public SelectColumnBasedElement(ISelectColumn column, ICompositeKey primaryKey)
{
_Column = column ?? throw new ArgumentNullException(nameof(column));
PrimaryKey = primaryKey ?? throw new ArgumentNullException(nameof(primaryKey));
_ParameterName = null;
}
public SelectColumnBasedElement(string parameterName, ICompositeKey primaryKey)
{
_ParameterName = parameterName ?? throw new ArgumentNullException(nameof(parameterName));
PrimaryKey = primaryKey ?? throw new ArgumentNullException(nameof(primaryKey));
_Column = null;
}
internal static IQueryTable GetSingleMappingContext(ISelectColumn column)
{
var mappingContext = column.MappingContext
.LastOrDefault(x => x != column.PrimaryKey.Table) ??
column.MappingContext.FirstOrDefault();
return(mappingContext ?? throw new InvalidOperationException($"You must have at least one mapping context: {column.Alias}."));
}
static string Alias(ISelectColumn c) => c.Alias;