diff --git a/src/main/java/com/epam/izh/rd/online/entity/Author.java b/src/main/java/com/epam/izh/rd/online/entity/Author.java index 166be587..f3d07c9a 100644 --- a/src/main/java/com/epam/izh/rd/online/entity/Author.java +++ b/src/main/java/com/epam/izh/rd/online/entity/Author.java @@ -19,5 +19,74 @@ * 6) Переопределить метод toString с выводом всех полей (не забывайте alt+inset) */ public class Author { + private String name; + private String lastName; + private LocalDate birthdate; + private String country; + public Author() { + } + + public Author(String name, String lastName, LocalDate birthdate, String country) { + this.name = name; + this.lastName = lastName; + this.birthdate = birthdate; + this.country = country; + } + + public String getName() { + return name; + } + + public void setName(String name) { + this.name = name; + } + + public String getLastName() { + return lastName; + } + + public void setLastName(String lastName) { + this.lastName = lastName; + } + + public LocalDate getBirthdate() { + return birthdate; + } + + public void setBirthdate(LocalDate birthdate) { + this.birthdate = birthdate; + } + + public String getCountry() { + return country; + } + + public void setCountry(String country) { + this.country = country; + } + + @Override + public boolean equals(Object o) { + if (this == o) return true; + if (o == null || getClass() != o.getClass()) return false; + Author author = (Author) o; + return Objects.equals(name, author.name) && + Objects.equals(lastName, author.lastName); + } + + @Override + public int hashCode() { + return Objects.hash(name, lastName, birthdate, country); + } + + @Override + public String toString() { + return "Author{" + + "name='" + name + '\'' + + ", lastName='" + lastName + '\'' + + ", birthday=" + birthdate + + ", country='" + country + '\'' + + '}'; + } } diff --git a/src/main/java/com/epam/izh/rd/online/entity/Book.java b/src/main/java/com/epam/izh/rd/online/entity/Book.java index 08bdccb8..8681b2af 100644 --- a/src/main/java/com/epam/izh/rd/online/entity/Book.java +++ b/src/main/java/com/epam/izh/rd/online/entity/Book.java @@ -16,5 +16,52 @@ * 6) Переопределить метод toString с выводом всех полей (не забывайте alt+inset) */ public abstract class Book { + private int numberOfPages; + private String name; + public Book() { + } + + public Book(int numberOfPages, String name) { + this.numberOfPages = numberOfPages; + this.name = name; + } + + public int getNumberOfPages() { + return numberOfPages; + } + + public String getName() { + return name; + } + + public void setNumberOfPages(int numberOfPages) { + this.numberOfPages = numberOfPages; + } + + public void setName(String name) { + this.name = name; + } + + @Override + public boolean equals(Object o) { + if (this == o) return true; + if (o == null || getClass() != o.getClass()) return false; + Book book = (Book) o; + return numberOfPages == book.numberOfPages && + Objects.equals(name, book.name); + } + + @Override + public int hashCode() { + return Objects.hash(numberOfPages, name); + } + + @Override + public String toString() { + return "Book{" + + "numberOfPages=" + numberOfPages + + ", name='" + name + '\'' + + '}'; + } } diff --git a/src/main/java/com/epam/izh/rd/online/entity/SchoolBook.java b/src/main/java/com/epam/izh/rd/online/entity/SchoolBook.java index a9834db4..52a12ce0 100644 --- a/src/main/java/com/epam/izh/rd/online/entity/SchoolBook.java +++ b/src/main/java/com/epam/izh/rd/online/entity/SchoolBook.java @@ -20,5 +20,66 @@ * 6) Переопределить метод toString с выводом всех полей (не забывайте alt+inset) */ public class SchoolBook extends Book { + private String authorName; + private String authorLastName; + private LocalDate publishDate; + public SchoolBook() { + } + + public SchoolBook(int numberOfPages, String name, String authorName, String authorLastName, LocalDate publishDate) { + super(numberOfPages, name); + this.authorName = authorName; + this.authorLastName = authorLastName; + this.publishDate = publishDate; + } + + public String getAuthorName() { + return authorName; + } + + public void setAuthorName(String authorName) { + this.authorName = authorName; + } + + public String getAuthorLastName() { + return authorLastName; + } + + public void setAuthorLastName(String authorLastName) { + this.authorLastName = authorLastName; + } + + public LocalDate getPublishDate() { + return publishDate; + } + + public void setPublishDate(LocalDate publishDate) { + this.publishDate = publishDate; + } + + @Override + public boolean equals(Object o) { + if (this == o) return true; + if (o == null || getClass() != o.getClass()) return false; + if (!super.equals(o)) return false; + SchoolBook that = (SchoolBook) o; + return Objects.equals(authorName, that.authorName) && + Objects.equals(authorLastName, that.authorLastName) && + Objects.equals(publishDate, that.publishDate); + } + + @Override + public int hashCode() { + return Objects.hash(super.hashCode(), authorName, authorLastName, publishDate); + } + + @Override + public String toString() { + return "SchoolBook{" + + "authorName='" + authorName + '\'' + + ", authorLastName='" + authorLastName + '\'' + + ", publishDate=" + publishDate + + '}'; + } } diff --git a/src/main/java/com/epam/izh/rd/online/repository/AuthorRepository.java b/src/main/java/com/epam/izh/rd/online/repository/AuthorRepository.java index c62bd4e9..302b6cf8 100644 --- a/src/main/java/com/epam/izh/rd/online/repository/AuthorRepository.java +++ b/src/main/java/com/epam/izh/rd/online/repository/AuthorRepository.java @@ -2,6 +2,9 @@ import com.epam.izh.rd.online.entity.Author; +import java.util.ArrayList; +import java.util.Arrays; + /** * Интерфейс репозитория для хранения данных об авторах. *

@@ -57,3 +60,4 @@ public interface AuthorRepository { */ int count(); } + diff --git a/src/main/java/com/epam/izh/rd/online/repository/BookRepository.java b/src/main/java/com/epam/izh/rd/online/repository/BookRepository.java index 7358e99b..74475b48 100644 --- a/src/main/java/com/epam/izh/rd/online/repository/BookRepository.java +++ b/src/main/java/com/epam/izh/rd/online/repository/BookRepository.java @@ -1,6 +1,11 @@ package com.epam.izh.rd.online.repository; +import com.epam.izh.rd.online.entity.Author; import com.epam.izh.rd.online.entity.Book; +import com.epam.izh.rd.online.entity.SchoolBook; + +import java.util.ArrayList; +import java.util.Arrays; /** * Интерфейс репозитория для хранения данных о книгах @@ -52,3 +57,4 @@ public interface BookRepository { */ int count(); } + diff --git a/src/main/java/com/epam/izh/rd/online/repository/SimpleAuthorRepository.java b/src/main/java/com/epam/izh/rd/online/repository/SimpleAuthorRepository.java new file mode 100644 index 00000000..f54a5a28 --- /dev/null +++ b/src/main/java/com/epam/izh/rd/online/repository/SimpleAuthorRepository.java @@ -0,0 +1,61 @@ +package com.epam.izh.rd.online.repository; + +import com.epam.izh.rd.online.entity.Author; + +import java.util.Arrays; + +public class SimpleAuthorRepository implements AuthorRepository{ + + Author[] authors = new Author[0]; + private int cnt; + + @Override + public boolean save(Author author) { + if (findByFullName(author.getName(), author.getLastName()) != null){ + return false; + } + authors = Arrays.copyOf(authors, authors.length + 1); + authors[authors.length - 1] = author; + return true; + } + + @Override + public Author findByFullName(String name, String lastname) { + cnt = 0; + for(Author author:authors){ + if (author.getName().equals(name) && author.getLastName().equals(lastname)){ + return author; + } + cnt++; + } + return null; + } + + /** + * Метод должен удалять автора из массива authors, если он там имеется. + * Автора опять же, можно определять только по совпадению имении и фамилии. + *

+ * Важно: при удалении автора из массива размер массива должен уменьшиться! + * То есть, если мы сохранили 2 авторов и вызвали count() (метод ниже), то он должен вернуть 2. + * Если после этого мы удалили 1 автора, метод count() должен вернуть 1. + *

+ * Если автор был найден и удален, метод должен вернуть true, в противном случае, если автор не был найден, метод + * должен вернуть false. + */ + @Override + public boolean remove(Author author) { + if (findByFullName(author.getName(), author.getLastName()) == null){ + return false; + } + + System.arraycopy(authors, cnt + 1, authors, cnt, + authors.length - cnt - 1); + authors = Arrays.copyOf(authors,authors.length - 1); + return true; + } + + @Override + public int count() { + return authors.length; + } +} diff --git a/src/main/java/com/epam/izh/rd/online/repository/SimpleSchoolBookRepository.java b/src/main/java/com/epam/izh/rd/online/repository/SimpleSchoolBookRepository.java new file mode 100644 index 00000000..1c097f6e --- /dev/null +++ b/src/main/java/com/epam/izh/rd/online/repository/SimpleSchoolBookRepository.java @@ -0,0 +1,62 @@ +package com.epam.izh.rd.online.repository; + +import com.epam.izh.rd.online.entity.SchoolBook; + +import java.util.Arrays; + +public class SimpleSchoolBookRepository implements BookRepository{ + + SchoolBook[] schoolBooks = new SchoolBook[0]; + /** + * Метод должен сохранять школьную книгу в массив schoolBooks. + * Массив при каждом сохранении должен увеличиваться в размере ровно на 1. + * То есть он ровно того размера, сколько сущностей мы в него сохранили. + *

+ * Одну и ту же книгу МОЖНО сохранить в массиве несколько раз, проверки на то, что такая книга уже сохранена, делать не нужно. + *

+ * Если сохранение прошло успешно, метод должен вернуть true. + */ + @Override + public boolean save(SchoolBook book) { + schoolBooks = Arrays.copyOf(schoolBooks, schoolBooks.length + 1); + schoolBooks[schoolBooks.length - 1] = book; + return true; + } + + @Override + public SchoolBook[] findByName(String name) { + SchoolBook[] reapeatedBooks = new SchoolBook[0]; + for(int i = 0; i < schoolBooks.length; i++){ + if (schoolBooks[i].getName().equals(name)){ + reapeatedBooks = Arrays.copyOf(reapeatedBooks, reapeatedBooks.length + 1); + reapeatedBooks[reapeatedBooks.length - 1] = schoolBooks[i]; + } + //cnt++; + } + return reapeatedBooks; + } + + @Override + public boolean removeByName(String name) { + boolean isBookFound = false; + for(int i = 0; i < schoolBooks.length; i++){ + if (schoolBooks[i].getName().equals(name)) { + isBookFound = true; + System.arraycopy(schoolBooks, i + 1, schoolBooks, i, + schoolBooks.length - i - 1); + schoolBooks = Arrays.copyOf(schoolBooks, schoolBooks.length - 1); + if (schoolBooks.length == 1){ + System.arraycopy(schoolBooks, 1, schoolBooks, 0, + schoolBooks.length - 0 - 1); + schoolBooks = Arrays.copyOf(schoolBooks, schoolBooks.length - 1); + } + } + } + return isBookFound; + } + + @Override + public int count() { + return schoolBooks.length; + } +} diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleAuthorService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleAuthorService.java new file mode 100644 index 00000000..92ac00e4 --- /dev/null +++ b/src/main/java/com/epam/izh/rd/online/service/SimpleAuthorService.java @@ -0,0 +1,41 @@ +package com.epam.izh.rd.online.service; + +import com.epam.izh.rd.online.entity.Author; +import com.epam.izh.rd.online.repository.AuthorRepository; +import com.epam.izh.rd.online.repository.SimpleAuthorRepository; + +public class SimpleAuthorService implements AuthorService{ + private AuthorRepository authorRepository; + private SimpleAuthorRepository simpleAuthorRepository = new SimpleAuthorRepository(); + + public SimpleAuthorService() { + } + + public SimpleAuthorService(AuthorRepository authorRepository) { + this.authorRepository = authorRepository; + } + + /** + * Метод должен сохранять автора. + * По факту, он просто обращается к репозиторию с авторами и вызывает аналогичный метод, псоле чего возвращает результат. + */ + @Override + public boolean save(Author author) { + return simpleAuthorRepository.save(author); + } + + @Override + public Author findByFullName(String name, String lastname) { + return simpleAuthorRepository.findByFullName(name, lastname); + } + + @Override + public boolean remove(Author author) { + return simpleAuthorRepository.remove(author); + } + + @Override + public int count() { + return simpleAuthorRepository.count(); + } +} diff --git a/src/main/java/com/epam/izh/rd/online/service/SimpleSchoolBookService.java b/src/main/java/com/epam/izh/rd/online/service/SimpleSchoolBookService.java new file mode 100644 index 00000000..e1f0d64b --- /dev/null +++ b/src/main/java/com/epam/izh/rd/online/service/SimpleSchoolBookService.java @@ -0,0 +1,70 @@ +package com.epam.izh.rd.online.service; + +import com.epam.izh.rd.online.entity.Author; +import com.epam.izh.rd.online.entity.Book; +import com.epam.izh.rd.online.entity.SchoolBook; +import com.epam.izh.rd.online.repository.BookRepository; +import com.epam.izh.rd.online.repository.SimpleAuthorRepository; +import com.epam.izh.rd.online.repository.SimpleSchoolBookRepository; + +public class SimpleSchoolBookService implements BookService { + BookRepository schoolBookBookRepository = new SimpleSchoolBookRepository(); + AuthorService authorService = new SimpleAuthorService(); + + public SimpleSchoolBookService() { + } + + public SimpleSchoolBookService(BookRepository schoolBookBookRepository, AuthorService authorService) { + this.schoolBookBookRepository = schoolBookBookRepository; + this.authorService = authorService; + } + + /** + * Метод должен сохранять книгу. + * + * Перед сохранением книги нужно проверить, сохранен ли такой автор в базе авторов. + * То есть вы должен взять имя и фамилию автора из книги и обратиться к сервису авторов и узнать о наличии такого автора. + * Напомню, что мы считаем, что двух авторов с одинаковыми именем и фамилией быть не может. + * + * Если такой автор сущесвует (сохранен) - значит можно сохранять и книгу. + * Если же такого автора в базе нет, значит книгу сохранять нельзя. + * + * Соответственно, если книга была успешно сохранена - метод возвращает true, если же книга не была сохранена - метод возвращает false. + */ + @Override + public boolean save(SchoolBook book) { + if (authorService.findByFullName(book.getAuthorName(),book.getAuthorLastName()) == null){ + return false; + } + schoolBookBookRepository.save(book); + return true; + } + + @Override + public SchoolBook[] findByName(String name) { + return schoolBookBookRepository.findByName(name); + } + + @Override + public int getNumberOfBooksByName(String name) { + return findByName(name).length; + } + + @Override + public boolean removeByName(String name) { + return schoolBookBookRepository.removeByName(name); + } + + @Override + public int count() { + return schoolBookBookRepository.count(); + } + + @Override + public Author findAuthorByBookName(String name) { + if (schoolBookBookRepository.findByName(name) == null){ + return null; + } + return authorService.findByFullName(schoolBookBookRepository.findByName(name)[0].getAuthorName(), schoolBookBookRepository.findByName(name)[0].getAuthorLastName()); + } +}