protected override Expression VisitMember(MemberExpression expression)
{
// Field hierarchy is flattened (Person.Address.Street is just Street), append as is, do not call Visit.
// Property call (string.Length, DateTime.Month, etc).
if (MethodVisitor.VisitPropertyCall(expression, this))
{
return(expression);
}
// Special case: grouping
if (VisitGroupByMember(expression.Expression))
{
return(expression);
}
var queryable = ExpressionWalker.GetCacheQueryable(expression, false);
if (queryable != null)
{
// Find where the projection comes from.
expression = ExpressionWalker.GetProjectedMember(expression.Expression, expression.Member) ??
expression;
var fieldName = GetEscapedFieldName(expression, queryable);
ResultBuilder.AppendFormat("{0}.{1}", Aliases.GetTableAlias(expression), fieldName);
}
else
{
AppendParameter(ExpressionWalker.EvaluateExpression <object>(expression));
}
return(expression);
}
protected override Expression VisitConstant(ConstantExpression expression)
{
if (MethodVisitor.VisitConstantCall(expression, this))
{
return(expression);
}
AppendParameter(expression.Value);
return(expression);
}
protected override Expression VisitMethodCall(MethodCallExpression expression)
{
MethodVisitor.VisitMethodCall(expression, this);
return(expression);
}