int _fetched = 0; // 已经 Present 获取的条数
private async void button_search_Click(object sender, EventArgs e)
{
string strError = "";
EnableControls(false);
try
{
this.ClearHtml();
_resultCount = 0;
_fetched = 0;
this.button_nextBatch.Text = ">>";
// 如果 targetInfo 没有变化，就持续使用
if (_targetInfo.HostName != this.textBox_serverAddr.Text ||
_targetInfo.Port != Convert.ToInt32(this.textBox_serverPort.Text) ||
string.Join(",", _targetInfo.DbNames) != string.Join(",", new string[] { this.textBox_database.Text }) ||
_targetInfo.AuthenticationMethod != GetAuthentcationMethod() ||
_targetInfo.UserName != this.textBox_userName.Text ||
_targetInfo.Password != this.textBox_password.Text)
{
_targetInfo = new TargetInfo
{
HostName = this.textBox_serverAddr.Text,
Port = Convert.ToInt32(this.textBox_serverPort.Text),
DbNames = new string[] { this.textBox_database.Text },
AuthenticationMethod = GetAuthentcationMethod(),
GroupID = this.textBox_groupID.Text,
UserName = this.textBox_userName.Text,
Password = this.textBox_password.Text,
};
_zclient.CloseConnection();
}
IsbnConvertInfo isbnconvertinfo = new IsbnConvertInfo
{
IsbnSplitter = this._isbnSplitter,
ConvertStyle =
(_targetInfo.IsbnAddHyphen == true ? "addhyphen," : "")
+ (_targetInfo.IsbnRemoveHyphen == true ? "removehyphen," : "")
+ (_targetInfo.IsbnForce10 == true ? "force10," : "")
+ (_targetInfo.IsbnForce13 == true ? "force13," : "")
+ (_targetInfo.IsbnWild == true ? "wild," : "")
};
// 构造 XML 检索式
string strQueryXml = BuildQueryXml();
// 将 XML 检索式变化为简明格式检索式
int nRet = ZClient.GetQueryString(
this._useList,
strQueryXml,
isbnconvertinfo,
out string strQueryString,
out strError);
if (nRet == -1)
{
goto ERROR1;
}
{
// return Value:
// -1 出错
// 0 成功
// 1 调用前已经是初始化过的状态，本次没有进行初始化
InitialResult result = await _zclient.TryInitialize(_targetInfo);
if (result.Value == -1)
{
strError = "Initialize error: " + result.ErrorInfo;
goto ERROR1;
}
/*
* this.Invoke(
* (Action)(() => MessageBox.Show(this, result.ToString()))
* );
*/
}
SearchResult search_result = await _zclient.Search(
strQueryString,
_targetInfo.DefaultQueryTermEncoding,
_targetInfo.DbNames,
_targetInfo.PreferredRecordSyntax,
"default");
this.AppendHtml("<div class='debug green' >检索共命中记录 " + search_result.ResultCount + "</div>");
#if NO
this.Invoke(
(Action)(() => MessageBox.Show(this, search_result.ToString()))
);
#endif
_resultCount = search_result.ResultCount;
#if NO
if (_resultCount - _fetched > 0)
{
this.button_nextBatch.Enabled = true;
}
else
{
this.button_nextBatch.Enabled = false;
}
#endif
await FetchRecords();
return;
}
finally
{
EnableControls(true);
}
ERROR1:
MessageBox.Show(this, strError);
}
int _fetched = 0; // 已经 Present 获取的条数
private async void button_search_Click(object sender, EventArgs e)
{
this.toolStripStatusLabel1.Text = "";
string strError = "";
this.ClearHtml();
_resultCount = 0;
_fetched = 0;
EnableControls(false);
try
{
// 如果 _targetInfo 涉及到的信息字段对比环境没有变化，就持续使用
if (_targetInfo.HostName != this.textBox_serverAddr.Text ||
_targetInfo.Port != Convert.ToInt32(this.textBox_serverPort.Text) ||
string.Join(",", _targetInfo.DbNames) != this.textBox_database.Text ||
_targetInfo.AuthenticationMethod != GetAuthentcationMethod() ||
_targetInfo.UserName != this.textBox_userName.Text ||
_targetInfo.Password != this.textBox_password.Text)
{
_targetInfo = new TargetInfo
{
HostName = this.textBox_serverAddr.Text,
Port = Convert.ToInt32(this.textBox_serverPort.Text),
DbNames = StringUtil.SplitList(this.textBox_database.Text).ToArray(),
AuthenticationMethod = GetAuthentcationMethod(),
GroupID = this.textBox_groupID.Text,
UserName = this.textBox_userName.Text,
Password = this.textBox_password.Text,
};
_zclient.CloseConnection();
}
IsbnConvertInfo isbnconvertinfo = new IsbnConvertInfo
{
IsbnSplitter = this._isbnSplitter,
ConvertStyle =
(_targetInfo.IsbnAddHyphen == true ? "addhyphen," : "")
+ (_targetInfo.IsbnRemoveHyphen == true ? "removehyphen," : "")
+ (_targetInfo.IsbnForce10 == true ? "force10," : "")
+ (_targetInfo.IsbnForce13 == true ? "force13," : "")
+ (_targetInfo.IsbnWild == true ? "wild," : "")
};
string strQueryString = "";
if (this.radioButton_query_easy.Checked)
{
// 创建只包含一个检索词的简单 XML 检索式
// 注：这种 XML 检索式不是 Z39.50 函数库必需的。只是用它来方便构造 API 检索式的过程
string strQueryXml = BuildQueryXml();
// 将 XML 检索式变化为 API 检索式
Result result = ZClient.ConvertQueryString(
this._useList,
strQueryXml,
isbnconvertinfo,
out strQueryString);
if (result.Value == -1)
{
strError = result.ErrorInfo;
goto ERROR1;
}
this.textBox_queryString.Text = strQueryString; // 便于调试观察
}
else
{
strQueryString = this.textBox_queryString.Text;
}
REDO_SEARCH:
{
// return Value:
// -1 出错
// 0 成功
// 1 调用前已经是初始化过的状态，本次没有进行初始化
// InitialResult result = _zclient.TryInitialize(_targetInfo).GetAwaiter().GetResult();
// InitialResult result = _zclient.TryInitialize(_targetInfo).Result;
InitialResult result = await _zclient.TryInitialize(_targetInfo);
if (result.Value == -1)
{
strError = "Initialize error: " + result.ErrorInfo;
goto ERROR1;
}
/*
* this.Invoke(
* (Action)(() => MessageBox.Show(this, result.ToString()))
* );
*/
}
// result.Value:
// -1 error
// 0 fail
// 1 succeed
// result.ResultCount:
// 命中结果集内记录条数 (当 result.Value 为 1 时)
SearchResult search_result = await _zclient.Search(
strQueryString,
_targetInfo.DefaultQueryTermEncoding,
_targetInfo.DbNames,
_targetInfo.PreferredRecordSyntax,
"default");
if (search_result.Value == -1 || search_result.Value == 0)
{
this.AppendHtml("<div class='debug error' >检索出错 " + search_result.ErrorInfo + "</div>");
if (search_result.ErrorCode == "ConnectionAborted")
{
this.AppendHtml("<div class='debug error' >自动重试检索 ...</div>");
goto REDO_SEARCH;
}
}
else
{
this.AppendHtml("<div class='debug green' >检索共命中记录 " + search_result.ResultCount + "</div>");
}
#if NO
this.Invoke(
(Action)(() => MessageBox.Show(this, search_result.ToString()))
);
#endif
_resultCount = search_result.ResultCount;
#if NO
if (_resultCount - _fetched > 0)
{
this.button_nextBatch.Enabled = true;
}
else
{
this.button_nextBatch.Enabled = false;
}
#endif
await FetchRecords(_targetInfo);
return;
}
finally
{
EnableControls(true);
}
ERROR1:
this.AppendHtml("<div class='debug error' >" + HttpUtility.HtmlEncode(strError) + "</div>");
MessageBox.Show(this, strError);
}
// 针对一个特定 Z30.50 服务器发起检索
async Task <NormalResult> SearchOne(
ZClientChannel channel,
UseCollection useList,
IsbnSplitter isbnSplitter,
string strQueryWord,
int nMax,
string strFromStyle,
string strMatchStyle,
delegate_searchCompleted searchCompleted,
delegate_presentCompleted presentCompleted)
{
var ok = channel.Enter();
try
{
if (ok == false)
{
return(new NormalResult
{
Value = -1,
ErrorInfo = "通道已被占用",
ErrorCode = "channelInUse"
});
}
var _targetInfo = channel.TargetInfo;
IsbnConvertInfo isbnconvertinfo = new IsbnConvertInfo
{
IsbnSplitter = isbnSplitter,
ConvertStyle =
(_targetInfo.IsbnAddHyphen == true ? "addhyphen," : "")
+ (_targetInfo.IsbnRemoveHyphen == true ? "removehyphen," : "")
+ (_targetInfo.IsbnForce10 == true ? "force10," : "")
+ (_targetInfo.IsbnForce13 == true ? "force13," : "")
+ (_targetInfo.IsbnWild == true ? "wild," : "")
// TODO:
+ (_targetInfo.IssnForce8 == true ? "issnforce8," : "")
};
string strQueryString = "";
{
// 创建只包含一个检索词的简单 XML 检索式
// 注：这种 XML 检索式不是 Z39.50 函数库必需的。只是用它来方便构造 API 检索式的过程
string strQueryXml = BuildQueryXml(strQueryWord, strFromStyle);
// 将 XML 检索式变化为 API 检索式
var result = ZClient.ConvertQueryString(
useList,
strQueryXml,
isbnconvertinfo,
out strQueryString);
if (result.Value == -1)
{
searchCompleted?.Invoke(channel, new SearchResult(result));
var final_result = new NormalResult {
Value = result.Value, ErrorInfo = result.ErrorInfo
};
if (result.ErrorCode == "notFound")
{
final_result.ErrorCode = "useNotFound";
}
return(final_result);
}
}
REDO_SEARCH:
{
// return Value:
// -1 出错
// 0 成功
// 1 调用前已经是初始化过的状态，本次没有进行初始化
// InitialResult result = _zclient.TryInitialize(_targetInfo).GetAwaiter().GetResult();
// InitialResult result = _zclient.TryInitialize(_targetInfo).Result;
InitialResult result = await channel.ZClient.TryInitialize(_targetInfo);
if (result.Value == -1)
{
searchCompleted?.Invoke(channel, new SearchResult(result));
// TODO: 是否继续向后检索其他 Z39.50 服务器?
return(new NormalResult {
Value = -1, ErrorInfo = "Initialize error: " + result.ErrorInfo
});
}
}
// result.Value:
// -1 error
// 0 fail
// 1 succeed
// result.ResultCount:
// 命中结果集内记录条数 (当 result.Value 为 1 时)
SearchResult search_result = await channel.ZClient.Search(
strQueryString,
_targetInfo.DefaultQueryTermEncoding,
_targetInfo.DbNames,
_targetInfo.PreferredRecordSyntax,
"default");
if (search_result.Value == -1 || search_result.Value == 0)
{
if (search_result.ErrorCode == "ConnectionAborted")
{
// 自动重试检索
goto REDO_SEARCH;
}
}
searchCompleted?.Invoke(channel, search_result);
channel._resultCount = search_result.ResultCount;
if (search_result.Value == -1 ||
search_result.Value == 0 ||
search_result.ResultCount == 0)
{
return(new NormalResult()); // continue
}
var present_result = await _fetchRecords(channel, PresentBatchSize /*10*/);
presentCompleted?.Invoke(channel, present_result);
if (present_result.Value != -1)
{
channel._fetched += present_result.Records.Count;
}
return(new NormalResult());
}
finally
{
channel.Exit();
}
}
