Add API to filter pets by type and name with lightweight response end…

src/main/java/org/springframework/samples/petclinic/owner/PetResponse.java

@@ -0,0 +1,19 @@
+package org.springframework.samples.petclinic.owner;
+
+public class PetResponse {
+	private String name;
+	private String type;
+
+	public PetResponse(String name, String type) {
+		this.name = name;
+		this.type = type;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public String getType() {
+		return type;
+	}
+}

src/main/java/org/springframework/samples/petclinic/owner/PetRestController.java

@@ -0,0 +1,75 @@
+package org.springframework.samples.petclinic.owner;
+
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import java.util.ArrayList;
+import java.util.List;
+
+@RestController
+@RequestMapping("/api")
+
+public class PetRestController {
+
+	private final OwnerRepository ownerRepository;
+
+	public PetRestController(OwnerRepository ownerRepository) {
+		this.ownerRepository = ownerRepository;
+	}
+
+	@GetMapping("/pets")
+	public List<Pet> getPets(
+		@RequestParam(required = false) String type,
+		@RequestParam(required = false) String name) {
+
+		List<Pet> result = new ArrayList<>();
+
+
+		List<Owner> owners = ownerRepository.findAll();
+
+		for (Owner owner : owners) {
+			for (Pet pet : owner.getPets()) {
+
+				boolean matchesType = (type == null || pet.getType().getName().equalsIgnoreCase(type));
+				boolean matchesName = (name == null || pet.getName().equalsIgnoreCase(name));
+
+				if (matchesType && matchesName) {
+					result.add(pet);
+				}
+			}
+		}
+
+		return result;
+	}
+
+	// Returns only pet name and type with optional filtering by type and name
+	@GetMapping("/pets/names")
+	public List<PetResponse> getPetNames(
+		@RequestParam(required = false) String type,
+		@RequestParam(required = false) String name) {
+
+		List<PetResponse> result = new ArrayList<>();
+
+		List<Owner> owners = ownerRepository.findAll();
+
+		for (Owner owner : owners) {
+			for (Pet pet : owner.getPets()) {
+
+				boolean matchesType = (type == null || pet.getType().getName().equalsIgnoreCase(type));
+				boolean matchesName = (name == null || pet.getName().equalsIgnoreCase(name));
+
+				if (matchesType && matchesName) {
+					result.add(new PetResponse(
+						pet.getName(),
+						pet.getType().getName()
+					));
+				}
+			}
+		}
+
+		return result;
+	}
+}
+