Fixed the function names relating to Id, to correctly call the JPA cr…

…iteria API

src/main/java/sg/com/smartinventory/repositories/CustomerRepository.java

@@ -11,7 +11,7 @@
 // We can also create custom queries using the JPA criteria API by simply creating a method with a certain naming convention specified by the query creation mechanism.
 public interface CustomerRepository extends JpaRepository<Customer, Long> {
     // Custom query to find all customers with a certain ID.
-    List<Customer> findByID(long id);
+    List<Customer> findById(long id);
 
     // Custom query to find all customers with a certain first name.
     List<Customer> findByFirstName(String firstName);
@@ -20,7 +20,7 @@ public interface CustomerRepository extends JpaRepository<Customer, Long> {
     List<Customer> findByLastName(String lastName);
 
     // Custom query to find all customers with a certain first name and last name.
-    List<Customer> findByFirstNameAndLastNameAsc(String firstName, String lastName);
+    List<Customer> findByFirstNameAndLastName(String firstName, String lastName);
 
     // Custom query to find all customers with a certain country.
     List<Customer> findByCountry(String country);

src/main/java/sg/com/smartinventory/repositories/ProductRepository.java

@@ -11,7 +11,7 @@
 // We can also create custom queries using the JPA criteria API by simply creating a method with a certain naming convention specified by the query creation mechanism.
 public interface ProductRepository extends JpaRepository<Product, Long> {
     // Custom query to find all products with a certain ID.
-    List<Product> findByID(long id);
+    List<Product> findById(long id);
 
     // Custom query to find all products with a certain category.
     List<Product> findByCategory(String category);
@@ -26,5 +26,5 @@ public interface ProductRepository extends JpaRepository<Product, Long> {
     List<Product> findByPrice(double price);
 
     // Custom query to find all products with a certain stock quantity.
-    List<Product> findByQuantity(int stockQuantity);
+    List<Product> findByStockQuantity(int stockQuantity);
 }

src/main/java/sg/com/smartinventory/repositories/ReviewRepository.java

@@ -11,7 +11,7 @@
 // We can also create custom queries using the JPA criteria API by simply creating a method with a certain naming convention specified by the query creation mechanism.
 public interface ReviewRepository extends JpaRepository<Review, Long> {
     // Custom query to find all reviews with a certain ID.
-    List<Review> findByID(long id);
+    List<Review> findById(long id);
 
     // Custom query to find all reviews with a certain category.
     List<Review> findByCategory(String category);
@@ -23,11 +23,11 @@ public interface ReviewRepository extends JpaRepository<Review, Long> {
     List<Review> findByRating(int rating);
 
     // Custom query to find all reviews with a certain customer ID.
-    List<Review> findByCustomerID(long customerId);
+    List<Review> findByCustomerId(long customerId);
 
     // Custom query to find all reviews with a certain product ID.
-    List<Review> findByProductID(long productId);
+    List<Review> findByProductId(long productId);
 
     // Custom query to find all reviews with a certain customer ID and product ID.
-    List<Review> findByCustomerIDAndProductID(long customerId, long productId);
+    List<Review> findByCustomerIdAndProductId(long customerId, long productId);
 }