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//当前的类是一个持久化类,是Category这个类。他映射了一个表category。所对应的 数据库是users
//这句:@Table(name = "category", catalog = "users") 可以省略
@Entity
@Table(name = "category", catalog = "users")
public class Category implements java.io.Serializable {
private static final long serialVersionUID = 3240281547213597385L;
private Integer id;
private String name;
private String description;
private Set<Product> products = new HashSet<Product>(0);
public Category() {
}
public Category(String name, String description, Set<Product> products) {
this.name = name;
this.description = description;
this.products = products;
}
// 主键 :@Id 主键生成方式:strategy = "increment"
//映射表中id这个字段,不能为空,并且是唯一的
@GenericGenerator(name = "generator", strategy = "increment")
@Id
@GeneratedValue(generator = "generator")
@Column(name = "id", unique = true, nullable = false)
public Integer getId() {
return this.id;
}
public void setId(Integer id) {
this.id = id;
}
//映射表中name这个字段 ,长度是500
@Column(name = "name", length = 500)
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
//映射表中description这个字段 ,长度是500
@Column(name = "description", length = 500)
public String getDescription() {
return this.description;
}