// TODO: 本函数最好放在一个工作线程内执行
// Form Close 的时候要及时中断工作线程
void SearchAndResponse(SearchRequest searchParam)
{
if (searchParam.Operation == "getPatronInfo")
{
GetPatronInfo(searchParam);
return;
}
string strError = "";
IList <DigitalPlatform.Message.Record> records = new List <DigitalPlatform.Message.Record>();
string strResultSetName = searchParam.ResultSetName;
if (string.IsNullOrEmpty(strResultSetName) == true)
{
strResultSetName = "default";
}
else
{
strResultSetName = "#" + strResultSetName; // 如果请求方指定了结果集名，则在 dp2library 中处理为全局结果集名
}
LibraryChannel channel = GetChannel();
try
{
string strQueryXml = "";
long lRet = 0;
if (searchParam.QueryWord == "!getResult")
{
lRet = -1;
}
else
{
if (searchParam.Operation == "searchBiblio")
{
lRet = channel.SearchBiblio(// null,
searchParam.DbNameList,
searchParam.QueryWord,
(int)searchParam.MaxResults,
searchParam.UseList,
searchParam.MatchStyle,
"zh",
strResultSetName,
"", // strSearchStyle
"", // strOutputStyle
out strQueryXml,
out strError);
}
else if (searchParam.Operation == "searchPatron")
{
lRet = channel.SearchReader(// null,
searchParam.DbNameList,
searchParam.QueryWord,
(int)searchParam.MaxResults,
searchParam.UseList,
searchParam.MatchStyle,
"zh",
strResultSetName,
"",
out strError);
}
else
{
lRet = -1;
strError = "无法识别的 Operation 值 '" + searchParam.Operation + "'";
}
if (lRet == -1 || lRet == 0)
{
if (lRet == 0 ||
(lRet == -1 && channel.ErrorCode == DigitalPlatform.LibraryClient.localhost.ErrorCode.NotFound))
{
// 没有命中
ResponseSearch(
searchParam.TaskID,
0,
0,
records,
strError); // 出错信息大概为 not found。
return;
}
goto ERROR1;
}
}
{
long lHitCount = lRet;
if (searchParam.Count == 0)
{
// 返回命中数
ResponseSearch(
searchParam.TaskID,
lHitCount,
0,
records,
"本次没有返回任何记录");
return;
}
long lStart = searchParam.Start;
long lPerCount = searchParam.Count; // 本次拟返回的个数
if (lHitCount != -1)
{
if (lPerCount == -1)
{
lPerCount = lHitCount - lStart;
}
else
{
lPerCount = Math.Min(lPerCount, lHitCount - lStart);
}
if (lPerCount <= 0)
{
strError = "命中结果总数为 " + lHitCount + "，取结果开始位置为 " + lStart + "，它已超出结果集范围";
goto ERROR1;
}
}
DigitalPlatform.LibraryClient.localhost.Record[] searchresults = null;
// 装入浏览格式
for (; ;)
{
string strBrowseStyle = "id,xml";
lRet = channel.GetSearchResult(
// null,
strResultSetName,
lStart,
lPerCount,
strBrowseStyle,
"zh", // this.Lang,
out searchresults,
out strError);
if (lRet == -1)
{
goto ERROR1;
}
if (searchresults.Length == 0)
{
strError = "GetSearchResult() searchResult empty";
goto ERROR1;
}
if (lHitCount == -1)
{
lHitCount = lRet; // 延迟得到命中总数
}
records.Clear();
foreach (DigitalPlatform.LibraryClient.localhost.Record record in searchresults)
{
DigitalPlatform.Message.Record biblio = new DigitalPlatform.Message.Record();
biblio.RecPath = record.Path;
biblio.Data = record.RecordBody.Xml;
records.Add(biblio);
}
ResponseSearch(
searchParam.TaskID,
lHitCount,
lStart,
records,
"");
lStart += searchresults.Length;
if (lPerCount != -1)
{
lPerCount -= searchresults.Length;
}
if (lStart >= lHitCount || (lPerCount <= 0 && lPerCount != -1))
{
break;
}
}
}
}
catch (Exception ex)
{
AddErrorLine("SearchAndResponse() 出现异常: " + ex.Message);
strError = ex.Message;
goto ERROR1;
}
finally
{
this._channelPool.ReturnChannel(channel);
}
this.AddInfoLine("search and response end");
return;
ERROR1:
// 报错
ResponseSearch(
searchParam.TaskID,
-1,
0,
records,
strError);
}
void GetPatronInfo(SearchRequest searchParam)
{
string strError = "";
IList <DigitalPlatform.Message.Record> records = new List <DigitalPlatform.Message.Record>();
if (string.IsNullOrEmpty(searchParam.FormatList) == true)
{
strError = "FormatList 不应为空";
goto ERROR1;
}
LibraryChannel channel = GetChannel();
try
{
string[] results = null;
string strRecPath = "";
byte[] baTimestamp = null;
long lRet = channel.GetReaderInfo(// null,
searchParam.QueryWord,
searchParam.FormatList,
out results,
out strRecPath,
out baTimestamp,
out strError);
if (lRet == -1 || lRet == 0)
{
if (lRet == 0 ||
(lRet == -1 && channel.ErrorCode == DigitalPlatform.LibraryClient.localhost.ErrorCode.NotFound))
{
// 没有命中
ResponseSearch(
searchParam.TaskID,
0,
0,
records,
strError); // 出错信息大概为 not found。
return;
}
goto ERROR1;
}
if (results == null)
{
results = new string[0];
}
records.Clear();
string[] formats = searchParam.FormatList.Split(new char[] { ',' });
int i = 0;
foreach (string result in results)
{
DigitalPlatform.Message.Record biblio = new DigitalPlatform.Message.Record();
biblio.RecPath = strRecPath;
biblio.Data = result;
biblio.Format = formats[i];
records.Add(biblio);
i++;
}
ResponseSearch(
searchParam.TaskID,
records.Count, // lHitCount,
0, // lStart,
records,
"");
}
catch (Exception ex)
{
AddErrorLine("GetPatronInfo() 出现异常: " + ex.Message);
strError = "GetPatronInfo() 异常：" + ExceptionUtil.GetDebugText(ex);
goto ERROR1;
}
finally
{
this._channelPool.ReturnChannel(channel);
}
this.AddInfoLine("search and response end");
return;
ERROR1:
// 报错
ResponseSearch(
searchParam.TaskID,
-1,
0,
records,
strError);
}