productservice.java

基于mysql5.0完成的shopping网站后台

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package com.shopping.model;

import com.shopping.dao.ProductDAO;
import com.shopping.dao.ProductDAOFactory;
import java.util.List;

/**
 *
 * @author ruirui
 */
public class ProductService {

    private ProductDAO dao = null;
    private static ProductService service = null;

    private ProductService() {
        this.dao = ProductDAOFactory.getDao();
    }

    //
    public static ProductService getInstance() {
        if (service == null) {
            service = new ProductService();
        }
        return service;
    }

    //����һ��product
    public boolean save(Product p) {
        return dao.addProduct(p);
    }

    public List<Product> getProducts() {
        return dao.getProducts();
    }

    /**
     * 
     * @param list
     * @param pageNo
     * @param pageSize
     * @return
     */
    public int getProducts(List<Product> list, int pageNo, int pageSize) {
        return dao.getProducts(list, pageNo, pageSize);
    }

    public List<Product> searchProduts(int categoryId, String keyword) {
        return dao.searchProduts(categoryId, keyword);
    }

    public List<Product> searchProduts(int categoryId,
            String keyword,
            double lowNormalPrice,
            double highNormalPrice) {
        return dao.searchProduts(categoryId, keyword, lowNormalPrice, highNormalPrice);
    }
    
    public Product loadById(int id){
        return dao.loadById(id);
    }
    
}