/// <summary>
/// Performs an OR query on a list of lists of books, returning the resulting list of books.
/// </summary>
/// <param name="books">The list of lists of books</param>
/// <returns>The resulting list of books</returns>
public List <Book> PerformQuery(List <List <Book> > books)
{
List <Book> requestedBooks = new List <Book>();
foreach (List <Book> currentBook in books)
{
requestedBooks = SetOperations <Book> .Union(requestedBooks, currentBook);
}
return(requestedBooks);
}
/// <summary>
/// Performs an OR internal query, returning the result list of books.
/// </summary>
/// <returns>The result list of books</returns>
public List <Book> ORInternalQuery()
{
List <Book> requestedBooks = new List <Book>();
foreach (YearOfPublishing aYearOfPublishing in yearsOfPublishing)
{
requestedBooks = SetOperations <Book> .Union(requestedBooks,
booksManager.BooksRepository.GetAllBooksWithYearOfPublishing(aYearOfPublishing));
}
return(requestedBooks);
}
/// <summary>
/// Performs an OR internal query, returning the result list of books.
/// </summary>
/// <returns>The result list of books</returns>
public List <Book> ORInternalQuery()
{
List <Book> requestedBooks = new List <Book>();
foreach (Tag aTag in tags)
{
requestedBooks = SetOperations <Book> .Union(requestedBooks,
booksManager.BooksRepository.GetAllBooksWithTag(aTag));
}
return(requestedBooks);
}
/// <summary>
/// Performs an OR internal query, returning the result list of books.
/// </summary>
/// <returns>The result list of books</returns>
public List <Book> ORInternalQuery()
{
List <Book> requestedBooks = new List <Book>();
foreach (PublishingHouse aPublishingHouse in publishingHouses)
{
requestedBooks = SetOperations <Book> .Union(requestedBooks,
booksManager.BooksRepository.GetAllBooksWithPublishingHouse(aPublishingHouse));
}
return(requestedBooks);
}
/// <summary>
/// Performs an OR internal query, returning the result list of books.
/// </summary>
/// <returns>The result list of books</returns>
public List <Book> ORInternalQuery()
{
List <Book> requestedBooks = new List <Book>();
foreach (Author anAuthor in authors)
{
requestedBooks = SetOperations <Book> .Union(requestedBooks,
booksManager.BooksRepository.GetAllBooksWithAuthor(anAuthor));
}
return(requestedBooks);
}
/// <summary>
/// Performs an AND internal query, returning the result list of books.
/// </summary>
/// <returns>The result list of books</returns>
public List <Book> ANDInternalQuery()
{
List <Book> requestedBooks = new List <Book>();
if (tags.Count > 0)
{
requestedBooks = booksManager.BooksRepository.GetAllBooksWithTag(tags[0]);
for (int i = 1; i < tags.Count; i++)
{
requestedBooks = SetOperations <Book> .Intersection(requestedBooks,
booksManager.BooksRepository.GetAllBooksWithTag(tags[i]));
}
}
return(requestedBooks);
}
/// <summary>
/// Performs an AND internal query, returning the result list of books.
/// </summary>
/// <returns>The result list of books</returns>
public List <Book> ANDInternalQuery()
{
List <Book> requestedBooks = new List <Book>();
if (yearsOfPublishing.Count > 0)
{
requestedBooks = booksManager.BooksRepository.GetAllBooksWithYearOfPublishing(yearsOfPublishing[0]);
for (int i = 1; i < yearsOfPublishing.Count; i++)
{
requestedBooks = SetOperations <Book> .Intersection(requestedBooks,
booksManager.BooksRepository.GetAllBooksWithYearOfPublishing(yearsOfPublishing[i]));
}
}
return(requestedBooks);
}
/// <summary>
/// Performs an AND query on a list of lists of books, returning the resulting list of books.
/// </summary>
/// <param name="books">The list of lists of books</param>
/// <returns>The resulting list of books</returns>
public List <Book> PerformQuery(List <List <Book> > books)
{
List <Book> requestedBooks;
if (books.Count == 0)
{
requestedBooks = new List <Book>();
}
else
{
requestedBooks = books[0];
for (int i = 1; i < books.Count; i++)
{
requestedBooks = SetOperations <Book> .Intersection(requestedBooks, books[i]);
}
}
return(requestedBooks);
}
