/// <summary>
/// 获取文章信息
/// 结果会按文章Id和当前登录用户缓存一定时间
/// </summary>
/// <param name="articleId">文章Id</param>
/// <returns></returns>
public virtual object GetArticleApiInfo(Guid articleId)
{
return(ArticleApiInfoCache.GetOrCreate(articleId, () => {
using (UnitOfWork.Scope()) {
var article = Get(articleId);
if (article == null)
{
return null;
}
var author = article.Author;
var classes = article.Classes.Select(c => new { id = c.Id, name = c.Name }).ToList();
var tags = article.Tags.Select(t => new { id = t.Id, name = t.Name }).ToList();
var keywords = classes.Select(c => c.name).Concat(tags.Select(t => t.name)).ToList();
return new {
id = article.Id,
title = article.Title,
summary = article.Summary,
contents = article.Contents,
authorId = author?.Id,
authorName = author?.Username,
classes,
tags,
keywords,
createTime = article.CreateTime,
updateTime = article.UpdateTime
};
}
}, ArticleApiInfoCacheTime));
}
/// <summary>
/// 获取文章信息
/// 结果会按文章Id和当前登录用户缓存一定时间
/// </summary>
/// <param name="articleId">文章Id</param>
/// <returns></returns>
public virtual object GetArticleApiInfo(long articleId)
{
// 从缓存中获取
var info = ArticleApiInfoCache.GetOrDefault(articleId);
if (info != null)
{
return(info);
}
// 从数据库中获取
UnitOfWork.ReadData <Database.Article>(r => {
var article = r.GetByIdWhereNotDeleted(articleId);
if (article == null)
{
return;
}
var author = article.Author;
var classes = article.Classes.Select(c => new { id = c.Id, name = c.Name }).ToList();
var tags = article.Tags.Select(t => new { id = t.Id, name = t.Name }).ToList();
var keywords = classes.Select(c => c.name).Concat(tags.Select(t => t.name)).ToList();
info = new {
id = article.Id,
title = article.Title,
summary = article.Summary,
contents = article.Contents,
authorId = author == null ? null : (long?)author.Id,
authorName = author == null ? null : author.Username,
classes,
tags,
keywords,
createTime = article.CreateTime,
lastUpdated = article.LastUpdated
};
// 保存到缓存中
ArticleApiInfoCache.Put(articleId, info, ArticleApiInfoCacheTime);
});
return(info);
}
/// <summary>
/// 清理缓存
/// </summary>
public void ClearCache()
{
ArticleApiInfoCache.Clear();
ArticleSearchResultCache.Clear();
}
