product.java

Java EE 5 许多新功能都包含经过修补的 EJB 架构

/*
 * Copyright 2006 Borys Burnayev
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.rdacorp.petstore.domain;

import java.util.ArrayList;
import java.util.Collection;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToMany;
import javax.persistence.OneToMany;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;

/**
 * @author Borys Burnayev
 */
@Entity
@Table(name = "product")
@SequenceGenerator(name = "ProductSeq", sequenceName = "sq_product")
public class Product {

   private Integer productId;

   private String code;

   private String name;

   private String description;

   private String imagePath;

   private Collection<Category> categories;

   private Collection<Item> items;

   public Product(String code, String name, String description, String imagePath) {
      this();
      this.code = code;
      this.name = name;
      this.description = description;
      this.imagePath = imagePath;
   }

   public Product() {
      categories = new ArrayList<Category>(1);
      items = new ArrayList<Item>(1);
   }

   @Id
   @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "ProductSeq")
   @Column(name = "product_sysid")
   public Integer getProductId() {
      return this.productId;
   }

   public void setProductId(Integer productId) {
      this.productId = productId;
   }

   @Column(name = "product_abbr")
   public String getCode() {
      return this.code;
   }

   public void setCode(String code) {
      this.code = code;
   }

   @Column(name = "product_nm")
   public String getName() {
      return this.name;
   }

   public void setName(String name) {
      this.name = name;
   }

   @Column(name = "product_desc")
   public String getDescription() {
      return this.description;
   }

   public void setDescription(String description) {
      this.description = description;
   }

   @Column(name = "image_path")
   public String getImagePath() {
      return this.imagePath;
   }

   public void setImagePath(String imagePath) {
      this.imagePath = imagePath;
   }

   @ManyToMany(mappedBy = "products", targetEntity = Category.class)
   public Collection getCategories() {
      return this.categories;
   }

   public void setCategories(Collection<Category> categories) {
      this.categories = categories;
   }

   @OneToMany(fetch = FetchType.LAZY)
   @JoinColumn(name = "product_sysid", referencedColumnName = "product_sysid")
   public Collection<Item> getItems() {
      return this.items;
   }

   public void setItems(Collection<Item> items) {
      this.items = items;
   }

   public String toString() {
      String id = productId != null ? productId.toString() : "<no ID>";
      return "Product " + id + ":\nCode: " + code + "\nDescription: " + description + "\nName: " + name
               + "\nImage Path: " + imagePath + "\n";
   }

   public boolean equals(Object object) {
      if (!(object instanceof Product))
         return false;
      Product product = (Product) object;
      return code.equals(product.getCode());
   }

   public int hashCode() {
      return code.hashCode();
   }
}