feat: created Book entity (2fd6dd55) · Commits · Matej Bumbera / Bookstore

.gitignore

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		package cz.muni.bookstore.book;

		import cz.muni.bookstore.book.enums.Category;
		import jakarta.persistence.*;

		import java.math.BigDecimal;

		/**
		* Book in a bookstore
		*/
		@Entity
		@Table(name = "book")
		public class Book {

		/**
		* Unique identifier for a book
		*/
		@Id
		@GeneratedValue(strategy = GenerationType.IDENTITY)
		private Long id;

		/**
		* Title of the book
		*/
		private String title;

		/**
		* Author of the book
		*/
		private String author;

		/**
		* Price of the book
		*/
		private BigDecimal price;

		/**
		* Category of the book
		*/
		private Category category;


		public void setId(Long id) {
		this.id = id;
		}

		public Long getId() {
		return id;
		}

		public void setTitle(String title) {
		this.title = title;
		}

		public String getTitle() {
		return title;
		}

		public void setAuthor(String author) {
		this.author = author;
		}

		public String getAuthor() {
		return author;
		}

		public void setPrice(BigDecimal price) {
		this.price = price;
		}

		public BigDecimal getPrice() {
		return price;
		}

		public void setCategory(Category category) {
		this.category = category;
		}

		public Category getCategory() {
		return category;
		}

		@Override
		public final boolean equals(Object o) {
		if (!(o instanceof Book book)) return false;

		return id.equals(book.id);
		}

		@Override
		public int hashCode() {
		return id.hashCode();
		}
		}

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		package cz.muni.bookstore.book.enums;

		public enum Category {
		FANTASY, SCIFI, ROMANCE, ADVENTURE, HISTORY, POLITICS, SCIENCE, PSYCHOLOGY, TRAVEL, EDUCATION
		}

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		package cz.muni.bookstore.book.enums;

		import jakarta.persistence.*;

		import java.util.stream.Stream;

		@Converter(autoApply = true)
		public class CategoryConverter implements AttributeConverter<Category, String> {
		@Override
		public String convertToDatabaseColumn(Category category) {
		if (category == null) {
		return null;
		}
		return category.name();
		}

		@Override
		public Category convertToEntityAttribute(String code) {
		if (code == null) {
		return null;
		}

		return Stream.of(Category.values())
		.filter(c -> c.name().equals(code))
		.findFirst()
		.orElseThrow(IllegalArgumentException::new);
		}
		}