public OQuery Attach(OQuery src, IExpression expression)
{
if (expression is TakeExpression && expression.OQueryExpression != null)
{
src.Take(expression.OQueryExpression._top);
}
else if (expression is SkipExpression && expression.OQueryExpression != null)
{
src.Skip(expression.OQueryExpression._skip);
}
else if (expression is OrderExpression)
{
var orderExpression = (OrderExpression)expression;
if (orderExpression.Descending)
src.OrderbyDesc(orderExpression.FieldName);
else
src.Orderby(orderExpression.FieldName);
}
else if (expression is AndAlsoExpression)
{
var andAlsoExpression = (AndAlsoExpression) expression;
if (andAlsoExpression.Left != null)
Attach(src, andAlsoExpression.Left);
if (andAlsoExpression.Right != null)
Attach(src, andAlsoExpression.Right);
}
else if (expression is OrElseExpression)
{
var orElseExpression = (OrElseExpression) expression;
if (orElseExpression.Left != null)
Attach(src, orElseExpression.Left);
if (orElseExpression.Right != null)
Attach(src, orElseExpression.Right);
}
if (expression.OQueryExpression != null)
{
src.Attach(expression.OQueryExpression);
}
if (expression is Expression)
{
var exp = (Expression)expression;
if (exp.InnerExpression != null)
return Attach(src, exp.InnerExpression);
}
return src;
}
