/// <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(LinqJoinExpression expression)
{
var outer = this.ResolveTypes(expression.Outer);
var inner = this.ResolveTypes(expression.Inner);
var outerType = ValidateSourceIsACollection(outer);
var innerType = ValidateSourceIsACollection(inner);
var outerKeySelector = this.ResolveLambdaTypes(expression.OuterKeySelector, outerType);
var innerKeySelector = this.ResolveLambdaTypes(expression.InnerKeySelector, innerType);
var resultSelector = this.ResolveLambdaTypes(expression.ResultSelector, outerType, innerType);
return(LinqBuilder.Join(outer, inner, outerKeySelector, innerKeySelector, resultSelector, resultSelector.Body.ExpressionType.CreateCollectionType()));
}
/// <summary>
/// Visits a QueryExpression tree whose root node is the LinqJoinExpression.
/// </summary>
/// <param name="expression">The root node of the expression tree being visited.</param>
/// <returns>Uri query string representing the expression.</returns>
public virtual string Visit(LinqJoinExpression expression)
{
throw new TaupoNotSupportedException("Not supported");
}
/// <summary>
/// Generates System.CodeDom.CodeExpression from the given expression.
/// </summary>
/// <param name="expression">Expression from which System.CodeDom.CodeExpression is generated.</param>
/// <returns>Generated System.CodeDom.CodeExpression.</returns>
public virtual CodeExpression Visit(LinqJoinExpression expression)
{
return(this.VisitJoinExpressionBase(expression, "Join"));
}
/// <summary>
/// Evaluates the specified expression.
/// </summary>
/// <param name="expression">The expression to evaluate.</param>
/// <returns>Value of the expression.</returns>
public QueryValue Visit(LinqJoinExpression expression)
{
return(this.EvaluateJoinExpression(expression, false));
}
/// <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(LinqJoinExpression expression)
{
return(this.VisitJoinExpressionBase(expression, LinqBuilder.Join));
}
