增加工厂模式（方法工厂）

.idea/workspace.xml

@@ -2,18 +2,8 @@
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   <component name="ChangeListManager">
     <list default="true" id="e43e9168-5945-4f45-b4c2-1b6410d1eef8" name="Changes" comment="增加策略模式案例&#10;Signed-off-by: chenjianqiang &lt;wushanxi@gmail.com&gt;">
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/InterpreterPattern/InterpreterMain.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/InterpreterPattern/po/AndExpression.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/InterpreterPattern/po/Expression.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/InterpreterPattern/po/OrExpression.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/InterpreterPattern/po/TerminalExpression.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/PatternApplication.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/StrategyPattern/Context.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/StrategyPattern/StrategyMain.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/StrategyPattern/po/OperationA.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/StrategyPattern/po/OperationB.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/out/production/patterns/com/chen/StrategyPattern/po/Strategy.class" beforeDir="false" />
-      <change beforePath="$PROJECT_DIR$/src/com/pattern/FactoryPattern/SimpleFactory/package-info.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/com/pattern/FactoryPattern/SimpleFactory/package-info.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/com/pattern/FactoryPattern/FunctionFactory/package-info.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/com/pattern/FactoryPattern/FunctionFactory/package-info.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/src/com/pattern/FactoryPattern/SimpleFactory/materials/SimpleFactoryMain.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/com/pattern/FactoryPattern/SimpleFactory/materials/SimpleFactoryMain.java" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/src/com/pattern/PatternApplication.java" beforeDir="false" afterPath="$PROJECT_DIR$/src/com/pattern/PatternApplication.java" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
@@ -21,12 +11,15 @@
     <option name="HIGHLIGHT_NON_ACTIVE_CHANGELIST" value="false" />
     <option name="LAST_RESOLUTION" value="IGNORE" />
   </component>
+  <component name="CodeInsightWorkspaceSettings">
+    <option name="optimizeImportsOnTheFly" value="true" />
+  </component>
   <component name="FileTemplateManagerImpl">
     <option name="RECENT_TEMPLATES">
       <list>
-        <option value="Interface" />
         <option value="package-info" />
         <option value="Class" />
+        <option value="Interface" />
       </list>
     </option>
   </component>
@@ -100,6 +93,7 @@
   <component name="PropertiesComponent">
     <property name="WebServerToolWindowFactoryState" value="false" />
     <property name="last_opened_file_path" value="$PROJECT_DIR$/src/com/pattern/FactoryPattern/AbstractFactory" />
+    <property name="settings.editor.selected.configurable" value="editor.preferences.import" />
     <property name="vue.rearranger.settings.migration" value="true" />
   </component>
   <component name="RecentsManager">
@@ -111,9 +105,11 @@
       <recent name="E:\chen\patterns\src\com\chen\StrategyPattern" />
     </key>
     <key name="CopyClassDialog.RECENTS_KEY">
+      <recent name="com.pattern.FactoryPattern.FunctionFactory.materials.factory" />
+      <recent name="com.pattern.FactoryPattern.FunctionFactory.materials.po" />
+      <recent name="com.pattern.FactoryPattern.AbstractFactory.materials" />
+      <recent name="com.pattern.FactoryPattern.FunctionFactory" />
       <recent name="com.pattern.FactoryPattern.SimpleFactory" />
-      <recent name="com.chen.StrategyPattern.po" />
-      <recent name="com.company.InterpreterPattern" />
     </key>
   </component>
   <component name="RunManager">
@@ -145,7 +141,7 @@
       <workItem from="1634085227295" duration="1967000" />
       <workItem from="1634087918450" duration="3646000" />
       <workItem from="1634091679401" duration="1323000" />
-      <workItem from="1634093719115" duration="8837000" />
+      <workItem from="1634093719115" duration="10277000" />
     </task>
     <task id="LOCAL-00001" summary="增加策略模式案例&#10;Signed-off-by: chenjianqiang &lt;wushanxi@gmail.com&gt;">
       <created>1634096220780</created>
@@ -175,4 +171,8 @@
     <MESSAGE value="增加策略模式案例&#10;Signed-off-by: chenjianqiang &lt;wushanxi@gmail.com&gt;" />
     <option name="LAST_COMMIT_MESSAGE" value="增加策略模式案例&#10;Signed-off-by: chenjianqiang &lt;wushanxi@gmail.com&gt;" />
   </component>
+  <component name="XSLT-Support.FileAssociations.UIState">
+    <expand />
+    <select />
+  </component>
 </project>
\ No newline at end of file

src/com/pattern/FactoryPattern/AbstractFactory/materials/AbstractFactoryMain.java

+package com.pattern.FactoryPattern.AbstractFactory.materials;
+
+
+/**
+ * 主方法
+ *
+ * @author lx
+ * @date 2021/10/13 14:34
+ **/
+public class AbstractFactoryMain {
+
+    public void main() {
+
+    }
+
+}

src/com/pattern/FactoryPattern/FunctionFactory/materials/FunctionFactoryMain.java

+package com.pattern.FactoryPattern.FunctionFactory.materials;
+
+import com.pattern.FactoryPattern.FunctionFactory.materials.factory.FactoryA;
+import com.pattern.FactoryPattern.FunctionFactory.materials.factory.FactoryB;
+
+/**
+ * 主方法
+ *
+ * @author lx
+ * @date 2021/10/13 14:34
+ **/
+public class FunctionFactoryMain {
+
+    public void main() {
+        FactoryA a = new FactoryA();
+        System.err.println("工厂A生产：" + a.getProduct().findName());
+
+        FactoryB b = new FactoryB();
+        System.err.println("工厂B生产：" + b.getProduct().findName());
+    }
+
+}

src/com/pattern/FactoryPattern/FunctionFactory/materials/factory/Factory.java

+package com.pattern.FactoryPattern.FunctionFactory.materials.factory;
+
+import com.pattern.FactoryPattern.FunctionFactory.materials.po.Product;
+
+/**
+ * @author lx
+ */
+public interface Factory {
+    /**
+     * 获取产品
+     * @return 产品
+     */
+    Product getProduct();
+}

src/com/pattern/FactoryPattern/FunctionFactory/materials/factory/FactoryA.java

+package com.pattern.FactoryPattern.FunctionFactory.materials.factory;
+
+import com.pattern.FactoryPattern.FunctionFactory.materials.po.Product;
+import com.pattern.FactoryPattern.FunctionFactory.materials.po.ProductA;
+
+/**
+ * @author lx
+ */
+public class FactoryA implements Factory {
+    /**
+     * 获取产品
+     *
+     * @return 产品
+     */
+    @Override
+    public Product getProduct() {
+        return new ProductA();
+    }
+}

src/com/pattern/FactoryPattern/FunctionFactory/materials/factory/FactoryB.java

+package com.pattern.FactoryPattern.FunctionFactory.materials.factory;
+
+import com.pattern.FactoryPattern.FunctionFactory.materials.po.Product;
+import com.pattern.FactoryPattern.FunctionFactory.materials.po.ProductB;
+
+/**
+ * @author lx
+ */
+public class FactoryB implements Factory {
+    /**
+     * 获取产品
+     *
+     * @return 产品
+     */
+    @Override
+    public Product getProduct() {
+        return new ProductB();
+    }
+}

src/com/pattern/FactoryPattern/FunctionFactory/materials/po/Product.java

+package com.pattern.FactoryPattern.FunctionFactory.materials.po;
+
+/**
+ * @author lx
+ * @date 2021/10/13 14:55
+ **/
+public interface Product {
+    /**
+     * 获取名称
+     *
+     * @return 名称
+     */
+    String findName();
+}

src/com/pattern/FactoryPattern/FunctionFactory/materials/po/ProductA.java

+package com.pattern.FactoryPattern.FunctionFactory.materials.po;
+
+/**
+ * @author lx
+ * @date 2021/10/13 14:55
+ **/
+public class ProductA implements Product{
+    /**
+     * 获取名称
+     *
+     * @return 名称
+     */
+    @Override
+    public String findName() {
+        return "ProductA";
+    }
+}

src/com/pattern/FactoryPattern/FunctionFactory/materials/po/ProductB.java

+
+package com.pattern.FactoryPattern.FunctionFactory.materials.po;
+
+/**
+ * @author lx
+ * @date 2021/10/13 14:55
+ **/
+public class ProductB implements Product {
+    /**
+     * 获取名称
+     *
+     * @return 名称
+     */
+    @Override
+    public String findName() {
+        return "ProductB";
+    }
+}

src/com/pattern/FactoryPattern/FunctionFactory/package-info.java

@@ -3,5 +3,18 @@
  */
 package com.pattern.FactoryPattern.FunctionFactory;
 /*
+说明：
+ * 又称工厂模式、多态工厂模式和虚拟构造器模式，通过定义工厂父类负责定义创建对象的公共接口，而子类则负责生成具体的对象。一种常用的对象创建型设计模式,此模式的核心精神是封装 类中不变的部分
+作用：
+ * 将类的实例化（具体产品的创建）延迟到工厂类的子类（具体工厂）中完成，即由子类来决定应该实例化（创建）哪一个类。
+优点：
+ * 符合开-闭原则：新增一种产品时，只需要增加相应的具体产品类和相应的工厂子类即可
+ * 符合单一职责原则：每个具体工厂类只负责创建对应的产品
+缺点：
+ * 增加了系统的复杂度：类的个数将成对增加
+ * 增加了系统的抽象性和理解难度
+ * 一个具体工厂只能创建一种具体产品
+理解性描述：
+ * 一个抽象产品类，可以派生出多个具体产品类。一个抽象工厂类，可以派生出多个具体工厂类。每个具体工厂类只能创建一个具体产品类的实例。
  *
  */

src/com/pattern/FactoryPattern/SimpleFactory/materials/SimpleFactoryMain.java

@@ -15,4 +15,5 @@ public class SimpleFactoryMain {
         Coffee instance = new CoffeeFactory().createInstance("Americano");
         System.err.println("老板来一杯".concat(instance.findName()));
     }
+
 }

src/com/pattern/PatternApplication.java

 package com.pattern;
 
-import com.pattern.FactoryPattern.SimpleFactory.materials.SimpleFactoryMain;
-import com.pattern.StrategyPattern.materials.StrategyMain;
-
 /**
  * @author lx
  */
@@ -17,8 +14,9 @@ public class PatternApplication {
         //new StrategyMain().main();
 
         //工厂模式 -- 简单工厂
-        new SimpleFactoryMain().main();
+        //new SimpleFactoryMain().main();
         //工厂模式 -- 方法工厂
+        //new FunctionFactoryMain().main();
         //工厂模式 -- 抽象工厂
     }