// 处理一小批指纹数据的装入
// parameters:
static void GetSomeFingerprintData(
LibraryChannel channel,
List <string> lines,
CancellationToken token,
out List <DigitalPlatform.LibraryClient.localhost.Record> records)
{
// strError = "";
records = new List <DigitalPlatform.LibraryClient.localhost.Record>();
for (; ;)
{
token.ThrowIfCancellationRequested();
DigitalPlatform.LibraryClient.localhost.Record[] searchresults = null;
string[] paths = new string[lines.Count];
lines.CopyTo(paths);
REDO_GETRECORDS:
long lRet = channel.GetBrowseRecords(
null,
paths,
"id,cols,format:cfgs/browse_fingerprint",
out searchresults,
out string strError);
if (lRet == -1)
{
#if NO
DialogResult temp_result = MessageBox.Show(this,
strError + "\r\n\r\n是否重试?",
"ReaderSearchForm",
MessageBoxButtons.RetryCancel,
MessageBoxIcon.Question,
MessageBoxDefaultButton.Button1);
if (temp_result == DialogResult.Retry)
{
goto REDO_GETRECORDS;
}
return(-1);
#endif
if (Prompt != null)
{
MessagePromptEventArgs e = new MessagePromptEventArgs
{
// e.MessageText = "获得书目记录 '"+strCommand+"' ("+StringUtil.MakePathList(format_list)+") 时发生错误： " + strError;
MessageText = strError + "\r\n\r\n是否重试?",
Actions = "yes,no,cancel"
};
Prompt(channel, e);
if (e.ResultAction == "cancel")
{
throw new ChannelException(channel.ErrorCode, strError);
}
else if (e.ResultAction == "yes")
{
goto REDO_GETRECORDS;
}
else
{
// no 也是抛出异常。因为继续下一批代价太大
throw new ChannelException(channel.ErrorCode, strError);
}
}
else
{
throw new ChannelException(channel.ErrorCode, strError);
}
}
records.AddRange(searchresults);
// 去掉已经做过的一部分
lines.RemoveRange(0, searchresults.Length);
if (lines.Count == 0)
{
break;
}
}
}
int GetBrowseCols(List <string> pathlist,
List <ListViewItem> itemlist,
out string strError)
{
strError = "";
EnableControls(false);
LibraryChannel channel = this.GetChannel();
stop.OnStop += new StopEventHandler(this.DoStop);
stop.Initial("正在填充浏览列 ...");
stop.BeginLoop();
this.Update();
Program.MainForm.Update();
try
{
int nStart = 0;
int nCount = 0;
for (; ;)
{
nCount = pathlist.Count - nStart;
if (nCount > 100)
{
nCount = 100;
}
if (nCount <= 0)
{
break;
}
Application.DoEvents(); // 出让界面控制权
if (stop != null && stop.State != 0)
{
strError = "用户中断";
return(-1);
}
stop.SetMessage("正在装入浏览信息 " + (nStart + 1).ToString() + " - " + (nStart + nCount).ToString());
string[] paths = new string[nCount];
pathlist.CopyTo(nStart, paths, 0, nCount);
Record[] searchresults = null;
long lRet = channel.GetBrowseRecords(
this.stop,
paths,
"id,cols",
out searchresults,
out strError);
if (lRet == -1)
{
return(-1);
}
if (searchresults == null || searchresults.Length == 0)
{
strError = "searchresults == null || searchresults.Length == 0";
return(-1);
}
for (int i = 0; i < searchresults.Length; i++)
{
Record record = searchresults[i];
ListViewUtil.EnsureColumns(this.listView_browse,
2 + (record.Cols == null ? 0 : record.Cols.Length),
200);
ListViewItem item = itemlist[nStart + i];
item.Text = record.Path;
if (record.Cols != null)
{
for (int j = 0; j < record.Cols.Length; j++)
{
item.SubItems.Add(record.Cols[j]);
}
}
}
nStart += searchresults.Length;
}
}
finally
{
stop.EndLoop();
stop.OnStop -= new StopEventHandler(this.DoStop);
stop.Initial("");
this.ReturnChannel(channel);
EnableControls(true);
}
return(0);
}
public IEnumerator GetEnumerator()
{
// 首先按照服务器名的不同，划分为若干个区段
List <OneBatch> batchs = new List <OneBatch>();
{
OneBatch batch = new OneBatch();
for (int index = 0; index < m_recpaths.Count; index++)
{
string s = m_recpaths[index];
// 解析记录路径
string strServerName = "";
string strPurePath = "";
dp2SearchForm.ParseRecPath(s,
out strServerName,
out strPurePath);
// 服务器名发生变化了
if (batch.Count > 0 && strServerName != batch.ServerName)
{
batchs.Add(batch);
batch = new OneBatch();
batch.ServerName = strServerName;
batch.Add(strPurePath);
continue;
}
if (string.IsNullOrEmpty(batch.ServerName) == true)
{
batch.ServerName = strServerName;
}
batch.Add(strPurePath);
}
if (batch.Count > 0)
{
batchs.Add(batch);
}
}
// 进行循环获取
foreach (OneBatch temp in batchs)
{
// 获得server url
dp2Server server = this.Servers.GetServerByName(temp.ServerName);
if (server == null)
{
string strError = "名为 '" + temp.ServerName + "' 的服务器在检索窗中尚未定义...";
throw new Exception(strError);
}
string strServerUrl = server.Url;
LibraryChannel channel = this.ChannelManager.GetChannel(strServerUrl);
try
{
List <string> batch = new List <string>();
for (; batch.Count > 0 || temp.Count > 0;)
{
if (batch.Count == 0)
{
for (int i = 0; i < Math.Min(temp.Count, 100); i++)
{
batch.Add(temp[i]);
}
temp.RemoveRange(0, batch.Count);
}
// 每100个一批
if (batch.Count > 0)
{
REDO:
string[] paths = new string[batch.Count];
batch.CopyTo(paths);
DigitalPlatform.LibraryClient.localhost.Record[] searchresults = null;
string strError = "";
long lRet = channel.GetBrowseRecords(
this.Stop,
paths,
"id,cols",
out searchresults,
out strError);
if (lRet == -1)
{
throw new Exception(strError);
}
if (searchresults == null)
{
strError = "searchresults == null";
throw new Exception(strError);
}
for (int i = 0; i < searchresults.Length; i++)
{
DigitalPlatform.LibraryClient.localhost.Record record = searchresults[i];
Debug.Assert(batch[i] == record.Path, "");
// 包含服务器名
record.Path = record.Path + "@" + temp.ServerName;
yield return(record);
}
CONTINUE:
if (batch.Count > searchresults.Length)
{
// 有本次没有获取到的记录
batch.RemoveRange(0, searchresults.Length);
/*
* if (index == m_recpaths.Count - 1)
* goto REDO; // 当前已经是最后一轮了，需要继续做完
* */
// 否则可以留给下一轮处理
}
else
{
batch.Clear();
}
}
}
//
}
finally
{
Program.MainForm.ReturnChannel(channel);
}
}
}
/*
Control FindControl(string strID)
{
foreach (Control control in this.Controls)
{
if (control.ID == strID)
return control;
}
return null;
}
*/
int FillBrowseCols(LibraryChannel channel,
ref ArrayList aLine,
out string strError)
{
strError = "";
string[] paths = new string[aLine.Count];
for (int i = 0; i < aLine.Count; i++)
{
paths[i] = ((string[])aLine[i])[0];
}
// TODO: 一次调用的数目不一定能满足
Record[] search_results = null;
long lRet = channel.GetBrowseRecords(
null,
paths,
"id,cols", // strStyle,
out search_results,
out strError);
if (lRet == -1)
return -1;
ArrayList results = new ArrayList();
for (int i = 0; i < search_results.Length; i++)
{
Record record = search_results[i];
string[] cols = new string[record.Cols.Length + 1];
cols[0] = record.Path;
Array.Copy(record.Cols,
0,
cols,
1,
record.Cols.Length);
results.Add(cols);
}
aLine = results;
return 0;
}
// 调用前，记录路径列已经有值
/// <summary>
/// 刷新一个浏览行。调用前，记录路径列已经有值
/// </summary>
/// <param name="channel">通讯通道</param>
/// <param name="item">浏览行 ListViewItem 对象</param>
/// <param name="strError">返回出错信息</param>
/// <returns>-1: 出错; 0: 成功</returns>
public int RefreshBrowseLine(
LibraryChannel channel,
ListViewItem item,
out string strError)
{
strError = "";
string strRecPath = ListViewUtil.GetItemText(item, 0);
string[] paths = new string[1];
paths[0] = strRecPath;
DigitalPlatform.LibraryClient.localhost.Record[] searchresults = null;
long lRet = channel.GetBrowseRecords(
this.stop,
paths,
"id,cols",
out searchresults,
out strError);
if (lRet == -1)
return -1;
if (searchresults == null || searchresults.Length == 0)
{
strError = "searchresults == null || searchresults.Length == 0";
return -1;
}
for (int i = 0; i < searchresults[0].Cols.Length; i++)
{
ListViewUtil.ChangeItemText(item,
i + 1,
searchresults[0].Cols[i]);
}
return 0;
}
