✨ 组合模式

datastructure/src/main/java/org/alis/smallcc/designpatterns/structure/composite/Component.java

@@ -0,0 +1,24 @@
+package org.alis.smallcc.designpatterns.structure.composite;
+
+/**
+ * 组件
+ *
+ * @author robin
+ * @date 2022/5/9 17:52
+ */
+public interface Component {
+
+    /**
+     * 炒作
+     */
+    void operation();
+
+
+    /**
+     * 组合器
+     *
+     * @param component 组件
+     */
+    void addComponent(Component component);
+
+}

datastructure/src/main/java/org/alis/smallcc/designpatterns/structure/composite/Composite.java

@@ -0,0 +1,26 @@
+package org.alis.smallcc.designpatterns.structure.composite;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * @author lc
+ * @date 2022/5/9 17:51
+ */
+public class Composite implements Component {
+
+    private final List<Component> COMPONENT_LIST = new ArrayList<>();
+
+    @Override
+    public void operation() {
+        System.out.println("\n" + hashCode() + " 组合器执行:\n");
+        for (Component component : COMPONENT_LIST) {
+            component.operation();
+        }
+    }
+
+    @Override
+    public void addComponent(Component component) {
+        COMPONENT_LIST.add(component);
+    }
+}

datastructure/src/main/java/org/alis/smallcc/designpatterns/structure/composite/LazyComponent.java

@@ -0,0 +1,17 @@
+package org.alis.smallcc.designpatterns.structure.composite;
+
+/**
+ * @author lc
+ * @date 2022/5/9 17:57
+ */
+public class LazyComponent implements Component {
+    @Override
+    public void operation() {
+        System.out.println(hashCode() + "懒惰节点执行");
+    }
+
+    @Override
+    public void addComponent(Component component) {
+        throw new UnsupportedOperationException();
+    }
+}

datastructure/src/main/java/org/alis/smallcc/designpatterns/structure/composite/Main.java

@@ -0,0 +1,32 @@
+package org.alis.smallcc.designpatterns.structure.composite;
+
+import java.util.concurrent.ThreadLocalRandom;
+
+/**
+ * @author lc
+ * @date 2022/5/9 18:00
+ */
+public class Main {
+    public static void main(String[] args) {
+        // 创建一个根
+        Component root = new Composite();
+
+        for (int i = 0; i < 3; i++) {
+            Composite composite = new Composite();
+            // 创建10个懒惰或者勤快节点
+            for (int j = 0; j < 10; j++) {
+                int i1 = ThreadLocalRandom.current().nextInt(0, 10);
+                Component component;
+                if (i1 % 2 == 0) {
+                    component = new WorkComponent();
+                } else {
+                    component = new LazyComponent();
+                }
+                composite.addComponent(component);
+            }
+            root.addComponent(composite);
+        }
+
+        root.operation();
+    }
+}

datastructure/src/main/java/org/alis/smallcc/designpatterns/structure/composite/PackageInfo.java

@@ -0,0 +1,10 @@
+package org.alis.smallcc.designpatterns.structure.composite;
+
+/**
+ * 组合模式
+ *
+ * @author lc
+ * @date 2022/5/9 17:51
+ */
+public class PackageInfo {
+}

datastructure/src/main/java/org/alis/smallcc/designpatterns/structure/composite/WorkComponent.java

@@ -0,0 +1,17 @@
+package org.alis.smallcc.designpatterns.structure.composite;
+
+/**
+ * @author lc
+ * @date 2022/5/9 17:57
+ */
+public class WorkComponent implements Component {
+    @Override
+    public void operation() {
+        System.out.println(hashCode() + "工作节点执行");
+    }
+
+    @Override
+    public void addComponent(Component component) {
+        throw new UnsupportedOperationException();
+    }
+}