/// <summary>
/// Takes a <see cref="List{T}"/> of <see cref="Entity"/> objects and composes them into raw data
/// using the specifications in the <see cref="MappingInfo"/>. This raw data can then be exported as a CSV file.
/// This function is the opposite of <see cref="DataParser.ParseAsync{TEntityForSave}(IEnumerable{string[]}, MappingInfo, ImportErrors)"/>.
/// </summary>
public IEnumerable <string[]> Compose <TEntityForSave>(List <TEntityForSave> entities, MappingInfo mapping)
where TEntityForSave : EntityWithKey
{
var result = new List <string[]>(entities.Count); // it will be at least that long, so might as well
int columnCount = mapping.ColumnCount();
// Recursive function
int numberOfRows = 0;
foreach (var entity in entities)
{
numberOfRows += ComposeDataRowsFromEntity(entity, mapping, result, numberOfRows, columnCount);
}
return(result);
}
