public void Visit(SqlExpression sqlExpression)
{
if (visitedExpressions.Contains(sqlExpression))
{
return;
}
visitedExpressions.Add(sqlExpression);
sqlExpression.AcceptVisitor(this);
}
private void AddComputedExpression(AddValueContext addContext)
{
SqlTableColumn column = SqlDml.TableColumn(addContext.Statement.Table, addContext.Field.Column.Name);
var all = Expression.Call(Expression.Constant(parent.Session.Query), "All", new[] { typeof(T) });
MethodCallExpression selectExpression = Expression.Call(
typeof(Queryable),
"OrderBy",
addContext.Lambda.Type.GetGenericArguments(),
all,
addContext.Lambda);
QueryTranslationResult request = parent.GetRequest(parent.QueryProvider.CreateQuery <T>(selectExpression));
var sqlSelect = ((SqlSelect)request.Query);
SqlExpression ex = sqlSelect.OrderBy[0].Expression;
parent.Bindings.AddRange(request.ParameterBindings);
if (parent.JoinedTableRef != null)
{
ex.AcceptVisitor(new ComputedExpressionSqlVisitor(sqlSelect.From, parent.JoinedTableRef));
}
addContext.Statement.AddValue(column, ex);
}