reversed(self.clientList):
if clientInList == client:
return clientInList
return False
def findClient(self, query):
"""
Searches for books in the client list
Returns a list with instances of all the found clients
query is a string
O(n)
"""
foundClients = list()
for clientInList in reversed(self.clientList):
if clientInList.getName() == query or clientInList.getCnp() == query:
foundClients.append(clientInList)
return foundClients
def orderClients(self, direction):
"""
Returns a client list ordered by activity
Direction is set by the parameter direction which can be
asc or desc
O(n)
"""
reverse = True
if direction == "asc":
reverse = False
return sorted(self.clientList, key=lambda client:client.getActivity(), reverse=reverse)
def __str__(self):
clientList = ""
for client in self.clientList:
clientList += str(client) + '\n'
return clientList
def __init__(self):
self.clientList = list()
self.validator = Validator()
def __init__(self):
self.bookList = list()
self.validator = Validator()
