/// <summary>
/// 访问 <see cref="SubqueryExpression"/>。
/// </summary>
/// <param name="subquery">要访问的表达式。</param>
/// <returns></returns>
protected virtual Expression VisitSubquery(SubqueryExpression subquery)
{
return(((DbExpressionType)subquery.NodeType) switch
{
DbExpressionType.Scalar => VisitScalar((ScalarExpression)subquery),
DbExpressionType.Exists => VisitExists((ExistsExpression)subquery),
DbExpressionType.In => VisitIn((InExpression)subquery),
_ => subquery,
});
/// <summary>
/// 访问 <see cref="SubqueryExpression"/>。
/// </summary>
/// <param name="subquery">要访问的表达式。</param>
/// <returns></returns>
protected virtual Expression VisitSubquery(SubqueryExpression subquery)
{
switch (subquery.NodeType)
{
case DbExpressionType.Scalar:
return(VisitScalar((ScalarExpression)subquery));
case DbExpressionType.Exists:
return(VisitExists((ExistsExpression)subquery));
case DbExpressionType.In:
return(VisitIn((InExpression)subquery));
}
return(subquery);
}