// 把读者记录保存(更新)到本地数据库
// result.Value
// -1 出错
// 0 没有发生修改
// 1 发生了创建或者修改
public static NormalResult UpdateLocalPatronRecord(
GetReaderInfoResult get_result,
DateTime lastWriteTime)
{
using (BiblioCacheContext context = new BiblioCacheContext())
{
if (_cacheDbCreated == false)
{
context.Database.EnsureCreated();
_cacheDbCreated = true;
}
XmlDocument dom = new XmlDocument();
try
{
dom.LoadXml(get_result.ReaderXml);
}
catch (Exception ex)
{
return(new NormalResult
{
Value = -1,
ErrorInfo = $"读者记录装载进入 XMLDOM 时出错:{ex.Message}",
ErrorCode = "loadXmlError"
});
}
/*
* string pii = DomUtil.GetElementText(dom.DocumentElement, "barcode");
* if (string.IsNullOrEmpty(pii))
* pii = "@refID:" + DomUtil.GetElementText(dom.DocumentElement, "refID");
*/
string pii = GetPii(dom);
var patron = context.Patrons
.Where(o => o.PII == pii)
.FirstOrDefault();
if (patron != null)
{
// 如果已经存在的读者记录比打算写入的要新，则放弃写入
if (patron.LastWriteTime > lastWriteTime)
{
return new NormalResult {
Value = 0
}
}
;
Set(patron, dom);
context.Patrons.Update(patron);
}
else
{
patron = new PatronItem
{
PII = pii?.ToUpper(),
};
Set(patron, dom);
context.Patrons.Add(patron);
}
context.SaveChanges();
return(new NormalResult {
Value = 1
});
}
void Set(PatronItem patron, XmlDocument dom)
{
string cardNumber = DomUtil.GetElementText(dom.DocumentElement, "cardNumber");
cardNumber = cardNumber.ToUpper();
if (string.IsNullOrEmpty(cardNumber) == false)
{
cardNumber = "," + cardNumber + ",";
}
if (get_result.RecPath != null)
{
patron.RecPath = get_result.RecPath;
}
patron.Bindings = cardNumber;
patron.Xml = get_result.ReaderXml;
patron.Timestamp = get_result.Timestamp;
patron.LastWriteTime = lastWriteTime;
}
}
// 填充读者信息的其他字段(第二阶段)
async Task <NormalResult> FillPatronDetail(bool force = false)
{
// 已经填充过了
if (_patron.PatronName != null &&
force == false)
{
return(new NormalResult());
}
string pii = _patron.PII;
if (string.IsNullOrEmpty(pii))
{
pii = _patron.UID;
}
if (string.IsNullOrEmpty(pii))
{
return(new NormalResult());
}
// return.Value:
// -1 出错
// 0 读者记录没有找到
// 1 成功
GetReaderInfoResult result = await
Task <GetReaderInfoResult> .Run(() =>
{
return(GetReaderInfo(pii));
});
if (result.Value != 1)
{
string error = $"读者 '{pii}': {result.ErrorInfo}";
SetPatronError("getreaderinfo", error);
return(new NormalResult {
Value = -1, ErrorInfo = error
});
}
SetPatronError("getreaderinfo", "");
if (string.IsNullOrEmpty(_patron.State) == true)
{
OpenDoor();
}
if (force)
{
_patron.PhotoPath = "";
}
// string old_photopath = _patron.PhotoPath;
Application.Current.Dispatcher.Invoke(new Action(() =>
{
_patron.SetPatronXml(result.RecPath, result.ReaderXml, result.Timestamp);
this.patronControl.SetBorrowed(result.ReaderXml);
}));
// 显示在借图书列表
List <Entity> entities = new List <Entity>();
foreach (Entity entity in this.patronControl.BorrowedEntities)
{
entities.Add(entity);
}
if (entities.Count > 0)
{
try
{
BaseChannel <IRfid> channel = RfidManager.GetChannel();
try
{
await FillBookFields(channel, entities, new CancellationToken());
}
finally
{
RfidManager.ReturnChannel(channel);
}
}
catch (Exception ex)
{
string error = $"填充读者信息时出现异常: {ex.Message}";
SetGlobalError("rfid", error);
return(new NormalResult {
Value = -1, ErrorInfo = error
});
}
}
#if NO
// 装载图象
if (old_photopath != _patron.PhotoPath)
{
Task.Run(() => {
LoadPhoto(_patron.PhotoPath);
});
}
#endif
return(new NormalResult());
}
