/**
* Returns the amount of money that the customer with the given customer ID has available for
* making purchases.
*
* @param customerId the customer ID
* @return the customer's credit amount
*/
@Transactional(readOnly = true)
public double getCustomerCredit(String customerId) {
Customer customer = storeDAO.getCustomer(customerId);
return customer.getCredit();
}
/**
* Sets the amount of money that the customer with the given customer ID has available for making
* purchases.
*
* @param customerId the customer ID
* @param credit the new customer credit amount
*/
@Transactional
public void setCustomerCredit(String customerId, double credit) {
Customer customer = new Customer(customerId, credit);
storeDAO.save(customer);
}
/**
* Returns the price of the product with the given product ID.
*
* @param productId the product ID
* @return the product's price
*/
@Transactional(readOnly = true)
public double getPrice(String productId) {
Product product = storeDAO.getProduct(productId);
return product.getPrice();
}
/**
* Returns the number of items in stock of the product with the given product ID.
*
* @param productId the product ID
* @return number of items
*/
@Transactional(readOnly = true)
public long getInventory(String productId) {
Product product = storeDAO.getProduct(productId);
return product.getInventory();
}
/**
* Sets the inventory and price for the product with the given product ID. Any previous inventory
* and price values for the product are replaced.
*
* @param productId the product ID
* @param price the price of the product
* @param inventory the number of items in stock
*/
@Transactional
public void stock(String productId, double price, long inventory) {
Product product = new Product(productId, price, inventory);
storeDAO.save(product);
}
/**
* Returns a list ids of products out of stock
*
* @return list of product ids
*/
@Transactional(readOnly = true)
public List<String> getOutOfStock() {
return storeDAO.getOutOfStockProductIds();
}