@Override
public boolean save(final Product... products) {
for (Product p : products) {
if (p == null) {
throw new IllegalArgumentException(
String.format("Input " + "product cannot be null: %s.", p));
}
if (productList.size() == 0) {
p.setId(id++);
productList.add(p);
} else {
for (Product d : productList) {
if (p.getName().equals(d.getName())) {
String errorMessage =
String.format(
"Product with such" + " name already exists: %s. ID - %d",
d.getName(), d.getId());
throw new IllegalArgumentException(errorMessage);
}
}
p.setId(id++);
productList.add(p);
}
LOGGER.info(String.format("*** %s has been saved. ID - %d", p.getName(), p.getId()));
}
return true;
}
@Override
public Set<Product> getAllSortedByName() {
LOGGER.info(String.format("%n*** Getting all products from the list " + "ordered by name ***"));
Set<Product> nameSortedProductList = new TreeSet<Product>(new NameSorterComparator());
nameSortedProductList.addAll(productList);
return nameSortedProductList;
}
@Override
public Product getById(final Integer id) {
if (id == null || id < 1) {
throw new IllegalArgumentException(
"ID cannot be null and should " + "be greater than 0. Your ID: " + id);
}
for (Product p : productList) {
if (p.getId().equals(id)) {
LOGGER.info(
String.format("*** Getting product with ID %d from " + "the list of products ***", id));
return p;
} else {
throw new IllegalArgumentException("There is no product with " + "such ID: " + id);
}
}
return null;
}
@Override
public boolean update(final Product... products) {
for (Product p : products) {
if (p == null) {
throw new IllegalArgumentException("Input product cannot be " + "null. Your product: " + p);
}
for (Product d : productList) {
if (p.getId().equals(d.getId())) {
LOGGER.info(String.format("*** Updating %s ***", p.getName()));
d.setName(p.getName());
d.setDescription(p.getDescription());
d.setPrice(p.getPrice());
}
}
}
return false;
}
@Override
public Product getByName(final String name) {
if (name == null || name.equals("")) {
throw new IllegalArgumentException(
"Input name cannot be null or " + "blank. Your name: " + name);
}
boolean isInList = false;
for (Product p : productList) {
if (p.getName().equals(name)) {
LOGGER.info(String.format("*** Getting %s ***", p.getName()));
return p;
}
}
if (!isInList) {
throw new IllegalArgumentException("There is no product with " + "such name: " + name);
}
return null;
}
@Override
public boolean remove(final Product... products) {
for (Product p : products) {
if (p == null) {
throw new IllegalArgumentException("Input product cannot be " + "null. Your product: " + p);
}
if (productList.contains(p)) {
LOGGER.info(
String.format(
"*** %s has been removed from the " + "list of products ***", p.getName()));
productList.remove(p);
} else {
throw new IllegalArgumentException(
"There is no product with " + "such name: " + p.getName());
}
}
return true;
}
@Override
public Set<Product> getAllSortedById() {
LOGGER.info(String.format("%n*** Getting all products from the list " + "ordered by ID ***"));
return productList;
}
@Override
public boolean removeAll() {
LOGGER.info("*** Removing all products from the list of products ***");
productList.clear();
return true;
}
