Unrecognize the Generic Type when parse the lambda expression string

[zobinlee]

1. Description

I got an error when parse below lambda expression string

SqlFunc.Subqueryable<QMS.Base.Entities.Catalog>()
.Where(s1=>s0.CatalogId=s1.Id && ( s1.HandlerUserId=1  || !(s1.TypeValue ="provider" && s1.ParentId =  0 )))
.Any()

I have set the config like

 var parsingCfg = new ParsingConfig()
{
  CustomTypeProvider = new SqlSugarTypeProvider()
};

public class SqlSugarTypeProvider : DefaultDynamicLinqCustomTypeProvider
    { 
        public override HashSet<Type> GetCustomTypes()
        {
            var customTypes = base.GetCustomTypes();
            customTypes.Add(typeof(SqlFunc));
            customTypes.Add(typeof(Subqueryable<>)); 

            return customTypes;
        }
    }

and the SqlFunc define:

public class SqlFunc
{
  ....
   public static Subqueryable<T> Subqueryable<T>() where T:class,new(){ throw new NotSupportedException("Can only be used in expressions");} 
  ....
}

2. Exception

System.Linq.Dynamic.Core.Exceptions.ParseException:“No property or field 'Subqueryable' exists in type 'SqlFunc'”

Exception message:
Stack trace:
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseMemberAccess(Type type, Expression expression)
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseTypeAccess(Type type, Boolean getNext)
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseIdentifier()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParsePrimary()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseUnary()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseMultiplicative()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseAdditive()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseShiftOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseComparisonOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseLogicalAndOrOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseIn()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseAndOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseOrOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseLambdaOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseNullCoalescingOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.ParseConditionalOperator()
   at System.Linq.Dynamic.Core.Parser.ExpressionParser.Parse(Type resultType, Boolean createParameterCtor)
   at System.Linq.Dynamic.Core.DynamicExpressionParser.ParseLambda(Type delegateType, ParsingConfig parsingConfig, Boolean createParameterCtor, ParameterExpression[] parameters, Type resultType, String expression, Object[] values)
   at  System.Linq.Dynamic.Core.DynamicExpressionParser.ParseLambda(ParsingConfig parsingConfig, ParameterExpression[] parameters, Type resultType, String expression, Object[] values)
   at QMS.Application.Services.Repository`1.<>c__DisplayClass12_1.<.cctor>b__11(IGrouping`2 g) at  QMS.Application\Services\Repository.cs  : Line 570  
   ......

4. Any further technical details

Add any relevant detail that can help us.

[StefH]

Does it work when Subqueryable is a non-generic type?

[zobinlee]

Does it work when Subqueryable is a non-generic type?

this class is written by another coder,i try write a class which inherited this SqlFunc class and add a method to return this Generic type entity

public static dynamic Subqueryable(Type t)
{
     /// ......
     
     ///......
    return Subqueryable<t>;
}

and parser throw another exception,but i forget the exactly exception message,i need time to re-play this exception .