SimpleProductManager.java

package com.medratech.spring.mvc.service;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.medratech.spring.mvc.domain.Product;
import com.medratech.spring.mvc.repository.ProductDao;

public class SimpleProductManager implements ProductManager {

	@Autowired
    private ProductDao productDao;

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

    public void increasePrice(int percentage) {
        List<Product> products = productDao.getProductList();
        if (products != null) {
            for (Product product : products) {
                double newPrice = product.getPrice().doubleValue()
                        * (100 + percentage) / 100;
                product.setPrice(newPrice);
                productDao.saveProduct(product);
            }
        }
    }

    public void setProductDao(ProductDao productDao) {
        this.productDao = productDao;
    }
}