public IEntitySubsequentOrderBuilder <T> OrderBy(IQueryable <T> source, OrderExpressionBase orderExpression)
{
if (source == null)
{
throw new ArgumentNullException(nameof(source));
}
if (orderExpression == null)
{
throw new ArgumentNullException(nameof(orderExpression));
}
var selector = LookupSelector(orderExpression.GetSelector());
if (selector == null)
{
_queryable = source.OrderBy(e => 1);
return(this);
}
_queryable = orderExpression.IsDescending()
? source.OrderByDescending(selector)
: source.OrderBy(selector);
return(this);
}
public IEntitySubsequentOrderBuilder <T> ThenOrderBy(OrderExpressionBase orderExpression)
{
if (_queryable == null || orderExpression == null)
{
return(this);
}
var selectorExpression = LookupSelector(orderExpression.GetSelector());
if (selectorExpression == null)
{
return(this);
}
_queryable = orderExpression.IsDescending()
? _queryable.ThenByDescending(selectorExpression)
: _queryable.ThenBy(selectorExpression);
return(this);
}