// 将两个订购XML片断合并
// 当旧的和新的都是全管辖范围内，就允许新的全部替换旧的；否则只允许替换<distribute>元素内容
// parameters:
// strLibraryCodeList 当前用户管辖的分馆代码列表
// strMergedXml [out]范围订购<root>元素的InnerXml
// return:
// -1 出错
// 0 正常
// 1 发生了超越范围的修改
public static int MergeOrderNode(XmlNode exist_node,
XmlNode new_node,
string strLibraryCodeList,
out string strMergedXml,
out string strError)
{
strError = "";
strMergedXml = "";
int nRet = 0;
Debug.Assert(SessionInfo.IsGlobalUser(strLibraryCodeList) == false, "全局用户不应调用函数 MergeOrderNode()");
string strExistDistribute = DomUtil.GetElementText(exist_node, "distribute");
string strNewDistribute = DomUtil.GetElementText(new_node, "distribute");
bool bExistControlled = true;
bool bNewControlled = true;
if (string.IsNullOrEmpty(strExistDistribute) == false)
{
// 观察一个馆藏分配字符串，看看是否在当前用户管辖范围内
// return:
// -1 出错
// 0 超过管辖范围。strError中有解释
// 1 在管辖范围内
nRet = DistributeInControlled(strExistDistribute,
strLibraryCodeList,
out strError);
if (nRet == -1)
{
return(-1);
}
if (nRet == 0)
{
bExistControlled = false;
}
}
if (string.IsNullOrEmpty(strNewDistribute) == false)
{
// 观察一个馆藏分配字符串，看看是否在当前用户管辖范围内
// return:
// -1 出错
// 0 超过管辖范围。strError中有解释
// 1 在管辖范围内
nRet = DistributeInControlled(strNewDistribute,
strLibraryCodeList,
out strError);
if (nRet == -1)
{
return(-1);
}
if (nRet == 0)
{
bNewControlled = false;
}
}
if (bExistControlled == true && bNewControlled == true)
{
// 当旧的和新的都是全管辖范围内，就允许新的全部替换旧的
strMergedXml = new_node.InnerXml;
return(0);
}
string strExistCopy = DomUtil.GetElementText(exist_node, "copy");
string strExistPrice = DomUtil.GetElementText(exist_node, "price");
string strChangedCopy = DomUtil.GetElementText(new_node, "copy");
string strChangedPrice = DomUtil.GetElementText(new_node, "price");
// 比较两个复本字符串
{
ParseOldNewValue(strExistCopy,
out string strExistOldValue,
out string strExistNewValue);
ParseOldNewValue(strChangedCopy,
out string strChangedOldValue,
out string strChangedNewValue);
if (strExistOldValue != strChangedOldValue)
{
strError = "订购套数(方括号左边的部分)不允许修改。(原来='" + strExistCopy + "',新的='" + strChangedCopy + "')";
return(1);
}
// 检查验收套数的改变，是否正好和distribute字符串内的改变吻合
}
// 比较两个价格字符串
{
ParseOldNewValue(strExistPrice,
out string strExistOldValue,
out string strExistNewValue);
ParseOldNewValue(strChangedPrice,
out string strChangedOldValue,
out string strChangedNewValue);
// 避免用 == 判断。用 IsEqual 判断，可以把 CNY10.00 和 10.00 视作等同
if (PriceUtil.IsEqual(strExistOldValue, strChangedOldValue) == false)
{
strError = "订购价(方括号左边的部分)不允许修改。(原来='" + strExistPrice + "',新的='" + strChangedPrice + "')";
return(1);
}
if (PriceUtil.IsEqual(strExistNewValue, strChangedNewValue) == false)
{
strError = "验收价(方括号中的部分)不允许修改。(原来='" + strExistPrice + "',新的='" + strChangedPrice + "')";
return(1);
}
}
LocationCollection new_locations = new LocationCollection();
nRet = new_locations.Build(strNewDistribute, out strError);
if (nRet == -1)
{
strError = "馆藏分配字符串 '" + strNewDistribute + "' 格式不正确";
return(-1);
}
LocationCollection exist_locations = new LocationCollection();
nRet = exist_locations.Build(strExistDistribute, out strError);
if (nRet == -1)
{
strError = "馆藏分配字符串 '" + strExistDistribute + "' 格式不正确";
return(-1);
}
if (exist_locations.Count != new_locations.Count)
{
strError = "馆藏分配事项个数发生了改变(原来=" + exist_locations.Count.ToString() + "，新的=" + new_locations.Count.ToString() + ")";
return(1);
}
for (int i = 0; i < exist_locations.Count; i++)
{
Location exist_location = exist_locations[i];
Location new_location = new_locations[i];
if (exist_location.Name != new_location.Name)
{
// 进一步检查是否馆代码部分改变了
// 解析
LibraryApplication.ParseCalendarName(exist_location.Name,
out string strCode1,
out string strPureName);
LibraryApplication.ParseCalendarName(new_location.Name,
out string strCode2,
out strPureName);
// 只要馆代码部分不改变即可
if (strCode1 != strCode2)
{
strError = "第 " + (i + 1).ToString() + " 个馆藏分配事项的名字(的馆代码部分)发生改变 (原来='" + exist_location.Name + "',新的='" + new_location.Name + "')";
return(1);
}
}
if (exist_location.RefID != new_location.RefID)
{
// 解析
LibraryApplication.ParseCalendarName(exist_location.Name,
out string strLibraryCode,
out string strPureName);
if (StringUtil.IsInList(strLibraryCode, strLibraryCodeList) == false)
{
strError = "馆代码 '" + strLibraryCode + "' 不在范围 '" + strLibraryCodeList + "' 内，不允许进行收登操作。";
return(1);
}
}
}
// 将旧的XML片断装入，只修改里面的三个元素值。这样可以保证三个元素以外的原记录内容不被修改
XmlDocument dom = new XmlDocument();
try
{
dom.LoadXml(exist_node.OuterXml);
}
catch (Exception ex)
{
strError = "exist_node.OuterXml装入XMLDOM失败: " + ex.Message;
return(-1);
}
DomUtil.SetElementText(dom.DocumentElement, "copy", strChangedCopy);
DomUtil.SetElementText(dom.DocumentElement, "price", strChangedPrice);
DomUtil.SetElementText(dom.DocumentElement, "distribute", strNewDistribute);
strMergedXml = dom.DocumentElement.InnerXml;
return(0);
}