// 合并检索点
// parameters:
// strNewXml 新记录的XML。可以为""或者null
// strOldXml 旧记录的XML。可以为""或者null
// bOutputDom 是否利用newDom/oldDom顺便输出DOM?
// return:
// -1 出错
// 0 成功
public int MergeKeys(string strID,
string strNewXml,
string strOldXml,
bool bOutputDom,
out KeyCollection newKeys,
out KeyCollection oldKeys,
out XmlDocument newDom,
out XmlDocument oldDom,
out string strError)
{
newKeys = null;
oldKeys = null;
newDom = null;
oldDom = null;
strError = "";
int nRet;
KeysCfg keysCfg = null;
nRet = this.GetKeysCfg(out keysCfg,
out strError);
if (nRet == -1)
return -1;
// 根据新xml创建检索点
newKeys = new KeyCollection();
if (String.IsNullOrEmpty(strNewXml) == false)
{
newDom = new XmlDocument();
newDom.PreserveWhitespace = true; //设PreserveWhitespace为true
try
{
newDom.LoadXml(strNewXml);
}
catch (Exception ex)
{
strError = "加载新数据到dom时出错。" + ex.Message;
return -1;
}
if (keysCfg != null)
{
nRet = keysCfg.BuildKeys(newDom,
strID,
"zh",//strLang,
// "",//strStyle,
this.KeySize,
out newKeys,
out strError);
if (nRet == -1)
return -1;
newKeys.Sort();
newKeys.RemoveDup();
}
}
oldKeys = new KeyCollection();
if (String.IsNullOrEmpty(strOldXml) == false
&& strOldXml.Length > 1) // 2012/1/31
{
oldDom = new XmlDocument();
oldDom.PreserveWhitespace = true; //设PreserveWhitespace为true
try
{
oldDom.LoadXml(strOldXml);
}
catch (Exception ex)
{
strError = "加载旧数据到dom时出错。" + ex.Message;
return -1;
}
if (keysCfg != null)
{
nRet = keysCfg.BuildKeys(oldDom,
strID,
"zh",//strLang,
// "",//strStyle,
this.KeySize,
out oldKeys,
out strError);
if (nRet == -1)
return -1;
oldKeys.Sort();
oldKeys.RemoveDup();
}
}
// 新旧检索点碰
KeyCollection dupKeys = new KeyCollection();
dupKeys = KeyCollection.Merge(newKeys,
oldKeys);
if (bOutputDom == false)
{
newDom = null;
oldDom = null;
}
return 0;
}
// 假写xml数据，得到检索点集合
// parameter:
// strXml xml数据
// strID 记录ID,构造检索点用
// strLang 语言版本
// strStyle 风格，控制返回值
// keyColl out参数,返回检索点集合的
// strError out参数，返回出错信息
// return:
// -1 出错
// 0 成功
// 线: 安全的
public int API_PretendWrite(string strXml,
string strRecordID,
string strLang,
// string strStyle,
out KeyCollection keys,
out string strError)
{
keys = null;
strError = "";
//**********对数据库加读锁**************
this.m_db_lock.AcquireReaderLock(m_nTimeOut);
#if DEBUG_LOCK
this.container.WriteDebugInfo("PretendWrite()，对'" + this.GetCaption("zh-CN") + "'数据库加读锁。");
#endif
try
{
//加载数据到DOM
XmlDocument domData = new XmlDocument();
domData.PreserveWhitespace = true; //设PreserveWhitespace为true
try
{
domData.LoadXml(strXml);
}
catch (Exception ex)
{
strError = "PretendWrite()里，加载参数中的xml数据出错。原因:" + ex.Message;
return -1;
}
KeysCfg keysCfg = null;
int nRet = this.GetKeysCfg(out keysCfg,
out strError);
if (nRet == -1)
return -1;
if (keysCfg != null)
{
//创建检索点
keys = new KeyCollection();
nRet = keysCfg.BuildKeys(domData,
strRecordID,
strLang,
// strStyle,
this.KeySize,
out keys,
out strError);
if (nRet == -1)
return -1;
//排序去重
keys.Sort();
keys.RemoveDup();
}
return 0;
}
finally
{
//****************对数据库解读锁**************
this.m_db_lock.ReleaseReaderLock();
#if DEBUG_LOCK
this.container.WriteDebugInfo("PretendWrite()，对'" + this.GetCaption("zh-CN") + "'数据库解读锁。");
#endif
}
}
