/// <summary>
/// 设置指定的查询语句并返回当前语句
/// </summary>
/// <param name="command">选择语句</param>
/// <param name="type">主题类型</param>
/// <param name="relativeID">相关ID</param>
/// <param name="includeHide">是否包含隐藏主题</param>
/// <returns>当前语句</returns>
internal static SelectCommand Where(this SelectCommand command, ForumTopicType type, Int32 relativeID, Boolean includeHide)
{
SqlConditionBuilder c = command.ConditionBuilder;
AbstractSqlCondition condition = command.WhereCondition as AbstractSqlCondition;
AbstractSqlCondition temp = null;
//不包含隐藏
if (!includeHide)
{
temp = c.Equal(ForumTopicRepository.ISHIDE, false);
condition = (condition == null ? temp : condition & temp);
}
if (type == ForumTopicType.Default) //普通讨论板中包括题目专属讨论板的帖子
{
temp = c.LessThan(ForumTopicRepository.TYPE, (Byte)ForumTopicType.Contest); //普通0，题目1，竞赛2
condition = (condition == null ? temp : condition & temp);
}
else//竞赛或题目专属讨论板只有专属帖子
{
temp = c.Equal(ForumTopicRepository.TYPE, (Byte)type) & c.Equal(ForumTopicRepository.RELATIVEID, relativeID);
condition = (condition == null ? temp : condition & temp);
}
return(command.Where(condition));
}
/// <summary>
/// 设置指定的查询语句并返回当前语句
/// </summary>
/// <param name="command">选择语句</param>
/// <param name="topics">主题列表</param>
/// <param name="includeHide">是否包含隐藏主题</param>
/// <returns>当前语句</returns>
internal static SelectCommand Where(this SelectCommand command, IList <ForumTopicEntity> topics, Boolean includeHide)
{
SqlConditionBuilder c = command.ConditionBuilder;
AbstractSqlCondition condition = command.WhereCondition as AbstractSqlCondition;
AbstractSqlCondition temp = null;
if (!includeHide)
{
temp = c.Equal(ForumPostRepository.ISHIDE, false);
condition = (condition == null ? temp : condition & temp);
}
if (topics != null)
{
temp = c.In <Int32>(ForumPostRepository.TOPICID, () =>
{
List <Int32> ids = new List <Int32>();
for (Int32 i = 0; i < topics.Count; i++)
{
ids.Add(topics[i].TopicID);
}
return(ids);
});
condition = (condition == null ? temp : condition & temp);
}
return(command.Where(condition));
}
/// <summary>
/// 设置指定的查询语句并返回当前语句
/// </summary>
/// <param name="command">相关语句</param>
/// <param name="cid">竞赛ID</param>
/// <param name="pid">题目ID</param>
/// <param name="userName">用户名</param>
/// <param name="languageType">提交语言</param>
/// <param name="resultType">提交结果</param>
/// <returns>当前语句</returns>
internal static SelectCommand Where(this SelectCommand command, Int32 cid, Int32 pid, String userName, LanguageType languageType, ResultType?resultType)
{
SqlConditionBuilder c = command.ConditionBuilder;
AbstractSqlCondition condition = command.WhereCondition as AbstractSqlCondition;
AbstractSqlCondition temp = null;
//竞赛ID，非竞赛为-1
if (cid >= 0)
{
temp = c.Equal(SolutionRepository.CONTESTID, cid);
condition = (condition == null ? temp : condition & temp);
}
//题目ID，如果为竞赛从竞赛题目顺序查找，否则从题目ID查找
if (pid >= 0)
{
temp = c.Equal((cid >= 0 ? SolutionRepository.CONTESTPROBLEMID : SolutionRepository.PROBLEMID), pid);
condition = (condition == null ? temp : condition & temp);
}
//用户名
if (!String.IsNullOrEmpty(userName))
{
temp = c.Equal(SolutionRepository.USERNAME, userName);
condition = (condition == null ? temp : condition & temp);
}
//提交程序语言
if (!LanguageType.IsNull(languageType))
{
temp = c.Equal(SolutionRepository.LANGUAGE, languageType.ID);
condition = (condition == null ? temp : condition & temp);
}
//提交结果
if (resultType.HasValue)
{
temp = c.Equal(SolutionRepository.RESULT, (Byte)resultType.Value);
condition = (condition == null ? temp : condition & temp);
}
return(command.Where(condition));
}
/// <summary>
/// 设置指定的查询语句并返回当前语句
/// </summary>
/// <param name="command">选择语句</param>
/// <param name="fpids">帖子ID列表</param>
/// <param name="ftids">主题ID列表</param>
/// <param name="userName">发帖用户名</param>
/// <param name="title">帖子标题</param>
/// <param name="content">帖子内容</param>
/// <param name="isHide">是否隐藏</param>
/// <param name="startDate">发帖开始时间</param>
/// <param name="endDate">发帖结束时间</param>
/// <param name="postip">发帖IP</param>
/// <returns>当前语句</returns>
internal static SelectCommand Where(this SelectCommand command, String fpids, String ftids, String userName, String title, String content, Boolean?isHide, DateTime?startDate, DateTime?endDate, String postip)
{
SqlConditionBuilder c = command.ConditionBuilder;
AbstractSqlCondition condition = command.WhereCondition as AbstractSqlCondition;
AbstractSqlCondition temp = null;
//帖子ID
if (!String.IsNullOrEmpty(fpids))
{
temp = c.InInt32(ForumPostRepository.POSTID, fpids, ',');
condition = (condition == null ? temp : condition & temp);
}
//主题ID
if (!String.IsNullOrEmpty(ftids))
{
temp = c.InInt32(ForumPostRepository.TOPICID, ftids, ',');
condition = (condition == null ? temp : condition & temp);
}
//用户名
if (!String.IsNullOrEmpty(userName))
{
temp = c.LikeAll(ForumPostRepository.USERNAME, userName);
condition = (condition == null ? temp : condition & temp);
}
//帖子标题
if (!String.IsNullOrEmpty(title))
{
temp = c.LikeAll(ForumPostRepository.TITLE, title);
condition = (condition == null ? temp : condition & temp);
}
//帖子内容
if (!String.IsNullOrEmpty(content))
{
temp = c.LikeAll(ForumPostRepository.CONTENT, content);
condition = (condition == null ? temp : condition & temp);
}
//是否隐藏
if (isHide.HasValue)
{
temp = c.Equal(ForumPostRepository.ISHIDE, isHide.Value);
condition = (condition == null ? temp : condition & temp);
}
//发布日期范围
if (startDate.HasValue || endDate.HasValue)
{
temp = c.BetweenNullable <DateTime>(ForumPostRepository.POSTDATE, startDate, endDate);
condition = (condition == null ? temp : condition & temp);
}
//发布IP
if (!String.IsNullOrEmpty(postip))
{
temp = c.LikeAll(ForumPostRepository.POSTIP, postip);
condition = (condition == null ? temp : condition & temp);
}
return(command.Where(condition));
}
/// <summary>
/// 设置指定的查询语句并返回当前语句
/// </summary>
/// <param name="command">选择语句</param>
/// <param name="names">用户名包含</param>
/// <param name="nickname">昵称包含</param>
/// <param name="email">邮箱包含</param>
/// <param name="school">学校包含</param>
/// <param name="lastIP">最后登录IP</param>
/// <param name="islocked">是否锁定</param>
/// <param name="regStartDate">注册日期开始</param>
/// <param name="regEndDate">注册日期结束</param>
/// <param name="loginStartDate">最后登录日期开始</param>
/// <param name="loginEndDate">最后登录日期结束</param>
/// <returns>当前语句</returns>
internal static SelectCommand Where(this SelectCommand command, String names, String nickname, String email, String school, String lastIP, Boolean?islocked, DateTime?regStartDate, DateTime?regEndDate, DateTime?loginStartDate, DateTime?loginEndDate)
{
SqlConditionBuilder c = command.ConditionBuilder;
AbstractSqlCondition condition = command.WhereCondition as AbstractSqlCondition;
AbstractSqlCondition temp = null;
//用户名列表模糊
if (!String.IsNullOrEmpty(names))
{
String[] arrnames = names.Split(',');
AbstractSqlCondition innertemp = null;
temp = null;
for (Int32 i = 0; i < arrnames.Length; i++)
{
if (!String.IsNullOrEmpty(arrnames[i]))
{
innertemp = c.LikeAll(UserRepository.USERNAME, arrnames[i]);
temp = (temp == null ? innertemp : innertemp | temp);
}
}
condition = (condition == null ? temp : condition & temp);
}
//昵称模糊
if (!String.IsNullOrEmpty(nickname))
{
temp = c.LikeAll(UserRepository.NICKNAME, nickname);
condition = (condition == null ? temp : condition & temp);
}
//邮箱模糊
if (!String.IsNullOrEmpty(email))
{
temp = c.LikeAll(UserRepository.EMAIL, email);
condition = (condition == null ? temp : condition & temp);
}
//学校模糊
if (!String.IsNullOrEmpty(school))
{
temp = c.LikeAll(UserRepository.SCHOOL, school);
condition = (condition == null ? temp : condition & temp);
}
//最后登录IP模糊
if (!String.IsNullOrEmpty(lastIP))
{
temp = c.LikeAll(UserRepository.LASTIP, lastIP);
condition = (condition == null ? temp : condition & temp);
}
//是否锁定
if (islocked.HasValue)
{
temp = c.Equal(UserRepository.ISLOCKED, islocked.Value);
condition = (condition == null ? temp : condition & temp);
}
//注册日期范围
if (regStartDate.HasValue || regEndDate.HasValue)
{
temp = c.BetweenNullable <DateTime>(UserRepository.CREATEDATE, regStartDate, regEndDate);
condition = (condition == null ? temp : condition & temp);
}
//登陆日期范围
if (loginStartDate.HasValue || loginEndDate.HasValue)
{
temp = c.BetweenNullable <DateTime>(UserRepository.LASTDATE, loginStartDate, loginEndDate);
condition = (condition == null ? temp : condition & temp);
}
return(command.Where(condition));
}
/// <summary>
/// 设置指定的查询语句并返回当前语句
/// </summary>
/// <param name="command">选择语句</param>
/// <param name="ftids">主题ID列表</param>
/// <param name="userName">发帖人</param>
/// <param name="title">主题标题</param>
/// <param name="type">主题类型</param>
/// <param name="relativeID">相关ID</param>
/// <param name="isLocked">是否锁定</param>
/// <param name="isHide">是否隐藏</param>
/// <param name="startDate">发帖开始时间</param>
/// <param name="endDate">发帖结束时间</param>
/// <returns>当前语句</returns>
internal static SelectCommand Where(this SelectCommand command, String ftids, String userName, String title, ForumTopicType?type, Int32 relativeID, Boolean?isLocked, Boolean?isHide, DateTime?startDate, DateTime?endDate)
{
SqlConditionBuilder c = command.ConditionBuilder;
AbstractSqlCondition condition = command.WhereCondition as AbstractSqlCondition;
AbstractSqlCondition temp = null;
//主题ID
if (!String.IsNullOrEmpty(ftids))
{
temp = c.InInt32(ForumTopicRepository.TOPICID, ftids, ',');
condition = (condition == null ? temp : condition & temp);
}
//用户名
if (!String.IsNullOrEmpty(userName))
{
temp = c.LikeAll(ForumTopicRepository.USERNAME, userName);
condition = (condition == null ? temp : condition & temp);
}
//主题标题
if (!String.IsNullOrEmpty(title))
{
temp = c.LikeAll(ForumTopicRepository.TITLE, title);
condition = (condition == null ? temp : condition & temp);
}
//主题类型
if (type.HasValue)
{
temp = c.Equal(ForumTopicRepository.TYPE, (Byte)type.Value);
condition = (condition == null ? temp : condition & temp);
}
//相关ID
if (relativeID >= 0)
{
temp = c.Equal(ForumTopicRepository.RELATIVEID, relativeID);
condition = (condition == null ? temp : condition & temp);
}
//是否锁定
if (isLocked.HasValue)
{
temp = c.Equal(ForumTopicRepository.ISLOCKED, isLocked.Value);
condition = (condition == null ? temp : condition & temp);
}
//是否隐藏
if (isHide.HasValue)
{
temp = c.Equal(ForumTopicRepository.ISHIDE, isHide.Value);
condition = (condition == null ? temp : condition & temp);
}
//发布日期范围
if (startDate.HasValue || endDate.HasValue)
{
temp = c.BetweenNullable <DateTime>(ForumTopicRepository.LASTDATE, startDate, endDate);
condition = (condition == null ? temp : condition & temp);
}
return(command.Where(condition));
}
/// <summary>
/// 设置指定查询的语句并返回当前语句
/// </summary>
/// <typeparam name="T">实体类类型</typeparam>
/// <param name="cmd">选择语句</param>
/// <param name="expr">Linq表达式</param>
/// <exception cref="LinqNotSupportedException">Linq操作不支持</exception>
/// <returns>当前语句</returns>
/// <example>
/// <code lang="C#">
/// <![CDATA[
/// public class UserRepository : DatabaseTable<User>
/// {
/// //other necessary code
///
/// public User GetEntity(Int32 userID)
/// {
/// return this.Select()
/// .Querys<User>(c => new { c.UserID, c.UserName })
/// .Where<User>(c => c.UserID == userID)
/// .ToEntity<User>(this) > 0;
///
/// //SELECT UserID, UserName From tbl_Users WHERE UserID = @UserID
/// //@UserID = userID
/// }
/// }
/// ]]>
/// </code>
/// </example>
public static SelectCommand Where <T>(this SelectCommand cmd, Expression <Func <T, Boolean> > expr)
{
return(cmd.Where(SqlLinqCondition.Create <T>(cmd, expr)));
}
