完成角色的授权的功能

src/main/java/cn/iocoder/dashboard/modules/system/dal/mysql/dao/permission/SysRoleMenuMapper.java

@@ -1,9 +1,35 @@
 package cn.iocoder.dashboard.modules.system.dal.mysql.dao.permission;
 
 import cn.iocoder.dashboard.modules.system.dal.mysql.dataobject.permission.SysRoleMenuDO;
+import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
 import com.baomidou.mybatisplus.core.mapper.BaseMapper;
 import org.apache.ibatis.annotations.Mapper;
 
+import java.util.Collection;
+import java.util.List;
+import java.util.stream.Collectors;
+
 @Mapper
 public interface SysRoleMenuMapper extends BaseMapper<SysRoleMenuDO> {
+
+    default List<SysRoleMenuDO> selectListByRoleId(Long roleId) {
+        return selectList(new QueryWrapper<SysRoleMenuDO>().eq("role_id", roleId));
+    }
+
+    default void insertList(Long roleId, Collection<Long> menuIds) {
+        List<SysRoleMenuDO> list = menuIds.stream().map(menuId -> {
+            SysRoleMenuDO entity = new SysRoleMenuDO();
+            entity.setRoleId(roleId);
+            entity.setMenuId(menuId);
+            return entity;
+        }).collect(Collectors.toList());
+        // TODO 芋艿，mybatis plus 增加批量插入的功能
+        list.forEach(this::insert);
+    }
+
+    default void deleteListByRoleIdAndMenuIds(Long roleId, Collection<Long> menuIds) {
+        delete(new QueryWrapper<SysRoleMenuDO>().eq("role_id", roleId)
+                .in("menu_id", menuIds));
+    }
+
 }