private int ReadOldRowData(DataSet ds, ref DataTable table, ref int pos, XmlReader row)
{
// read table information
if (ds != null)
{
table = ds.Tables.GetTable(XmlConvert.DecodeName(row.LocalName), row.NamespaceURI);
}
else
{
table = GetTable(XmlConvert.DecodeName(row.LocalName), row.NamespaceURI);
}
if (table == null)
{
row.Skip(); // need to skip this element if we dont know about it, before returning -1
return -1;
}
int iRowDepth = row.Depth;
string value = null;
if (table == null)
throw ExceptionBuilder.DiffgramMissingTable(XmlConvert.DecodeName(row.LocalName));
value = row.GetAttribute(Keywords.ROWORDER, Keywords.MSDNS);
if (!string.IsNullOrEmpty(value))
{
pos = (int)Convert.ChangeType(value, typeof(int), null);
}
int record = table.NewRecord();
foreach (DataColumn col in table.Columns)
{
col[record] = DBNull.Value;
}
foreach (DataColumn col in table.Columns)
{
if ((col.ColumnMapping == MappingType.Element) ||
(col.ColumnMapping == MappingType.SimpleContent))
continue;
if (col.ColumnMapping == MappingType.Hidden)
{
value = row.GetAttribute("hidden" + col.EncodedColumnName, Keywords.MSDNS);
}
else
{
value = row.GetAttribute(col.EncodedColumnName, col.Namespace);
}
if (value == null)
{
continue;
}
col[record] = col.ConvertXmlToObject(value);
}
row.Read();
SkipWhitespaces(row);
int currentDepth = row.Depth;
if (currentDepth <= iRowDepth)
{
// the node is empty
if (currentDepth == iRowDepth && row.NodeType == XmlNodeType.EndElement)
{
// read past the EndElement of the current row
// note: (currentDepth == iRowDepth) check is needed so we do not skip elements on parent rows.
row.Read();
SkipWhitespaces(row);
}
return record;
}
if (table.XmlText != null)
{
DataColumn col = table.XmlText;
col[record] = col.ConvertXmlToObject(row.ReadString());
}
else
{
while (row.Depth > iRowDepth)
{
string ln = XmlConvert.DecodeName(row.LocalName);
string ns = row.NamespaceURI;
DataColumn column = table.Columns[ln, ns];
if (column == null)
{
while ((row.NodeType != XmlNodeType.EndElement) && (row.LocalName != ln) && (row.NamespaceURI != ns))
row.Read(); // consume the current node
row.Read(); // now points to the next column
//SkipWhitespaces(row); seems no need, just in case if we see other issue , this will be here as hint
continue;// add a read here!
}
if (column.IsCustomType)
{
// if column's type is object or column type does not implement IXmlSerializable
bool isPolymorphism = (column.DataType == typeof(object) || (row.GetAttribute(Keywords.MSD_INSTANCETYPE, Keywords.MSDNS) != null) ||
(row.GetAttribute(Keywords.TYPE, Keywords.XSINS) != null));
bool skipped = false;
if (column.Table.DataSet != null && column.Table.DataSet._udtIsWrapped)
{
row.Read(); // if UDT is wrapped, skip the wrapper
skipped = true;
}
XmlRootAttribute xmlAttrib = null;
if (!isPolymorphism && !column.ImplementsIXMLSerializable)
{ // THIS CHECK MAY BE IS WRONG think more
// if does not implement IXLSerializable, need to go with XmlSerializer: pass XmlRootAttribute
if (skipped)
{
xmlAttrib = new XmlRootAttribute(row.LocalName);
xmlAttrib.Namespace = row.NamespaceURI;
}
else
{
xmlAttrib = new XmlRootAttribute(column.EncodedColumnName);
xmlAttrib.Namespace = column.Namespace;
}
}
// for else case xmlAttrib MUST be null
column[record] = column.ConvertXmlToObject(row, xmlAttrib); // you need to pass null XmlAttib here
if (skipped)
{
row.Read(); // if Wrapper is skipped, skip its end tag
}
}
else
{
int iColumnDepth = row.Depth;
row.Read();
// SkipWhitespaces(row);seems no need, just in case if we see other issue , this will be here as hint
if (row.Depth > iColumnDepth)
{ //we are inside the column
if (row.NodeType == XmlNodeType.Text || row.NodeType == XmlNodeType.Whitespace || row.NodeType == XmlNodeType.SignificantWhitespace)
{
string text = row.ReadString();
column[record] = column.ConvertXmlToObject(text);
row.Read(); // now points to the next column
}
}
else
{
// <element></element> case
if (column.DataType == typeof(string))
column[record] = string.Empty;
}
}
}
}
row.Read(); //now it should point to next row
SkipWhitespaces(row);
return record;
}
