/// <summary>
/// Visitor pattern method for <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbProjectExpression" />.
/// </summary>
/// <param name="expression"> The DbProjectExpression that is being visited. </param>
/// <exception cref="T:System.ArgumentNullException">
/// <paramref name="expression" />
/// is null
/// </exception>
public override void Visit(DbProjectExpression expression)
{
Check.NotNull <DbProjectExpression>(expression, nameof(expression));
this.VisitExpressionBindingPre(expression.Input);
this.VisitExpression(expression.Projection);
this.VisitExpressionBindingPost(expression.Input);
}
/// <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)
{
Check.NotNull(expression, "expression");
VisitExpressionBindingPre(expression.Input);
VisitExpression(expression.Projection);
VisitExpressionBindingPost(expression.Input);
}
public override DbExpression Visit(DbProjectExpression expression)
{
Check.NotNull(expression, "expression");
DbExpression result = expression;
var input = VisitExpressionBindingEnterScope(expression.Input);
var projection = VisitExpression(expression.Projection);
ExitScope();
if (!ReferenceEquals(expression.Input, input)
||
!ReferenceEquals(expression.Projection, projection))
{
result = CqtBuilder.Project(input, projection);
}
NotifyIfChanged(expression, result);
return(result);
}
/// <summary> /// When overridden in a derived class, implements the visitor pattern for /// <see /// cref="T:System.Data.Entity.Core.Common.CommandTrees.DbProjectExpression" /> /// . /// </summary> /// <returns>A result value of a specific type.</returns> /// <param name="expression"> /// The <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbProjectExpression" /> that is being visited. /// </param> public abstract TResultType Visit(DbProjectExpression expression);
/// <summary> /// When overridden in a derived class, implements the visitor pattern for /// <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbProjectExpression" /> /// . /// </summary> /// <param name="expression"> /// The <see cref="T:System.Data.Entity.Core.Common.CommandTrees.DbProjectExpression" /> that is visited. /// </param> public abstract void Visit(DbProjectExpression expression);
public override void Visit(DbProjectExpression expression)
{
}