///<summary>Does not save to DB. Return null if listName does not exist.
///Pass in the userod.UserNum of the user that is making the change. Typically Security.CurUser.UserNum.
///Security.CurUser cannot be used within this method due to the server side of middle tier.</summary>
public static WikiListHist GenerateFromName(string listName, long userNum)
{
if (RemotingClient.RemotingRole == RemotingRole.ClientWeb)
{
return(Meth.GetObject <WikiListHist>(MethodBase.GetCurrentMethod(), listName, userNum));
}
if (!WikiLists.CheckExists(listName))
{
return(null);
}
WikiListHist retVal = new WikiListHist();
retVal.UserNum = userNum;
retVal.ListName = listName;
retVal.DateTimeSaved = DateTime.Now;
DataTable table = WikiLists.GetByName(listName);
table.TableName = listName; //required for xmlwriter
using (var writer = new StringWriter()) {
table.WriteXml(writer, XmlWriteMode.WriteSchema);
retVal.ListContent = writer.ToString();
}
List <WikiListHeaderWidth> listHeaders = WikiListHeaderWidths.GetForList(listName);
if (listHeaders.Count > 0)
{
retVal.ListHeaders = string.Join(";", listHeaders.Select(x => x.ColName + "," + x.ColWidth));
}
return(retVal);
}
///<summary>Drops table in DB. Recreates Table, then fills with Data.
///Pass in the userod.UserNum of the user that is making the change. Typically Security.CurUser.UserNum.</summary>
public static void RevertFrom(WikiListHist wikiListHist, long userNum)
{
if (RemotingClient.RemotingRole == RemotingRole.ClientWeb)
{
Meth.GetVoid(MethodBase.GetCurrentMethod(), wikiListHist, userNum);
return;
}
if (!WikiLists.CheckExists(wikiListHist.ListName))
{
return; //should never happen.
}
DataTable tableRevertedContent = new DataTable();
using (XmlReader xmlReader = XmlReader.Create(new StringReader(wikiListHist.ListContent))){
tableRevertedContent.ReadXml(xmlReader);
}
//Begin the process of deleting old table and creating new one.
//Save current wiki list content to the history
WikiListHists.Insert(GenerateFromName(wikiListHist.ListName, userNum));
//Delete current wiki list
WikiLists.DeleteList(wikiListHist.ListName);
//Create a new empty wiki list, except for the PK column
WikiLists.CreateNewWikiList(wikiListHist.ListName);
//Load header data
List <WikiListHeaderWidth> listHeaders = WikiListHeaderWidths.GetFromListHist(wikiListHist);
//Add one column per header, skipping the Pk column
for (int i = 1; i < listHeaders.Count; i++) //skip the first one, because the first one is the primary key
{
WikiLists.AddColumn(listHeaders[i].ListName);
}
//Update db with current names and current widths of columns in the WikiListHeaderWidth table to the reverted values
WikiListHeaderWidths.UpdateNamesAndWidths(wikiListHist.ListName, listHeaders);
//Fill db table with the reverted values.
for (int i = 0; i < tableRevertedContent.Rows.Count; i++)
{
DataRow row = tableRevertedContent.Rows[i];
row[0] = WikiLists.AddItem(wikiListHist.ListName); //setPK and add new row
DataTable tableOneItem = tableRevertedContent.Clone();
tableOneItem.Rows.Add(tableOneItem.NewRow());
tableOneItem.Rows[0].ItemArray = row.ItemArray;
WikiLists.UpdateItem(wikiListHist.ListName, tableOneItem);
}
}
///<summary>Drops table in DB. Recreates Table, then fills with Data.
///Pass in the userod.UserNum of the user that is making the change. Typically Security.CurUser.UserNum.</summary>
public static void RevertFrom(WikiListHist wikiListHist, long userNum)
{
if (RemotingClient.RemotingRole == RemotingRole.ClientWeb)
{
Meth.GetVoid(MethodBase.GetCurrentMethod(), wikiListHist, userNum);
return;
}
if (!WikiLists.CheckExists(wikiListHist.ListName))
{
return; //should never happen.
}
Insert(GenerateFromName(wikiListHist.ListName, userNum)); //Save current wiki list content to the history
List <WikiListHeaderWidth> listHeaders = WikiListHeaderWidths.GetFromListHist(wikiListHist); //Load header data
WikiLists.CreateNewWikiList(wikiListHist.ListName, listHeaders, true); //dropTableIfExists=true, so the existing table and HeaderWidth rows will be dropped
DataTable tableRevertedContent = new DataTable();
using (StringReader sr = new StringReader(wikiListHist.ListContent))
using (XmlReader xmlReader = XmlReader.Create(sr)) {
tableRevertedContent.ReadXml(xmlReader);
}
string commandStart = $@"INSERT INTO wikilist_{POut.String(wikiListHist.ListName)} ({string.Join(",",listHeaders.Select(x => POut.String(x.ColName)))})
VALUES " ;
StringBuilder sb = new StringBuilder(commandStart);
string commaStr = "";
for (int i = 0; i < tableRevertedContent.Rows.Count; i++)
{
string rowStr = "(" + string.Join(",", tableRevertedContent.Rows[i].ItemArray.Select(x => "'" + POut.String(x.ToString()) + "'")) + ")";
if (sb.Length + rowStr.Length + 1 > TableBase.MaxAllowedPacketCount)
{
Db.NonQ(sb.ToString());
sb = new StringBuilder(commandStart);
commaStr = "";
}
sb.Append(commaStr + rowStr);
commaStr = ",";
if (i == tableRevertedContent.Rows.Count - 1)
{
Db.NonQ(sb.ToString());
}
}
}
///<summary>Does not save to DB. Return null if listName does not exist.
///Pass in the userod.UserNum of the user that is making the change. Typically Security.CurUser.UserNum.
///Security.CurUser cannot be used within this method due to the server side of middle tier.</summary>
public static WikiListHist GenerateFromName(string listName, long userNum)
{
if (RemotingClient.RemotingRole == RemotingRole.ClientWeb)
{
return(Meth.GetObject <WikiListHist>(MethodBase.GetCurrentMethod(), listName, userNum));
}
if (!WikiLists.CheckExists(listName))
{
return(null);
}
WikiListHist retVal = new WikiListHist();
retVal.UserNum = userNum;
retVal.ListName = listName;
retVal.DateTimeSaved = DateTime.Now;
DataTable table = WikiLists.GetByName(listName);
table.TableName = listName; //required for xmlwriter
using (var writer = new System.IO.StringWriter()) {
table.WriteXml(writer);
retVal.ListContent = writer.ToString();
}
List <WikiListHeaderWidth> listHeaders = WikiListHeaderWidths.GetForList(listName);
StringBuilder sb = new StringBuilder();
for (int i = 0; i < listHeaders.Count; i++)
{
if (i > 0)
{
sb.Append(";");
}
sb.Append(listHeaders[i].ColName + "," + listHeaders[i].ColWidth);
}
retVal.ListHeaders = sb.ToString();
using (var writer = new StringWriter()) {
table.WriteXml(writer, XmlWriteMode.WriteSchema);
retVal.ListContent = writer.ToString();
}
return(retVal);
}
