// 获得一条记录的 MARC 格式 OID
static string GetMarcSyntaxOID(DigitalPlatform.LibraryClient.localhost.Record dp2library_record)
{
if (dp2library_record.RecordBody == null)
{
return(null);
}
if (string.IsNullOrEmpty(dp2library_record.RecordBody.Xml))
{
return(null);
}
// return:
// -1 出错
// 0 正常
int nRet = MarcUtil.GetMarcSyntax(dp2library_record.RecordBody.Xml,
out string strOutMarcSyntax,
out string strError);
if (nRet == -1)
{
throw new Exception("获得 MARCXML 记录的 MARC Syntax 时出错: " + strError);
}
if (strOutMarcSyntax == "unimarc")
{
return("1.2.840.10003.5.1");
}
if (strOutMarcSyntax == "usmarc")
{
return("1.2.840.10003.5.10");
}
return(null);
}
public IEnumerator GetEnumerator()
{
List <string> batch = new List <string>();
for (int index = 0; index < m_recpaths.Count; index++)
{
string s = m_recpaths[index];
batch.Add(s);
// 每100个一批，或者最后一次
if (batch.Count >= 100 ||
(index == m_recpaths.Count - 1 && batch.Count > 0))
{
REDO:
#if NO
string[] paths = new string[batch.Count];
batch.CopyTo(paths);
#endif
string [] paths = batch.ToArray();
DigitalPlatform.LibraryClient.localhost.Record[] searchresults = null;
string strError = "";
long lRet = Channel.GetBrowseRecords(
this.Stop,
paths,
this.Format, // "id,cols",
out searchresults,
out strError);
if (lRet == -1)
{
throw new Exception(strError);
}
#if NO
if (lRet == -1)
{
if (lRet == 0 && String.IsNullOrEmpty(strError) == true)
{
foreach (string path in batch)
{
DigitalPlatform.LibraryClient.localhost.Record record = new DigitalPlatform.LibraryClient.localhost.Record();
record.Path = path;
// TODO: 是否需要设置 ErrorCode ?
yield return(record);
}
goto CONTINUE;
}
// 如果results.Length表现正常，其实还可以继续处理?
if (searchresults != null && searchresults.Length > 0)
{
}
else
{
strError = "获得浏览记录 '" + StringUtil.MakePathList(batch) + "' 时发生错误: " + strError;
throw new Exception(strError);
}
}
#endif
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];
if (batch[i] != record.Path)
{
throw new Exception("下标 " + i + " 的 batch 元素 '" + batch[i] + "' 和返回的该下标位置 GetBrowseRecords() 结果路径 '" + record.Path + "' 不匹配");
}
Debug.Assert(batch[i] == record.Path, "");
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();
}
}
}
}
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);
}
}
}
public IEnumerator GetEnumerator()
{
List <string> batch = new List <string>();
for (int index = 0; index < m_recpaths.Count; index++)
{
string s = m_recpaths[index];
batch.Add(s);
// 每100个一批，或者最后一次
if (batch.Count >= 100 ||
(index == m_recpaths.Count - 1 && batch.Count > 0))
{
REDO:
#if NO
string[] paths = new string[batch.Count];
batch.CopyTo(paths);
#endif
string[] paths = batch.ToArray();
DigitalPlatform.LibraryClient.localhost.Record[] searchresults = null;
string strError = "";
long lRet = Channel.GetBrowseRecords(
this.Stop,
paths,
this.Format, // "id,cols",
out searchresults,
out strError);
if (lRet == -1)
{
// throw new Exception(strError);
if (this.Prompt != null)
{
MessagePromptEventArgs e = new MessagePromptEventArgs();
e.MessageText = "获得浏览记录时发生错误： " + strError + "\r\npaths='" + StringUtil.MakePathList(paths) + "' (" + this.Format + ")";
e.Actions = "yes,no,cancel";
this.Prompt(this, e);
if (e.ResultAction == "cancel")
{
throw new ChannelException(Channel.ErrorCode, strError);
}
else if (e.ResultAction == "yes")
{
goto REDO;
}
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);
}
}
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];
if (batch[i] != record.Path)
{
throw new Exception("下标 " + i + " 的 batch 元素 '" + batch[i] + "' 和返回的该下标位置 GetBrowseRecords() 结果路径 '" + record.Path + "' 不匹配");
}
Debug.Assert(batch[i] == record.Path, "");
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();
}
}
}
}
// TODO: 实现简略格式和详细格式提供。简略格式可以理解为略去一些分类号主题词字段，最好用一段用户定制的脚本来进行过滤
// 获得MARC记录
// parameters:
// elementSetNames 元素集列表。每个元素集为 'B' 或 'F'，表示简略和详细格式
// bAddField901 是否加入901字段？
// return:
// -1 error
// 0 not found
// 1 found
static int GetIso2709Record(
DigitalPlatform.LibraryClient.localhost.Record dp2library_record,
List <string> elementSetNames,
bool bAddField901,
string strRemoveFields,
Encoding marcRecordEncoding,
out string strMarcSyntaxOID,
out byte[] baIso2709,
out string strError)
{
baIso2709 = null;
strError = "";
strMarcSyntaxOID = "";
// 转换为机内格式
int nRet = MarcUtil.Xml2Marc(dp2library_record.RecordBody.Xml,
true,
"",
out string strMarcSyntax,
out string strMarc,
out strError);
if (nRet == -1)
{
strError = "XML转换到MARC记录时出错: " + strError;
return(-1);
}
// 去掉记录中的 997/998
MarcRecord record = new MarcRecord(strMarc);
if (string.IsNullOrEmpty(strRemoveFields) == false)
{
List <string> field_names = StringUtil.SplitList(strRemoveFields);
foreach (string field_name in field_names)
{
if (field_name.Length != 3)
{
strError = "removeFields 定义里面出现了不是 3 字符的字段名('" + strRemoveFields + "')";
return(-1);
}
record.select("field[@name='" + field_name + "']").detach();
}
}
if (bAddField901 == true)
{
// 901 $p记录路径$t时间戳
string strContent = "$p" + dp2library_record.Path
+ "$t" + ByteArray.GetHexTimeStampString(dp2library_record.RecordBody.Timestamp);
record.setFirstField("901", " ", strContent.Replace("$", MarcQuery.SUBFLD), " ");
}
strMarc = record.Text;
// 转换为ISO2709
nRet = MarcUtil.CvtJineiToISO2709(
strMarc,
strMarcSyntax,
marcRecordEncoding,
out baIso2709,
out strError);
if (nRet == -1)
{
return(-1);
}
if (strMarcSyntax == "unimarc")
{
strMarcSyntaxOID = "1.2.840.10003.5.1";
}
if (strMarcSyntax == "usmarc")
{
strMarcSyntaxOID = "1.2.840.10003.5.10";
}
return(1);
}