protected internal override bool OnReadNextRow(object[] values)
{
string[] parts;
if (ReadNextRowParts(out parts, true))
{
// Now parse the parts
int pi = 0;
for (int i = 0; i < Columns.Count; i++)
{
if (!Columns[i].IsIdentity)
{
if (parts[pi] == null && Columns[i].DataType.IsNullable)
{
values[i] = null;
}
else if (parts[pi] == null)
{
throw new ArgumentNullException(); // *** TODO
}
else if (!ColumnParsers[i](parts[pi], out values[i]))
{
throw new FormatException(); // TODO: add logic to skip exceptions
}
pi++;
}
else
{
values[i] = null; // Identity value will be filled in by the data reader
}
}
// TODO: add logic to handle nulls
return(true);
}
else
{
return(false);
}
}
///<summary>Reads a TableSchema from an XML element.</summary>
///<param name="xml">An XML element created by <see cref="TableSchema.ToXml"/>.</param>
///<param name="referencedSchemas">A set of schemas that may be referenced by the foreign keys in the schema being created.</param>
public static TableSchema FromXml(XElement xml, IEnumerable <TableSchema> referencedSchemas)
{
if (xml == null)
{
throw new ArgumentNullException("xml");
}
var retVal = new TableSchema(xml.Attribute("Name").Value);
foreach (var elem in xml.Elements())
{
ColumnParsers[elem.Name.LocalName](retVal, elem, referencedSchemas);
}
var primaryKey = xml.Attribute("PrimaryKey");
if (primaryKey != null)
{
retVal.PrimaryKey = retVal.Columns[primaryKey.Value];
}
return(retVal);
}
