public void addProduct(Product product, int quantity) {
InventoryItem inventoryItem = inventoryRepository.findByProduct(product);
if (inventoryItem == null) {
inventoryItem = new InventoryItem(product);
inventoryRepository.update(inventoryItem);
}
inventoryItem.replenish(quantity);
}
@Transactional(readOnly = true)
public boolean isProductAvailable(Product product, int quantity) {
InventoryItem inventoryItem = inventoryRepository.findByProduct(product);
if ((inventoryItem == null) || (inventoryItem.getQuantityOnHand() < quantity)) {
return false;
}
return true;
}
public void removeProduct(Product product, int quantity) {
if (isProductAvailable(product, quantity)) {
InventoryItem inventoryItem = inventoryRepository.findByProduct(product);
inventoryItem.deplete(quantity);
} else {
throw new InventoryException(
"Insufficient inventory to fulfil"
+ " request for "
+ product.getName()
+ " quantity "
+ quantity);
}
}