/// <summary>
/// Resolves types for the specified expression.
/// </summary>
/// <param name="expression">The expression to resolve types for.</param>
/// <returns>Expression with resolved types.</returns>
public QueryExpression Visit(LinqOrderByExpression expression)
{
var source = this.ResolveTypes(expression.Source);
var sourceType = ValidateSourceIsACollection(source);
var keySelectors = expression.KeySelectors.Select(s => this.ResolveLambdaTypes(s, sourceType)).ToArray();
return(LinqBuilder.OrderBy(source, keySelectors, expression.AreDescending, sourceType));
}
/// <summary>
/// Replaces the given expression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Replaced expression.</returns>
public virtual QueryExpression Visit(LinqOrderByExpression expression)
{
QueryExpression source = this.ReplaceExpression(expression.Source);
var keySelectors = expression.KeySelectors.Select(this.ReplaceExpression).Cast <LinqLambdaExpression>().ToArray();
if (HasChanged(expression.Source, source) || HasChanged(expression.KeySelectors, keySelectors))
{
// using internal overload, because there may be multiple keySelectors, public overloads only allow to set one at at time
return(LinqBuilder.OrderBy(source, keySelectors, expression.AreDescending, expression.ExpressionType));
}
return(expression);
}
