Tiny fix for Demo with ID

Author: JohannesRabauer

spring-data-eclipse-store-demo/src/main/java/software/xdev/spring/data/eclipse/store/demo/simple/Customer.java

@@ -1,11 +1,15 @@
 package software.xdev.spring.data.eclipse.store.demo.simple;
 
+import jakarta.persistence.GeneratedValue;
+import jakarta.persistence.GenerationType;
+
 import org.springframework.data.annotation.Id;
 
 
 public class Customer
 {
 	@Id
+	@GeneratedValue(strategy = GenerationType.AUTO)
 	private String id;
 
 	private final String firstName;

spring-data-eclipse-store-demo/src/main/java/software/xdev/spring/data/eclipse/store/demo/simple/Pet.java

@@ -15,8 +15,9 @@ public Pet()
 	{
 	}
 
-	public Pet(final String name, final Integer age)
+	public Pet(final String id, final String name, final Integer age)
 	{
+		this.id = id;
 		this.name = name;
 		this.age = age;
 	}

spring-data-eclipse-store-demo/src/main/java/software/xdev/spring/data/eclipse/store/demo/simple/SimpleDemoApplication.java

@@ -61,7 +61,7 @@ public void run(final String... args)
 		this.customerRepository.findAll().forEach(c -> LOG.info(c.toString()));
 
 		// save a pet
-		this.petRepository.save(new Pet("Peter", 2));
+		this.petRepository.save(new Pet("1", "Peter", 2));
 
 		// fetch all pets
 		LOG.info("Pets found with findAll():");