public static Action <TdsColumnWriter, T> GetComplexWriter <T>(TdsColumnWriter writer)
{
var newMapping = GetPreMappedColumns(writer);
if (newMapping.Length == 0)
{
newMapping = GetDefaultMapping <T>(writer);
}
return(_GetWriter <T>(newMapping));
}
private static Mapping[] GetDefaultMapping <T>(TdsColumnWriter writer)
{
var sqlTableColumns = GetDefaultMapping(writer.MetaData);
var typeColumns = typeof(T).GetPublicProperties();
var columnsNotMapped = sqlTableColumns.Select(x => x.SqlName).Except(typeColumns.Keys).ToArray();
if (columnsNotMapped.Any())
{
throw new ArgumentException($"Not all columns are mapped to class properties. The follow columns could not mapped: {string.Join(",", columnsNotMapped)}");
}
var newMapping = sqlTableColumns.Select(x => new Mapping {
SqlIndex = x.SqlIndex, PropertyInfo = typeColumns[x.SqlName], SqlName = x.SqlName, TdsType = x.TdsType
}).ToArray();
return(newMapping);
}
private static Mapping[] GetPreMappedColumns(TdsColumnWriter writer)
{
return(writer.MetaData.Where(x => x.PropertyInfo != null).Select((x, i) => new Mapping {
PropertyInfo = x.PropertyInfo, SqlName = x.Column, TdsType = x.TdsType, SqlIndex = i
}).ToArray());
}
