// 创建针对同一个服务器的查询 XML
public int BuildQueryXml(
int nPerMax,
string strLang,
out string strQueryXml,
out string strError)
{
strError = "";
strQueryXml = "";
int nQueryCount = 0;
for (int i = 0; i < this.Lines.Count; i++)
{
dp2QueryLine line = this.Lines[i];
if (i != 0
&& string.IsNullOrEmpty(line.WordString) == true
&& line.MatchStyleString != "空值")
continue;
if (string.IsNullOrEmpty(line.DbNameString) == true)
{
strError = "第 " + (i + 1).ToString() + " 行：尚未指定数据库名";
return -1;
}
if (string.IsNullOrEmpty(line.FromString) == true)
{
strError = "第 " + (i + 1).ToString() + " 行：尚未指定检索途径";
return -1;
}
if (string.IsNullOrEmpty(line.MatchStyleString) == true)
{
strError = "第 " + (i + 1).ToString() + " 行：尚未指定匹配方式";
return -1;
}
string strMatchStyle = GetMatchStyle(line.MatchStyleString);
if (strMatchStyle == "null")
{
if (string.IsNullOrEmpty(line.WordString) == false)
{
strError = "第 " + (i + 1).ToString() + " 行：要进行(匹配方式为)空值的检索，请保持该行的检索词为空";
return -1;
}
strMatchStyle = "exact";
}
string strFromStyles = "";
if (this.GetFromStyle != null)
{
GetFromStyleArgs e = new GetFromStyleArgs();
e.FromCaption = line.FromString;
this.GetFromStyle(line, e);
strFromStyles = e.FromStyles;
}
string strRelation = "=";
string strDataType = "string";
if (line.FromString == "__id")
{
// 如果为范围式
if (line.WordString.IndexOfAny(new char[] { '-', '~' }) != -1)
{
strRelation = "draw";
strDataType = "number";
}
else if (String.IsNullOrEmpty(line.WordString) == false)
{
strDataType = "number";
}
}
else if (StringUtil.IsInList("_time", strFromStyles) == true)
{
// 如果为范围式
if (line.WordString.IndexOf("~") != -1)
{
strRelation = "range";
strDataType = "number";
}
else
{
strDataType = "number";
// 如果检索词为空，并且匹配方式为前方一致、中间一致、后方一致，那么认为这是意图要命中全部记录
// 注意：如果检索词为空，并且匹配方式为精确一致，则需要认为是获取空值，也就是不存在对应检索点的记录
if (strMatchStyle != "exact" && string.IsNullOrEmpty(line.WordString) == true)
{
strMatchStyle = "exact";
strRelation = "range";
line.WordString = "~";
}
}
// 最后统一修改为exact。不能在一开始修改，因为strMatchStyle值还有帮助判断的作用
strMatchStyle = "exact";
}
string strFromList = BuildFromList(line.DbNameString, line.FromString);
string strOneQueryXml = "<target list='"
+ StringUtil.GetXmlStringSimple(strFromList)
+ "'><item>"
+ "<word>"
+ StringUtil.GetXmlStringSimple(line.WordString)
+ "</word><match>" + strMatchStyle + "</match><relation>" + strRelation + "</relation><dataType>" + strDataType + "</dataType><maxCount>" + nPerMax.ToString() + "</maxCount></item><lang>" + strLang + "</lang></target>";
if (string.IsNullOrEmpty(strQueryXml) == false)
strQueryXml += "<operator value='" + line.LogicOperator + "'/>"; ;
strQueryXml += strOneQueryXml;
nQueryCount++;
}
if (nQueryCount > 1)
strQueryXml = "<group>" + strQueryXml + "</group>";
return 0;
}
private void dp2QueryControl1_GetFromStyle(object sender, GetFromStyleArgs e)
{
e.FromStyles = this.MainForm.GetBiblioFromStyle(e.FromCaption);
}