/// <summary>
/// 向数据源添加评论索引实体对象及其对应的内容实体对象。
/// </summary>
/// <param name="dataFacade"></param>
/// <param name="indexEntity">要添加的索引实体对象。</param>
/// <param name="contentEntity">要添加的内容实体对象。</param>
/// <returns></returns>
/// <exception cref="ArgumentNullException">
/// <paramref name="indexEntity"/>为null
/// 或
/// <paramref name="contentEntity"/>为null
/// </exception>
public static async Task AddPostComment(this IDataFacade dataFacade,
CommentEntity indexEntity, CommentContentEntity contentEntity)
{
if (indexEntity == null)
{
throw new ArgumentNullException(nameof(indexEntity));
}
if (contentEntity == null)
{
throw new ArgumentNullException(nameof(contentEntity));
}
dataFacade.AddCommentIndexEntity(indexEntity);
await dataFacade.CommitChanges();
await dataFacade.AddCommentContentEntity(contentEntity);
}