feat(web): 增加操作实体的方便方法

gringotts-web/src/main/java/com/eshore/gringotts/web/helper/EntityHelper.java

@@ -0,0 +1,32 @@
+package com.eshore.gringotts.web.helper;
+
+import cn.hutool.core.util.ObjectUtil;
+import com.eshore.gringotts.web.domain.base.entity.SimpleEntity;
+import com.eshore.gringotts.web.domain.user.entity.User;
+import com.eshore.gringotts.web.domain.user.service.UserService;
+import java.util.function.Supplier;
+import org.springframework.data.jpa.repository.JpaRepository;
+
+/**
+ * JPA工具
+ *
+ * @author lanyuanxiaoyao
+ * @date 2024-11-25
+ */
+public class EntityHelper {
+    public static <E, ID> void deleteIfUpdateNeeded(JpaRepository<E, ID> repository, Supplier<E> getter, E target) {
+        E old = getter.get();
+        if (ObjectUtil.notEqual(old, target)) {
+            repository.delete(old);
+        }
+    }
+
+    public static <E extends SimpleEntity> E fillCreatorAndModifier(E entity, UserService service) {
+        User user = service.currentLoginUser();
+        if (ObjectUtil.isNull(entity.getCreatedUser())) {
+            entity.setCreatedUser(user);
+        }
+        entity.setModifiedUser(user);
+        return entity;
+    }
+}