perf(extension/crud): 优化 BaseServiceImpl 中获取各泛型参数类型的方式

continew-starter-core/src/main/java/top/charles7c/continew/starter/core/util/ClassUtils.java

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2022-present Charles7c Authors. All Rights Reserved.
+ * <p>
+ * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE 3.0;
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ * <p>
+ * http://www.gnu.org/licenses/lgpl.html
+ * <p>
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package top.charles7c.continew.starter.core.util;
+
+import cn.hutool.core.util.ArrayUtil;
+import cn.hutool.core.util.TypeUtil;
+
+import java.lang.reflect.Type;
+
+/**
+ * 类工具类
+ *
+ * @author Charles7c
+ * @since 1.1.1
+ */
+public class ClassUtils {
+
+    /**
+     * 获得给定类的所有泛型参数
+     *
+     * @param clazz 被检查的类，必须是已经确定泛型类型的类
+     * @return {@link Class}[]
+     */
+    public static Class<?>[] getTypeArguments(Class<?> clazz) {
+        final Type[] typeArguments = TypeUtil.getTypeArguments(clazz);
+        if (ArrayUtil.isEmpty(typeArguments)) {
+            return new Class[0];
+        }
+        final Class<?>[] classes = new Class<?>[typeArguments.length];
+        for (int i = 0; i < typeArguments.length; i++) {
+            classes[i] = TypeUtil.getClass(typeArguments[i]);
+        }
+        return classes;
+    }
+}

continew-starter-extension/continew-starter-extension-crud/src/main/java/top/charles7c/continew/starter/extension/crud/base/BaseServiceImpl.java

@@ -33,6 +33,7 @@ import jakarta.servlet.http.HttpServletResponse;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.domain.Sort;
 import org.springframework.transaction.annotation.Transactional;
+import top.charles7c.continew.starter.core.util.ClassUtils;
 import top.charles7c.continew.starter.core.util.ExceptionUtils;
 import top.charles7c.continew.starter.core.util.ReflectUtils;
 import top.charles7c.continew.starter.core.util.validate.CheckUtils;
@@ -67,15 +68,10 @@ public abstract class BaseServiceImpl<M extends BaseMapper<T>, T extends BaseDO,
     @Autowired
     protected M baseMapper;
 
-    private final Class<T> entityClass;
-    private final Class<L> listClass;
-    private final Class<D> detailClass;
-
-    protected BaseServiceImpl() {
-        this.entityClass = (Class<T>) ClassUtil.getTypeArgument(this.getClass(), 1);
-        this.listClass = (Class<L>) ClassUtil.getTypeArgument(this.getClass(), 2);
-        this.detailClass = (Class<D>) ClassUtil.getTypeArgument(this.getClass(), 3);
-    }
+    private final Class<?>[] typeArguments = ClassUtils.getTypeArguments(this.getClass());
+    protected final Class<T> entityClass = this.currentEntityClass();
+    protected final Class<L> listClass = this.currentListClass();
+    protected final Class<D> detailClass = this.currentDetailClass();
 
     @Override
     public PageResp<L> page(Q query, PageQuery pageQuery) {
@@ -226,14 +222,41 @@ public abstract class BaseServiceImpl<M extends BaseMapper<T>, T extends BaseDO,
      * @param detailObj 待填充详情信息
      */
     public void fillDetail(Object detailObj) {
-        if (detailObj instanceof BaseDetailResp detail) {
-            this.fill(detail);
-            Long updateUser = detail.getUpdateUser();
+        if (detailObj instanceof BaseDetailResp detailResp) {
+            this.fill(detailResp);
+            Long updateUser = detailResp.getUpdateUser();
             if (null == updateUser) {
                 return;
             }
             CommonUserService userService = SpringUtil.getBean(CommonUserService.class);
-            detail.setUpdateUserString(ExceptionUtils.exToNull(() -> userService.getNicknameById(updateUser)));
+            detailResp.setUpdateUserString(ExceptionUtils.exToNull(() -> userService.getNicknameById(updateUser)));
         }
     }
+
+    /**
+     * 获取当前实体类型
+     *
+     * @return 当前实体类型
+     */
+    protected Class<T> currentEntityClass() {
+        return (Class<T>) this.typeArguments[1];
+    }
+
+    /**
+     * 获取当前列表信息类型
+     *
+     * @return 当前列表信息类型
+     */
+    protected Class<L> currentListClass() {
+        return (Class<L>) this.typeArguments[2];
+    }
+
+    /**
+     * 获取当前详情信息类型
+     *
+     * @return 当前详情信息类型
+     */
+    protected Class<D> currentDetailClass() {
+        return (Class<D>) this.typeArguments[3];
+    }
 }