Step 3: Implement

Expanded Pet Store (v3)/implementation/springboot-petstore-demo/.openapi-generator-ignore

@@ -21,3 +21,7 @@
 #docs/*.md
 # Then explicitly reverse the ignore rule for a single file:
 #!docs/README.md
+
+
+# We customize Java version and may add dependencies
+pom.xml

Expanded Pet Store (v3)/implementation/springboot-petstore-demo/pom.xml

@@ -6,7 +6,7 @@
     <name>petstore-demo</name>
     <version>1.0.0</version>
     <properties>
-        <java.version>1.7</java.version>
+        <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
         <springfox-version>2.8.0</springfox-version>

Expanded Pet Store (v3)/implementation/springboot-petstore-demo/src/main/java/com/reprezen/demo/springboot/api/PetsApiDelegateImpl.java

@@ -0,0 +1,57 @@
+package com.reprezen.demo.springboot.api;
+
+import java.util.List;
+import java.util.Map;
+import java.util.stream.Collectors;
+
+import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
+import org.springframework.stereotype.Service;
+
+import com.google.common.collect.Maps;
+import com.reprezen.demo.springboot.api.PetsApiDelegate;
+import com.reprezen.demo.springboot.model.NewPet;
+import com.reprezen.demo.springboot.model.Pet;
+
+@Service
+public class PetsApiDelegateImpl implements PetsApiDelegate {
+
+	private final Map<Long, Pet> pets = Maps.newHashMap();
+	private long nextId = 0l;
+
+	@Override
+	public ResponseEntity<Pet> addPet(NewPet newPet) {
+		Pet petToAdd = new Pet();
+		petToAdd.id(nextId++).name(newPet.getName()).tag(newPet.getTag());
+		pets.put(petToAdd.getId(), petToAdd);
+		return new ResponseEntity<>(petToAdd, HttpStatus.CREATED);
+	}
+
+	@Override
+	public ResponseEntity<Void> deletePet(Long id) {
+		if (!pets.containsKey(id)) {
+			return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+		}
+		pets.remove(id);
+		return new ResponseEntity<>(HttpStatus.NO_CONTENT);
+	}
+
+	@Override
+	public ResponseEntity<Pet> findPetById(Long id) {
+		if (!pets.containsKey(id)) {
+			return new ResponseEntity<>(HttpStatus.NOT_FOUND);
+		}
+		return new ResponseEntity<>(pets.get(id), HttpStatus.ACCEPTED);
+	}
+
+	@Override
+	public ResponseEntity<List<Pet>> findPets(List<String> tags, Integer limitObject) {
+		int limit = limitObject == null ? Integer.MAX_VALUE : limitObject;
+		List<Pet> filteredPets = pets.values().stream()//
+				.filter(pet -> (tags == null || tags.isEmpty()) ? true : tags.contains(pet.getTag()))//
+				.limit(limit)//
+				.collect(Collectors.toList());
+		return new ResponseEntity<>(filteredPets, HttpStatus.ACCEPTED);
+	}
+
+}

Expanded Pet Store (v3)/pom.xml

@@ -29,6 +29,11 @@
             <artifactId>com.modelsolv.reprezen.generators.standard</artifactId>
             <version>${reprezen.version}</version>
         </dependency>
+        <dependency>
+        	<groupId>org.openapitools</groupId>
+        	<artifactId>openapi-generator</artifactId>
+        	<version>3.2.3</version>
+        </dependency>
     </dependencies>
     <repositories>
 		<repository>