fix: regression when update required property (#902)

* fix(test): fix RequiredProperty test
* fix: Regression in v10 - Forced Update of Required Property #899

Author: DocSvartz

src/Mapster.Core/Enums/MapType.cs

@@ -8,5 +8,6 @@ public enum MapType
         Map = 1,
         MapToTarget = 2,
         Projection = 4,
+        ApplyNullPropagation = 8,
     }
 }

src/Mapster.Tests/WhenMappingRecordRegression.cs

@@ -449,11 +449,7 @@ public void RequiredProperty()
         {
             var source = new Person553 { FirstMidName = "John", LastName = "Dow" };
             var destination = new Person554 { ID = 245, FirstMidName = "Mary", LastName = "Dow" };
-
-            TypeAdapterConfig<Person553, Person554>.NewConfig()
-                //.Map(dest => dest.ID, source => 0)
-                .Ignore(x => x.ID);
-
+                        
             var s = source.BuildAdapter().CreateMapToTargetExpression<Person554>();
 
             var result = source.Adapt(destination);

src/Mapster/Adapters/BaseAdapter.cs

@@ -220,7 +220,7 @@ protected Expression CreateBlockExpressionBody(Expression source, Expression? de
                 .Any(y => y.GetType().FullName == "System.Runtime.CompilerServices.RequiredMemberAttribute"));
 
             if (requiremembers.Count() != 0)
-                set = CreateInlineExpression(source, arg, true);
+                set = CreateInlineExpression(source, arg.CloneWith(MapType.ApplyNullPropagation), true);
             else
                 set = CreateInstantiationExpression(transformedSource, destination, arg);
 

src/Mapster/Adapters/BaseClassAdapter.cs

@@ -113,7 +113,8 @@ select fn(src, destinationMember, arg))
                     Destination = (ParameterExpression?)destination,
                     UseDestinationValue = IsCanUsingDestinationValue(arg, destinationMember),
                 };
-                if(getter == null && !arg.DestinationType.IsRecordType()  
+                if(arg.MapType == MapType.ApplyNullPropagation &&
+                    getter == null && !arg.DestinationType.IsRecordType()  
                     && destinationMember.Info is PropertyInfo propinfo)
                 {
                     if (propinfo.GetCustomAttributes()

src/Mapster/Compile/CompileArgument.cs

@@ -48,5 +48,29 @@ select split
             _fetchConstructUsing = true;
             return _constructUsing;
         }
+
+        public CompileArgument CloneWith(MapType? mapType = null)
+        {
+            var result = new CompileArgument()
+            {
+                SourceType = this.SourceType,
+                DestinationType = this.DestinationType,
+                MapType = this.MapType,
+                ExplicitMapping = this.ExplicitMapping,
+                Settings = this.Settings,
+                Context = this.Context,
+                UseDestinationValue = this.UseDestinationValue,
+                ConstructorMapping = this.ConstructorMapping,
+                _srcNames = this._srcNames,
+                _destNames = this._destNames,
+                _fetchConstructUsing = this._fetchConstructUsing,
+                _constructUsing = this._constructUsing
+            };
+
+            if (mapType != null)
+                result.MapType = mapType.Value;
+
+            return result;
+        }
     }
 }