When you call decompile when a nullable enum computed is part of the exrepssion tree an error is thrown. The same calls work if the enum is not nullable.
Expression of type 'System.Int32' cannot be used for constructor parameter of type 'VM.Core.Entities.TSD_DUT_DET+TheType'
~~~Stack Trace~~~
at DelegateDecompiler.Processor.Process()
at DelegateDecompiler.Processor.Process(VariableInfo[] locals, IList`1 args, Instruction instruction, Type returnType)
at DelegateDecompiler.MethodBodyDecompiler.DecompileConcrete(MethodInfo method, IList`1 args)
at DelegateDecompiler.MethodBodyDecompiler.Decompile(MethodInfo method, Type declaringType)
at DelegateDecompiler.DecompileExtensions.<>c__DisplayClass6_0.<.cctor>b__1()
at System.Lazy`1.CreateValue()
at System.Lazy`1.LazyInitValue()
at DelegateDecompiler.DecompileExtensions.Decompile(MethodInfo method, Type declaringType)
at DelegateDecompiler.DecompileExpressionVisitor.Decompile(MethodInfo method, Expression instance, IList`1 arguments)
at DelegateDecompiler.DecompileExpressionVisitor.VisitMember(MemberExpression node)
at DelegateDecompiler.DecompileExpressionVisitor.VisitMethodCall(MethodCallExpression node)
at DelegateDecompiler.DecompileExpressionVisitor.Decompile(Expression expression)
at DelegateDecompiler.DecompiledQueryProvider.CreateQuery[TElement](Expression expression)
at DelegateDecompiler.DecompileExtensions.Decompile[T](IQueryable`1 self)
at VM.WebForm1.Page_Load(Object sender, EventArgs e) in C:\Projects_TFS\VM-Sprint\VM\WebForm1.aspx.cs:line 17
~~~Environment~~~
EntityFramework 6.2.0
.Net Framework 4.7.2
Oracle.ManagedDataAccess 19.3.1
Oracle.ManagedDataAccess.EntityFramework 19.3.0
DelegateDecompiler 0.28.0
DelegateDecompiler.EntityFramework 0.28.0
~~~Entities~~~
[Table("TSD_DUT_DET", Schema = "TSD_MKTG")]
public class TSD_DUT_DET
{
public enum TheType
{
ONE = 1,
TWO = 2,
THREE = 3
}
[Key]
[Column("TSD_DUT_DET_ID")]
public decimal ID { get; set; }
[Column("TYP")]
public int? _type { get; set; }
[NotMapped]
[Computed]
public TheType? type {
get => (TheType?)this._type;
set => this._type = value == null ? null : (int?)value;
}
}
[Table("TSD_DUT_DET_MDL", Schema = "TSD_MKTG")]
public class TSD_DUT_DET_MDL
{
public enum TheType
{
ONE = 1,
TWO = 2,
THREE = 3
}
[Key]
[Column("TSD_DUT_DET_MDL_ID")]
public decimal ID { get; set; }
[Column("TYP")]
public int _type { get; set; }
[NotMapped]
[Computed]
public TheType type {
get => (TheType)this._type;
set => this._type = (int)value;
}
}
~~~Successful Commands For Not Nullable Enum And Generated SQL~~~
context.TSD_DUT_DET_MDL.Where(x => x.type == Core.Entities.TSD_DUT_DET_MDL.TheType.ONE).Decompile().FirstOrDefault();
SELECT
"Extent1"."TSD_DUT_DET_MDL_ID" AS "TSD_DUT_DET_MDL_ID",
"Extent1"."TYP" AS "TYP"
FROM "TSD_MKTG"."TSD_DUT_DET_MDL" "Extent1"
WHERE (1 = "Extent1"."TYP") AND (ROWNUM <= (1) )
context.TSD_DUT_DET_MDL.Select(x => new { type = x.type }).Where(x => x.type == Core.Entities.TSD_DUT_DET_MDL.TheType.ONE).Decompile().FirstOrDefault();
SELECT
"Extent1"."TYP" AS "TYP"
FROM "TSD_MKTG"."TSD_DUT_DET_MDL" "Extent1"
WHERE (1 = "Extent1"."TYP") AND (ROWNUM <= (1) )
context.TSD_DUT_DET_MDL.Select(x => new { type = x.type }).Decompile().FirstOrDefault();
SELECT
"c"."TYP" AS "TYP"
FROM "TSD_MKTG"."TSD_DUT_DET_MDL" "c"
WHERE (ROWNUM <= (1) )
~~~Failed Commands For Nullable Enum~~~
context.TSD_DUT_DET.Where(x => x.type == Core.Entities.TSD_DUT_DET.TheType.ONE).Decompile().FirstOrDefault();
context.TSD_DUT_DET.Select(x => new { type = x.type }).Where(x => x.type == Core.Entities.TSD_DUT_DET.TheType.ONE).Decompile().FirstOrDefault();
context.TSD_DUT_DET.Select(x => new { type = x.type }).Decompile().FirstOrDefault();
I also changed the underlying int value on the TSD_DUT_DET_MDL entity to int?, and it still works.
I also changed the underlying int? value on the TSD_DUT_DET entity to int, and it still throws the same error.
hazzik
commented
2 years ago
When you call decompile when a nullable enum computed is part of the exrepssion tree an error is thrown. The same calls work if the enum is not nullable.