GetBlogThreads

函数参数为BlogThreadQuery类型的自定义对象变量
函数返回为ThreadSet类型的自定义对象变量

GetBlogThreads
    public override ThreadSet GetBlogThreads(BlogThreadQuery query)
    {
        using( SqlConnection connection = GetSqlConnection() ) 
        {
            using(SqlCommand command = new SqlCommand(databaseOwner + ".cs_weblog_Posts_GetPostSet", connection))
            {
                command.CommandType = CommandType.StoredProcedure;

                //以下各行代码下面的注释：第一行为例子时的值，第二行开始为个人注释
                command.Parameters.Add("@SectionID", SqlDbType.Int).Value = query.BlogID;
                // 14    
                //实际意义为：氯胺酮的Blog（自己建立的）
                //如果是论坛，则为版块的ID
                //ps：GroupID为版块集合区的ID，就是说，一个Group下面有多个Section
            
                command.Parameters.Add("@PageIndex", SqlDbType.Int, 4).Value = query.PageIndex;
                //0

                command.Parameters.Add("@PageSize", SqlDbType.Int, 4).Value = query.PageSize;
                //15

                command.Parameters.Add("@sqlPopulate", SqlDbType.NText).Value = SqlGenerator.BuildBlogThreadQuery(query,databaseOwner);
                //SET Transaction Isolation Level Read UNCOMMITTED Select  top 15 P.PostID From dbo.cs_Posts P, dbo.cs_weblog_Posts B  where  P.SectionID = 14 and  B.PostID = P.PostID and P.PostLevel = 1 and B.BlogPostType & 1 <> 0    and P.SettingsID = 1000 and B.SettingsID = 1000  and B.PostConfig & 1 = 1  and P.IsApproved = 1 and P.PostDate <= getdate()   Order by P.PostDate desc

                command.Parameters.Add("@UserID", SqlDbType.Int).Value = query.UserID;
                // 2105    
                //怎样从GUID换算成这么一个int？
                //是否每次不一样？经过第二次跟踪每次一样
                //好像不是经过换算，跟踪其他用户的ID，发现在我公司起的这个CS里，每个userid都是从21开头，4位整数
                //2101，2102，2105。。。

                command.Parameters.Add("@IncludeCategories", SqlDbType.Bit).Value = query.IncludeCategories;
                //false

                command.Parameters.Add("@TotalRecords", SqlDbType.Int).Direction = ParameterDirection.Output;
                command.Parameters.Add(SettingsIDParameter());

                ThreadSet ts = new ThreadSet();

                // Execute the command
                
                //If we want to display the list of categories for the post, we will need to 
                //use a dataset so we can join the child records
                if(query.IncludeCategories)
                {
                    DataSet ds = new DataSet();
                    SqlDataAdapter da = new SqlDataAdapter(command);

                    //wait as long as possible to open the conn
                    connection.Open();
                    da.Fill(ds);
                    connection.Close();

                    //keep a referece to the relation since it is used in the GetChildRows look up anyway
                    DataRelation relation = new DataRelation("Categories",ds.Tables[0].Columns["PostID"],ds.Tables[1].Columns["PostID"],false);
                    ds.Relations.Add(relation);
                    
                    DataRowCollection posts = ds.Tables[0].Rows;
                    foreach(DataRow dr in posts)
                    {
                        ts.Threads.Add(PopulateWeblogPostContentFromDataRow(dr,relation));
                    }
                    ds.Clear();
                    ds.Dispose();

                    ts.TotalRecords = (int) command.Parameters["@TotalRecords"].Value;

                }
                else
                {
                    //No categories needed, so we can use a datareader.

                    connection.Open();
                    using(SqlDataReader dr = command.ExecuteReader(CommandBehavior.CloseConnection))
                    {
                    
                        while(dr.Read())
                        {
                            ts.Threads.Add(PopulateWeblogPostContentFromIDataReader(dr));
                        }

                        //                            if(query.IncludeCategories)
                        //                                dr.NextResult();

                        dr.NextResult();
                        ts.TotalRecords = (int) command.Parameters["@TotalRecords"].Value;
                
                    }
                }

                return ts;

            }
        }
    }