// 实现IComparable接口的CompareTo()方法,
// 根据ID比较两个对象的大小，以便排序，
// 按右对齐方式比较
// obj: An object to compare with this instance
// 返回值 A 32-bit signed integer that indicates the relative order of the comparands. The return value has these meanings:
// Less than zero: This instance is less than obj.
// Zero: This instance is equal to obj.
// Greater than zero: This instance is greater than obj.
// 异常: ArgumentException,obj is not the same type as this instance.
public override int CompareTo(object obj)
{
TopArticleItem item = (TopArticleItem)obj;
if (this.m_ticks == 0)
{
throw (new Exception("this.ticks不能为0"));
}
if (item.m_ticks == 0)
{
throw (new Exception("item.ticks不能为0"));
}
if (this.m_bColumnTop != item.m_bColumnTop)
{
if (this.m_bColumnTop != 0)
{
return((-1) * 1);
}
return((-1) * (-1));
}
long delta = this.m_ticks - item.m_ticks;
if (delta != 0)
{
if (delta < 0)
{
return((-1) * (-1));
}
else
{
return((-1) * 1);
}
}
/*
* delta = this.m_id - item.m_id;
* if (delta != 0)
* {
* if (delta < 0)
* return (-1) * (-1);
* else
* return (-1) * 1;
* }
* */
return(0);
}
// 快速获得事项的记录路径
public string GetItemRecPath(Int64 nIndex)
{
// 加读锁
this.m_lock.AcquireReaderLock(m_nLockTimeout);
try
{
TopArticleItem item = (TopArticleItem)this.GetCompareItem(nIndex, false);
if (item == null)
{
return(""); // error
}
return(item.m_strRecPath);
}
finally
{
this.m_lock.ReleaseReaderLock();
}
}
// [外部调用]
// 修改评注记录后，更新栏目存储结构
// parameters:
// strAction 动作。change/delete/new
// return:
// -2 栏目缓存尚未创建,因此无从更新
// -1 error
// 0 not found line object
// 1 succeed
public int UpdateLine(
System.Web.UI.Page page,
string strAction,
string strRecPath,
string strXml,
out string strError)
{
strError = "";
if (this.CommentColumn == null
|| this.CommentColumn.Opened == false)
{
strError = "尚未创建栏目缓存...";
return -2;
}
this.m_lockCommentColumn.AcquireWriterLock(m_nCommentColumnLockTimeout);
try
{
int nIndex = -1;
int i = 0;
Line line = null;
if (strAction == "change" || strAction == "delete")
{
// 在Storage中找
// 需要写锁定
for (i = 0; i < this.CommentColumn.Count; i++)
{
string strCurrentRecPath = this.CommentColumn.GetItemRecPath(i);
if (strCurrentRecPath == strRecPath)
{
nIndex = i;
line = ((TopArticleItem)this.CommentColumn[nIndex]).Line;
Debug.Assert(line.m_strRecPath == strRecPath, "");
this.CommentColumn.RemoveAt(nIndex);
if (strAction == "delete")
return 1;
break; // goto FOUND;
}
}
if (strAction == "delete")
return 0;
}
else if (strAction == "new")
{
line = new Line();
line.m_strRecPath = strRecPath;
}
else
{
strError = "未知的strAction值 '" + strAction + "'";
return -1;
}
// FOUND:
if (strAction == "delete")
return 1;
int nRet = line.ProcessXml(
null, // page, 这里至关重要，不能允许灵敏中断
strXml,
out strError);
if (nRet == -1)
{
// 将此情况写入错误日志
this.WriteErrorLog("在UpdateLine()函数中，调用line.ProcessXml()发生错误, 记录路径=" + line.m_strRecPath + ")。这将导致栏目主页面中，该记录从显示中丢失。详细原因：" + strError);
return -1;
}
{
// 如果插入位置在Storage范围内
TopArticleItem item = new TopArticleItem();
item.Line = line;
this.CommentColumn.Insert(0,
item);
}
return 1;
}
finally
{
this.m_lockCommentColumn.ReleaseWriterLock();
}
}
// 检索顶层文章
// return:
// -1 error
// 其他 命中数
private int SearchTopLevelArticles(
SessionInfo sessioninfo,
System.Web.UI.Page page,
out string strError)
{
strError = "";
if (page != null
&& page.Response.IsClientConnected == false) // 灵敏中断
{
strError = "中断";
return -1;
}
// 检索全部评注文章 一定时间范围内的?
List<string> dbnames = new List<string>();
for (int i = 0; i < this.ItemDbs.Count; i++)
{
ItemDbCfg cfg = this.ItemDbs[i];
string strDbName = cfg.CommentDbName;
if (String.IsNullOrEmpty(strDbName) == true)
continue;
dbnames.Add(strDbName);
}
DateTime now = DateTime.Now;
DateTime oneyearbefore = now - new TimeSpan(365, 0, 0, 0);
string strTime = DateTimeUtil.Rfc1123DateTimeString(oneyearbefore.ToUniversalTime());
string strQueryXml = "";
for (int i = 0; i < dbnames.Count; i++)
{
string strDbName = dbnames[i];
string strOneQueryXml = "<target list='" + strDbName + ":" + "最后修改时间'><item><word>" // <order>DESC</order>
+ strTime + "</word><match>exact</match><relation>" + StringUtil.GetXmlStringSimple(">=") + "</relation><dataType>number</dataType><maxCount>"
+ "-1"// Convert.ToString(m_nMaxLineCount)
+ "</maxCount></item><lang>zh</lang></target>";
if (i > 0)
strQueryXml += "<operator value='OR' />";
strQueryXml += strOneQueryXml;
}
if (dbnames.Count > 0)
strQueryXml = "<group>" + strQueryXml + "</group>";
RmsChannel channel = sessioninfo.Channels.GetChannel(this.WsUrl);
Debug.Assert(channel != null, "Channels.GetChannel 异常");
if (page != null)
{
page.Response.Write("--- begin search ...<br/>");
page.Response.Flush();
}
DateTime time = DateTime.Now;
long nRet = channel.DoSearch(strQueryXml,
"default",
out strError);
if (nRet == -1)
{
strError = "检索时出错: " + strError;
return -1;
}
TimeSpan delta = DateTime.Now - time;
if (page != null)
{
page.Response.Write("search end. hitcount=" + nRet.ToString() + ", time=" + delta.ToString() + "<br/>");
page.Response.Flush();
}
if (nRet == 0)
return 0; // not found
if (page != null
&& page.Response.IsClientConnected == false) // 灵敏中断
{
strError = "中断";
return -1;
}
if (page != null)
{
page.Response.Write("--- begin get search result ...<br/>");
page.Response.Flush();
}
time = DateTime.Now;
List<string> aPath = null;
nRet = channel.DoGetSearchResult(
"default",
-1,
"zh",
null, // stop,
out aPath,
out strError);
if (nRet == -1)
{
strError = "获得检索结果时出错: " + strError;
return -1;
}
if (page != null)
{
delta = DateTime.Now - time;
page.Response.Write("get search result end. lines=" + aPath.Count.ToString() + ", time=" + delta.ToString() + "<br/>");
page.Response.Flush();
}
if (aPath.Count == 0)
{
strError = "获取的检索结果为空";
return -1;
}
if (page != null
&& page.Response.IsClientConnected == false) // 灵敏中断
{
strError = "中断";
return -1;
}
if (page != null)
{
page.Response.Write("--- begin build storage ...<br/>");
page.Response.Flush();
}
time = DateTime.Now;
this.CommentColumn.Clear(); // 清空集合
// 加入新行对象。新行对象中，只初始化了m_strRecPath参数
for (int i = 0; i < Math.Min(aPath.Count, 1000000); i++) // <Math.Min(aPath.Count, 10)
{
Line line = new Line();
// line.Container = this;
line.m_strRecPath = aPath[i];
nRet = line.InitialInfo(
page,
channel,
out strError);
if (nRet == -1)
return -1;
if (nRet == 1)
return -1; // 灵敏中断
TopArticleItem item = new TopArticleItem();
item.Line = line;
this.CommentColumn.Add(item);
if (page != null
&& (i % 100) == 0)
{
page.Response.Write("process " + Convert.ToString(i) + "<br/>");
page.Response.Flush();
}
}
if (page != null)
{
delta = DateTime.Now - time;
page.Response.Write("build storage end. time=" + delta.ToString() + "<br/>");
page.Response.Flush();
}
return 1;
}
// [外部调用]
// 修改评注记录后，更新栏目存储结构
// parameters:
// strAction 动作。change/delete/new
// return:
// -2 栏目缓存尚未创建,因此无从更新
// -1 error
// 0 not found line object
// 1 succeed
public int UpdateLine(
System.Web.UI.Page page,
string strAction,
string strRecPath,
string strXml,
out string strError)
{
strError = "";
if (this.CommentColumn == null ||
this.CommentColumn.Opened == false)
{
strError = "尚未创建栏目缓存...";
return(-2);
}
this.m_lockCommentColumn.AcquireWriterLock(m_nCommentColumnLockTimeout);
try
{
int nIndex = -1;
int i = 0;
Line line = null;
if (strAction == "change" || strAction == "delete")
{
// 在Storage中找
// 需要写锁定
for (i = 0; i < this.CommentColumn.Count; i++)
{
string strCurrentRecPath = this.CommentColumn.GetItemRecPath(i);
if (strCurrentRecPath == strRecPath)
{
nIndex = i;
line = ((TopArticleItem)this.CommentColumn[nIndex]).Line;
Debug.Assert(line.m_strRecPath == strRecPath, "");
this.CommentColumn.RemoveAt(nIndex);
if (strAction == "delete")
{
return(1);
}
break; // goto FOUND;
}
}
if (strAction == "delete")
{
return(0);
}
}
else if (strAction == "new")
{
line = new Line();
line.m_strRecPath = strRecPath;
}
else
{
strError = "未知的strAction值 '" + strAction + "'";
return(-1);
}
// FOUND:
if (strAction == "delete")
{
return(1);
}
int nRet = line.ProcessXml(
null, // page, 这里至关重要，不能允许灵敏中断
strXml,
out strError);
if (nRet == -1)
{
// 将此情况写入错误日志
this.WriteErrorLog("在UpdateLine()函数中，调用line.ProcessXml()发生错误, 记录路径=" + line.m_strRecPath + ")。这将导致栏目主页面中，该记录从显示中丢失。详细原因：" + strError);
return(-1);
}
{
// 如果插入位置在Storage范围内
TopArticleItem item = new TopArticleItem();
item.Line = line;
this.CommentColumn.Insert(0,
item);
}
return(1);
}
finally
{
this.m_lockCommentColumn.ReleaseWriterLock();
}
}
// 检索顶层文章
// return:
// -1 error
// 其他 命中数
private int SearchTopLevelArticles(
SessionInfo sessioninfo,
System.Web.UI.Page page,
out string strError)
{
strError = "";
if (page != null &&
page.Response.IsClientConnected == false) // 灵敏中断
{
strError = "中断";
return(-1);
}
// 检索全部评注文章 一定时间范围内的?
List <string> dbnames = new List <string>();
for (int i = 0; i < this.ItemDbs.Count; i++)
{
ItemDbCfg cfg = this.ItemDbs[i];
string strDbName = cfg.CommentDbName;
if (String.IsNullOrEmpty(strDbName) == true)
{
continue;
}
dbnames.Add(strDbName);
}
DateTime now = DateTime.Now;
DateTime oneyearbefore = now - new TimeSpan(365, 0, 0, 0);
string strTime = DateTimeUtil.Rfc1123DateTimeString(oneyearbefore.ToUniversalTime());
string strQueryXml = "";
for (int i = 0; i < dbnames.Count; i++)
{
string strDbName = dbnames[i];
string strOneQueryXml = "<target list='" + strDbName + ":" + "最后修改时间'><item><word>" // <order>DESC</order>
+ strTime + "</word><match>exact</match><relation>" + StringUtil.GetXmlStringSimple(">=") + "</relation><dataType>number</dataType><maxCount>"
+ "-1" // Convert.ToString(m_nMaxLineCount)
+ "</maxCount></item><lang>zh</lang></target>";
if (i > 0)
{
strQueryXml += "<operator value='OR' />";
}
strQueryXml += strOneQueryXml;
}
if (dbnames.Count > 0)
{
strQueryXml = "<group>" + strQueryXml + "</group>";
}
RmsChannel channel = sessioninfo.Channels.GetChannel(this.WsUrl);
Debug.Assert(channel != null, "Channels.GetChannel 异常");
if (page != null)
{
page.Response.Write("--- begin search ...<br/>");
page.Response.Flush();
}
DateTime time = DateTime.Now;
long nRet = channel.DoSearch(strQueryXml,
"default",
out strError);
if (nRet == -1)
{
strError = "检索时出错: " + strError;
return(-1);
}
TimeSpan delta = DateTime.Now - time;
if (page != null)
{
page.Response.Write("search end. hitcount=" + nRet.ToString() + ", time=" + delta.ToString() + "<br/>");
page.Response.Flush();
}
if (nRet == 0)
{
return(0); // not found
}
if (page != null &&
page.Response.IsClientConnected == false) // 灵敏中断
{
strError = "中断";
return(-1);
}
if (page != null)
{
page.Response.Write("--- begin get search result ...<br/>");
page.Response.Flush();
}
time = DateTime.Now;
List <string> aPath = null;
nRet = channel.DoGetSearchResult(
"default",
-1,
"zh",
null, // stop,
out aPath,
out strError);
if (nRet == -1)
{
strError = "获得检索结果时出错: " + strError;
return(-1);
}
if (page != null)
{
delta = DateTime.Now - time;
page.Response.Write("get search result end. lines=" + aPath.Count.ToString() + ", time=" + delta.ToString() + "<br/>");
page.Response.Flush();
}
if (aPath.Count == 0)
{
strError = "获取的检索结果为空";
return(-1);
}
if (page != null &&
page.Response.IsClientConnected == false) // 灵敏中断
{
strError = "中断";
return(-1);
}
if (page != null)
{
page.Response.Write("--- begin build storage ...<br/>");
page.Response.Flush();
}
time = DateTime.Now;
this.CommentColumn.Clear(); // 清空集合
// 加入新行对象。新行对象中，只初始化了m_strRecPath参数
for (int i = 0; i < Math.Min(aPath.Count, 1000000); i++) // <Math.Min(aPath.Count, 10)
{
Line line = new Line();
// line.Container = this;
line.m_strRecPath = aPath[i];
nRet = line.InitialInfo(
page,
channel,
out strError);
if (nRet == -1)
{
return(-1);
}
if (nRet == 1)
{
return(-1); // 灵敏中断
}
TopArticleItem item = new TopArticleItem();
item.Line = line;
this.CommentColumn.Add(item);
if (page != null &&
(i % 100) == 0)
{
page.Response.Write("process " + Convert.ToString(i) + "<br/>");
page.Response.Flush();
}
}
if (page != null)
{
delta = DateTime.Now - time;
page.Response.Write("build storage end. time=" + delta.ToString() + "<br/>");
page.Response.Flush();
}
return(1);
}