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rofrrofr
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‎.gitignore

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target/
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.classpath
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.settings/
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.project

‎pom.xml

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<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<groupId>kurs.spring</groupId>
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<artifactId>core</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<dependencies>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>5.1.1.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-test</artifactId>
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<version>5.1.1.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>org.aspectj</groupId>
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<artifactId>aspectjrt</artifactId>
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<version>1.6.11</version>
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</dependency>
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<dependency>
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<groupId>org.aspectj</groupId>
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<artifactId>aspectjweaver</artifactId>
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<version>1.6.11</version>
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</dependency>
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</dependencies>
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</project>

‎src/main/java/aop/AopApplication.java

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package aop;
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import org.springframework.beans.factory.config.BeanDefinition;
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import org.springframework.context.annotation.AnnotationConfigApplicationContext;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.EnableAspectJAutoProxy;
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@ComponentScan
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@EnableAspectJAutoProxy
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public class AopApplication {
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public static void main(String[] args) throws Exception {
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AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(AopApplication.class);
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Greeter greeter = ctx.getBean(Greeter.class);
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System.out.println(greeter.getClass());
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greeter.sayHello();
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for (String beanName : ctx.getBeanDefinitionNames()) {
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System.out.println(beanName);
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BeanDefinition bd = ctx.getBeanDefinition(beanName);
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}
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}
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}

‎src/main/java/aop/Greeter.java

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package aop;
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import org.springframework.stereotype.Component;
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@Component
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public class Greeter {
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public void sayHello() throws InterruptedException {
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System.out.print("Wait for it...");
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Thread.sleep(2000);
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System.out.println("Hello!");
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}
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}

‎src/main/java/aop/Logger.java

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package aop;
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import org.aopalliance.intercept.Joinpoint;
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import org.aspectj.lang.ProceedingJoinPoint;
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import org.aspectj.lang.annotation.Around;
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import org.aspectj.lang.annotation.Aspect;
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import org.springframework.stereotype.Component;
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@Component
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@Aspect
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public class Logger {
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@Around("execution(* *.*(..))")
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public Object log(ProceedingJoinPoint joinPoint) throws Throwable {
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String methodName = joinPoint.getSignature().getName();
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System.out.println("Intercepting call to " + methodName);
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long start = System.currentTimeMillis();
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Object result = joinPoint.proceed();
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long duration = System.currentTimeMillis() - start;
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System.out.println("Execution time ms: " + duration);
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return result;
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}
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}

‎src/main/java/ehandel/AppConfig.java

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package ehandel;
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import org.springframework.context.ApplicationContext;
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public class AppConfig {
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public static void main(String[] args) {
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System.out.println("--- Running AppConfig.main() ---");
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//TODO: Create and initialize an ApplicationContext based on annotations
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ApplicationContext ctx = null;
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OrderProcessingDemo.runDemo(ctx);
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}
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}

‎src/main/java/ehandel/FakeInventoryManager.java

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package ehandel;
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import java.util.HashMap;
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import java.util.Map;
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public class FakeInventoryManager implements InventoryManager {
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Map<String,Integer> inventory;
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public FakeInventoryManager() {
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this.inventory = new HashMap<String, Integer>();
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}
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public synchronized int getInventoryLevel(String product) {
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return inventory.getOrDefault(product, 0);
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}
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public synchronized void adjustInventoryLevel(String product, int deltaLevel) {
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inventory.putIfAbsent(product, 0);
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int newLevel = inventory.get(product) + deltaLevel;
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inventory.put(product, newLevel);
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System.out.println("Product: " + product + ", level: " + newLevel);
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}
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}

‎src/main/java/ehandel/FakeOrderRepository.java

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package ehandel;
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public class FakeOrderRepository implements OrderRepository {
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public void saveOrder(Order order) {
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System.out.println("------- Saving order -------");
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for(OrderItem item: order.getItems()) {
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System.out.println(item);
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}
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}
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}

‎src/main/java/ehandel/InventoryManager.java

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package ehandel;
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public interface InventoryManager {
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int getInventoryLevel(String productId);
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void adjustInventoryLevel(String product, int deltaLevel);
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}

‎src/main/java/ehandel/JavaConfig.java

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package ehandel;
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import org.springframework.context.ApplicationContext;
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public class JavaConfig {
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public static void main(String[] args) {
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System.out.println("--- Running JavaConfig.main() ---");
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//TODO: Create and initialize a context using Java Configuration
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ApplicationContext ctx = null;
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OrderProcessingDemo.runDemo(ctx);
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}
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}

‎src/main/java/ehandel/Order.java

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package ehandel;
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import java.util.ArrayList;
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import java.util.List;
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public class Order {
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private List<OrderItem> items = new ArrayList<>();
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public List<OrderItem> getItems() {
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return items;
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}
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public void add(String product, int quantity) {
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items.add(new OrderItem(product, quantity));
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}
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}

‎src/main/java/ehandel/OrderItem.java

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package ehandel;
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public class OrderItem {
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private String product;
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private int quantity;
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public OrderItem(String product, int quantity) {
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this.product = product;
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this.quantity = quantity;
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}
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public String getProduct() {
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return product;
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}
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public int getQuantity() {
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return quantity;
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}
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@Override
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public String toString() {
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return "OrderItem [product=" + product + ", quantity=" + quantity + "]";
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}
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}

‎src/main/java/ehandel/OrderProcessingDemo.java

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package ehandel;
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import org.springframework.context.ApplicationContext;
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public class OrderProcessingDemo {
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public static void runDemo(ApplicationContext ctx) {
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InventoryManager inventoryManager = ctx.getBean(InventoryManager.class);
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//Add some items to inventory
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inventoryManager.adjustInventoryLevel("balls", 30);
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inventoryManager.adjustInventoryLevel("racket", 10);
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ShoppingCart cart = new ShoppingCart();
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cart.getItems().add(new OrderItem("balls", 4));
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cart.getItems().add(new OrderItem("racket", 1));
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OrderProcessor processor = ctx.getBean(OrderProcessor.class);
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processor.placeOrder(cart);
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}
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}

‎src/main/java/ehandel/OrderProcessor.java

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package ehandel;
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public class OrderProcessor {
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//TODO: initialize fields using Spring DI
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private InventoryManager inventoryManager;
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private OrderRepository orderRepository;
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public synchronized void placeOrder(ShoppingCart cart) {
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Order order = new Order();
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for(OrderItem item: cart.getItems()) {
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order.add(item.getProduct(), item.getQuantity());
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inventoryManager.adjustInventoryLevel(
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item.getProduct(),
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-item.getQuantity());
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}
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orderRepository.saveOrder(order);
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}
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}

‎src/main/java/ehandel/OrderRepository.java

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package ehandel;
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public interface OrderRepository {
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void saveOrder(Order order);
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}

‎src/main/java/ehandel/ShoppingCart.java

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package ehandel;
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import java.util.ArrayList;
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import java.util.List;
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public class ShoppingCart {
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private List<OrderItem> items = new ArrayList<>();
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public void add(String product, int amount) {
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getItems().add(new OrderItem(product, amount));
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}
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public List<OrderItem> getItems() {
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return items;
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}
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}

‎src/main/java/ehandel/XmlConfig.java

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package ehandel;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.AnnotationConfigApplicationContext;
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import org.springframework.context.support.ClassPathXmlApplicationContext;
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public class XmlConfig {
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public static void main(String[] args) {
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System.out.println("--- Running JavaConfig.main() ---");
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//TODO: Create and initialize a context using xml configuration
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ApplicationContext ctx = null;
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}
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}

‎src/main/java/ehandel/spring.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<beans
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xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd">
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<!-- TODO Declare beans for e-commerce example -->
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</beans>

‎src/test/java/core/OrderProcessorTests.java

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package core;
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import static org.junit.Assert.*;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.test.annotation.DirtiesContext;
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import org.springframework.test.annotation.DirtiesContext.ClassMode;
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import org.springframework.test.context.ContextConfiguration;
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import org.springframework.test.context.junit4.SpringRunner;
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import ehandel.FakeInventoryManager;
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import ehandel.FakeOrderRepository;
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import ehandel.OrderProcessor;
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import ehandel.ShoppingCart;
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public class OrderProcessorTests {
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@Test
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public void orderProcessorAdjustsInventory() {
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//Arrange
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FakeInventoryManager inventoryManager = new FakeInventoryManager();
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FakeOrderRepository or = new FakeOrderRepository();
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//TODO: create an instance based on the DI approach you chose in exercise 1
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OrderProcessor orderProcessor = null;
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inventoryManager.adjustInventoryLevel("balls", 30);
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inventoryManager.adjustInventoryLevel("racket", 10);
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ShoppingCart cart = new ShoppingCart();
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cart.add("balls", 4);
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cart.add("racket", 1);
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//Act
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orderProcessor.placeOrder(cart);
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//Assert
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assertEquals(26, inventoryManager.getInventoryLevel("balls"));
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assertEquals(9, inventoryManager.getInventoryLevel("racket"));
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}
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}

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