/// <summary>
/// Visitor pattern method for <see cref="DbProjectExpression"/>.
/// </summary>
/// <param name="expression">The DbProjectExpression that is being visited.</param>
/// <exception cref="ArgumentNullException"><paramref name="expression"/> is null</exception>
public override void Visit(DbProjectExpression expression)
{
// #433613: PreSharp warning 56506: Parameter 'expression' to this public method must be validated: A null-dereference can occur here.
EntityUtil.CheckArgumentNull(expression, "expression");
VisitExpressionBindingPre(expression.Input);
VisitExpression(expression.Projection);
VisitExpressionBindingPost(expression.Input);
}
public override DbExpression Visit(DbProjectExpression expression)
{
EntityUtil.CheckArgumentNull(expression, "expression");
DbExpression result = expression;
DbExpressionBinding input = this.VisitExpressionBindingEnterScope(expression.Input);
DbExpression projection = this.VisitExpression(expression.Projection);
this.ExitScope();
if (!object.ReferenceEquals(expression.Input, input) ||
!object.ReferenceEquals(expression.Projection, projection))
{
result = CqtBuilder.Project(input, projection);
}
NotifyIfChanged(expression, result);
return(result);
}
/// <summary> /// Typed visitor pattern method for DbProjectExpression. /// </summary> /// <param name="expression">The DbProjectExpression that is being visited.</param> /// <returns>An instance of TResultType.</returns> public abstract TResultType Visit(DbProjectExpression expression);
/// <summary> /// Visitor pattern method for DbProjectExpression. /// </summary> /// <param name="expression">The DbProjectExpression that is being visited.</param> public abstract void Visit(DbProjectExpression expression);
