// 2011/1/19
public void Dispose()
{
foreach (string key in this.Keys)
{
RmsChannel channel = (RmsChannel)this[key];
if (channel != null)
{
try
{
channel.Close();
}
catch
{
}
}
}
this.Clear();
this.AskAccountInfo = null;
}
public IEnumerator GetEnumerator()
{
string strError = "";
string strRange = "0-9999999999";
long lTotalCount = 0; // 总命中数
long lExportCount = 0;
string strTimeMessage = "";
DigitalPlatform.Stop stop = this.Stop;
StopStyle old_style = StopStyle.None;
if (stop != null)
{
old_style = stop.Style;
stop.Style = StopStyle.EnableHalfStop; // API的间隙才让中断。避免获取结果集的中途，因为中断而导致 Session 失效，结果集丢失，进而无法 Retry 获取
stop.OnStop += stop_OnStop;
}
ProgressEstimate estimate = new ProgressEstimate();
try
{
int i_path = 0;
foreach (string path in this.Paths)
{
ResPath respath = new ResPath(path);
string strQueryXml = "<target list='" + respath.Path
+ ":" + "__id'><item><word>" + strRange + "</word><match>exact</match><relation>range</relation><dataType>number</dataType><maxCount>-1</maxCount></item><lang>chi</lang></target>";
cur_channel = Channels.CreateTempChannel(respath.Url);
Debug.Assert(cur_channel != null, "Channels.GetChannel() 异常");
try
{
long lRet = cur_channel.DoSearch(strQueryXml,
"default",
out strError);
if (lRet == -1)
{
strError = "检索数据库 '" + respath.Path + "' 时出错: " + strError;
throw new Exception(strError);
}
if (lRet == 0)
{
strError = "数据库 '" + respath.Path + "' 中没有任何数据记录";
continue;
}
lTotalCount += lRet; // 总命中数
estimate.SetRange(0, lTotalCount);
if (i_path == 0)
{
estimate.StartEstimate();
}
if (stop != null)
{
stop.SetProgressRange(0, lTotalCount);
}
SearchResultLoader loader = new SearchResultLoader(cur_channel,
stop,
this.ResultSetName,
this.FormatList,
this.Lang);
loader.BatchSize = this.BatchSize;
foreach (KernelRecord record in loader)
{
if (stop != null)
{
stop.SetProgressValue(lExportCount + 1);
}
lExportCount++;
yield return(record);
}
strTimeMessage = "总共耗费时间: " + estimate.GetTotalTime().ToString();
}
finally
{
cur_channel.Close();
cur_channel = null;
}
// MessageBox.Show(this, "位于服务器 '" + respath.Url + "' 上的数据库 '" + respath.Path + "' 内共有记录 " + lTotalCount.ToString() + " 条，本次导出 " + lExportCount.ToString() + " 条。" + strTimeMessage);
i_path++;
}
}
finally
{
if (stop != null)
{
stop.Style = old_style;
stop.OnStop -= stop_OnStop;
}
}
}
