Java tutorial
/* * The MIT License * * Copyright 2016 Dmitry Noranovich <javaeeeee at gmail dot com>. * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ package com.javaeeeee.entities; import java.io.Serializable; import java.util.HashSet; import java.util.Set; import javax.persistence.Basic; import javax.persistence.CascadeType; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; import javax.persistence.OneToMany; import javax.persistence.Table; import javax.validation.constraints.NotNull; import javax.validation.constraints.Size; import org.springframework.util.Assert; /** * A class to store application user data. * * @author Dmitry Noranovich <javaeeeee at gmail dot com> */ @Entity @Table(name = "users") public class User implements Serializable { private static final long serialVersionUID = 1L; /** * The auto-generated id of a user. */ @Id @GeneratedValue(strategy = GenerationType.IDENTITY) @Basic(optional = false) @Column(nullable = false) private Integer id; /** * A username to login to the application. */ @Basic(optional = false) @NotNull @Size(min = 1, max = 255) @Column(nullable = false, length = 255, unique = true) private String username; /** * A password to login to the application. */ @Basic(optional = false) @NotNull @Size(min = 1, max = 255) @Column(nullable = false, length = 255) private String password; /** * Bookmark list of a user. */ @OneToMany(mappedBy = "user", cascade = CascadeType.ALL) private Set<Bookmark> bookmarks = new HashSet<>(); /** * A no-argument constructor. */ public User() { } /** * A constructor used to create users. * * @param username * @param password */ public User(String username, String password) { Assert.hasLength(username); Assert.hasLength(password); this.username = username; this.password = password; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getUsername() { return username; } public void setUsername(String username) { Assert.hasLength(username); this.username = username; } public String getPassword() { return password; } public void setPassword(String password) { Assert.hasLength(password); this.password = password; } public Set<Bookmark> getBookmarks() { return bookmarks; } /** * A method to add bookmarks to user's list. * * @param bookmark a bookmark to add. * @return the added bookmark. */ public Bookmark addBookmark(Bookmark bookmark) { Assert.notNull(bookmark); bookmarks.add(bookmark); bookmark.setUser(this); return bookmark; } @Override public int hashCode() { int hash = 0; hash += (id != null ? id.hashCode() : 0); return hash; } @Override public boolean equals(Object object) { // TODO: Warning - this method won't work in the case the id fields are not set if (!(object instanceof User)) { return false; } User other = (User) object; if ((this.id == null && other.id != null) || (this.id != null && !this.id.equals(other.id))) { return false; } return true; } @Override public String toString() { return "User{" + "id=" + id + ", username=" + username + ", password=" + password + '}'; } }