private IDictionary <string, CellToPropertyMap> InternalCreatePropertyMap <TModel>(IDataSheet worksheet,
IReadOnlyList <MemberSpec <TModel> > specs) where TModel : class
{
if (worksheet == null)
{
throw new ArgumentNullException(nameof(worksheet));
}
var ensuredSpecs = EnsureSpecs(specs);
var map = new Dictionary <string, CellToPropertyMap>();
var properties = _propertiesExtractor.GetPublicProperties <TModel>();
var headerRow = worksheet.FirstRowUsed();
var mappingExceptions = new List <MappingException>();
foreach (var property in properties)
{
try
{
var cell = FindMatchingCell(property, headerRow, ensuredSpecs);
if (cell.AnyValue())
{
var cellMap = new CellToPropertyMap(property, cell.ColumnLetter,
cell.RowNumber, cell.ToString());
map.Add(property.Name, cellMap);
}
}
catch (MappingException exception)
{
LogFailedToMapProperty(property, exception);
mappingExceptions.Add(exception);
}
}
if (mappingExceptions.Any())
{
throw new MappingException($"'{mappingExceptions.Count}' mapping issues found.", mappingExceptions);
}
return(map);
}