/// <summary>
/// 添加实例事务时候新建索引。
/// </summary>
/// <typeparam name="TParentIndex">索引类型。</typeparam>
/// <param name="db">数据库事务操作接口实例。</param>
/// <param name="id">当前实例Id。</param>
/// <param name="parentId">父级Id。</param>
/// <returns>返回添加结果。</returns>
public static bool CreateIndex <TParentIndex>(this IDbTransactionContext <TParentIndex> db, int id, int parentId)
where TParentIndex : IParentIndex, new()
{
//最顶级无需更新
if (parentId <= 0)
{
return(true);
}
db.ExecuteNonQuery($@"INSERT INTO {db.EntityType.Table}(ParentId, Id) SELECT ParentId, {id} FROM {db.EntityType.Table} WITH(NOLOCK) WHERE Id = {parentId};");
return(db.Create(new TParentIndex {
Id = id, ParentId = parentId
}));
}
