Reflect grouping in directory structure

framework/order/src/appTest/java/com/example/order/OrderApplicationAotTests.java

@@ -0,0 +1,22 @@
+package com.example.order;
+
+import java.time.Duration;
+
+import org.awaitility.Awaitility;
+import org.junit.jupiter.api.Test;
+
+import org.springframework.aot.smoketest.support.assertj.AssertableOutput;
+import org.springframework.aot.smoketest.support.junit.ApplicationTest;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+@ApplicationTest
+class OrderApplicationAotTests {
+
+	@Test
+	void expectedOrderIsLogged(AssertableOutput output) {
+		Awaitility.await().atMost(Duration.ofSeconds(10)).untilAsserted(
+				() -> assertThat(output).hasSingleLineContaining("Items: priority50, -20, -10, 10, none"));
+	}
+
+}

framework/order/src/main/java/com/example/order/Item.java

@@ -0,0 +1,8 @@
+package com.example.order;
+
+@FunctionalInterface
+public interface Item {
+
+	String describe();
+
+}

framework/order/src/main/java/com/example/order/Item10.java

@@ -0,0 +1,15 @@
+package com.example.order;
+
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+
+@Component
+@Order(10)
+class Item10 implements Item {
+
+	@Override
+	public String describe() {
+		return "10";
+	}
+
+}

framework/order/src/main/java/com/example/order/ItemMinus20.java

@@ -0,0 +1,15 @@
+package com.example.order;
+
+import org.springframework.core.annotation.Order;
+import org.springframework.stereotype.Component;
+
+@Component
+@Order(-20)
+class ItemMinus20 implements Item {
+
+	@Override
+	public String describe() {
+		return "-20";
+	}
+
+}

framework/order/src/main/java/com/example/order/OrderApplication.java

@@ -0,0 +1,32 @@
+package com.example.order;
+
+import java.util.stream.Collectors;
+
+import org.apache.commons.logging.Log;
+import org.apache.commons.logging.LogFactory;
+
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.boot.ApplicationRunner;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class OrderApplication {
+
+	private static final Log logger = LogFactory.getLog(OrderApplication.class);
+
+	public static void main(String[] args) throws InterruptedException {
+		SpringApplication.run(OrderApplication.class, args);
+		Thread.currentThread().join(); // To be able to measure memory consumption
+	}
+
+	@Bean
+	public ApplicationRunner run(ObjectProvider<Item> items) {
+		return (args) -> {
+			String itemsDescription = items.orderedStream().map(Item::describe).collect(Collectors.joining(", "));
+			logger.info("Items: " + itemsDescription);
+		};
+	}
+
+}

framework/order/src/main/java/com/example/order/OrderConfiguration.java

@@ -0,0 +1,26 @@
+package com.example.order;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.core.annotation.Order;
+
+@Configuration(proxyBeanMethods = false)
+class OrderConfiguration {
+
+	@Bean
+	Item unorderedItem() {
+		return () -> "none";
+	}
+
+	@Bean
+	PriorityOrderedItem priorityItem50() {
+		return new PriorityOrderedItem(50);
+	}
+
+	@Bean
+	@Order(-10)
+	Item itemMinus10() {
+		return () -> "-10";
+	}
+
+}

framework/order/src/main/java/com/example/order/PriorityOrderedItem.java

@@ -0,0 +1,23 @@
+package com.example.order;
+
+import org.springframework.core.PriorityOrdered;
+
+class PriorityOrderedItem implements Item, PriorityOrdered {
+
+	private final int order;
+
+	public PriorityOrderedItem(int order) {
+		this.order = order;
+	}
+
+	@Override
+	public String describe() {
+		return "priority" + this.order;
+	}
+
+	@Override
+	public int getOrder() {
+		return this.order;
+	}
+
+}