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Unrecognize the Generic Type when parse the lambda expression string #742
Description
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.
Activity
StefH commentedon Sep 10, 2023
Does it work when
Subqueryableis a non-generic type?zobinlee commentedon Sep 10, 2023
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
and parser throw another exception,but i forget the exactly exception message,i need time to re-play this exception .