HTTP PATCH #67 and Assignment springframeworkguru#9

Author: rmisteli

src/main/java/guru/springframework/spring6restmvc/controller/BeerController.java

@@ -20,6 +20,13 @@ public class BeerController {
 
     private final BeerService beerService;
 
+    @PatchMapping("{beerId}")
+    public ResponseEntity updateBeer(@PathVariable UUID beerId, @RequestBody Beer beer) {
+        beerService.patchBeerById(beerId, beer);
+
+        return new ResponseEntity(HttpStatus.NO_CONTENT);
+    }
+
     @DeleteMapping("{beerId}")
     public ResponseEntity deleteBeer(@PathVariable("beerId") UUID beerId) {
         beerService.deleteBeerById(beerId);

src/main/java/guru/springframework/spring6restmvc/controller/CustomerController.java

@@ -1,6 +1,5 @@
 package guru.springframework.spring6restmvc.controller;
 
-import guru.springframework.spring6restmvc.model.Beer;
 import guru.springframework.spring6restmvc.model.Customer;
 import guru.springframework.spring6restmvc.service.CustomerService;
 import lombok.AllArgsConstructor;
@@ -21,6 +20,13 @@ public class CustomerController {
 
     private final CustomerService customerService;
 
+    @PatchMapping("{customerId}")
+    public ResponseEntity updateCustomer(@PathVariable("customerId") UUID customerId, @RequestBody Customer customer) {
+        customerService.patchCustomerById(customerId, customer);
+
+        return new ResponseEntity(HttpStatus.NO_CONTENT);
+    }
+
     @DeleteMapping("{customerId}")
     public ResponseEntity deleteCustomer(@PathVariable("customerId") UUID customerId) {
         customerService.deleteCustomerById(customerId);

src/main/java/guru/springframework/spring6restmvc/service/BeerService.java

@@ -15,4 +15,6 @@ public interface BeerService {
     void updateBeerById(UUID beerId, Beer beer);
 
     void deleteBeerById(UUID beerId);
+
+    void patchBeerById(UUID beerId, Beer beer);
 }

src/main/java/guru/springframework/spring6restmvc/service/BeerServiceImpl.java

@@ -4,6 +4,7 @@
 import guru.springframework.spring6restmvc.model.BeerStyle;
 import lombok.extern.slf4j.Slf4j;
 import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
 
 import java.math.BigDecimal;
 import java.time.LocalDateTime;
@@ -107,4 +108,29 @@ public void updateBeerById(UUID beerId, Beer beer) {
     public void deleteBeerById(UUID beerId) {
         beerMap.remove(beerId);
     }
+
+    @Override
+    public void patchBeerById(UUID beerId, Beer beer) {
+        Beer existingBeer = beerMap.get(beerId);
+
+        if(StringUtils.hasText(beer.getBeerName())) {
+            existingBeer.setBeerName(beer.getBeerName());
+        }
+
+        if(beer.getBeerStyle() != null) {
+            existingBeer.setBeerStyle(beer.getBeerStyle());
+        }
+
+        if(beer.getPrice() != null) {
+            existingBeer.setPrice(beer.getPrice());
+        }
+
+        if(beer.getQuantityOnHand() != null) {
+            existingBeer.setQuantityOnHand(beer.getQuantityOnHand());
+        }
+
+        if(StringUtils.hasText(beer.getUpc())) {
+            existingBeer.setUpc(beer.getUpc());
+        }
+    }
 }

src/main/java/guru/springframework/spring6restmvc/service/CustomerService.java

@@ -13,4 +13,6 @@ public interface CustomerService {
     void updateCustomerById(UUID customerId, Customer customer);
 
     void deleteCustomerById(UUID customerId);
+
+    void patchCustomerById(UUID customerId, Customer customer);
 }

src/main/java/guru/springframework/spring6restmvc/service/CustomerServiceImpl.java

@@ -2,6 +2,7 @@
 
 import guru.springframework.spring6restmvc.model.Customer;
 import org.springframework.stereotype.Service;
+import org.springframework.util.StringUtils;
 
 import java.time.LocalDateTime;
 import java.util.*;
@@ -81,4 +82,14 @@ public void updateCustomerById(UUID customerId, Customer customer) {
     public void deleteCustomerById(UUID customerId) {
         customerMap.remove(customerId);
     }
+
+    @Override
+    public void patchCustomerById(UUID customerId, Customer customer) {
+        Customer existingCustomer = customerMap.get(customerId);
+
+        if(StringUtils.hasText(customer.getName())) {
+            existingCustomer.setName(customer.getName());
+        }
+
+    }
 }