修复group by下的匿名和member init的绑定 发布x.6.0.35

Author: xuejmnet

samples/Sample.MySql/Controllers/WeatherForecastController.cs

@@ -15,6 +15,13 @@ public class ssss
         public string Id { get; set; }
         public int C { get; set; }
     }
+
+    public class abc
+    {
+        public string id { get; set; }
+        public string name { get; set; }
+        public int count { get; set; }
+    }
     [ApiController]
     [Route("[controller]/[action]")]
     public class WeatherForecastController : ControllerBase
@@ -58,6 +65,24 @@ public async Task<IActionResult> Get()
             // Console.WriteLine("------------");
             // using (var tran = _defaultTableDbContext.Database.BeginTransaction())
             // {
+            var resultX1 = await _defaultTableDbContext.Set<SysUserMod>()
+                                .Where(o => o.Id == "2" || o.Id == "3").GroupBy(o => new { o.Id,o.Name })
+                                .Select(o => new 
+                                {
+                                    id = o.Key.Id,
+                                    name = o.Key.Name,
+                                    count = o.Count()
+                                }).ToListAsync();
+            var resultX12 = await _defaultTableDbContext.Set<SysUserMod>()
+                .Where(o => o.Id == "2" || o.Id == "3").GroupBy(o => new { o.Id,o.Name })
+                .Select(o => new abc
+                {
+                    id = o.Key.Id,
+                    name = o.Key.Name,
+                    count = o.Count()
+                }).ToListAsync();
+            
+            
             var firstOrDefault = _defaultTableDbContext.Set<SysUserMod>().FromSqlRaw($"select * from {nameof(SysUserMod)}").FirstOrDefault();
 
             var sysUserMods1 = _defaultTableDbContext.Set<SysTest>()

src/ShardingCore/Extensions/ExpressionExtension.cs

@@ -25,17 +25,17 @@ public static void SetPropertyValue<T>(this T t, string name, object value)
                 throw new Exception($"type:{typeof(T)} not found [{name}] properity ");
             }
 
-            var param_obj = Expression.Parameter(type);
-            var param_val = Expression.Parameter(typeof(object));
-            var body_obj = Expression.Convert(param_obj, type);
-            var body_val = Expression.Convert(param_val, p.PropertyType);
 
             //获取设置属性的值的方法
             var setMethod = p.GetSetMethod(true);
 
             //如果只是只读,则setMethod==null
             if (setMethod != null)
             {
+                var param_obj = Expression.Parameter(type);
+                var param_val = Expression.Parameter(typeof(object));
+                var body_obj = Expression.Convert(param_obj, type);
+                var body_val = Expression.Convert(param_val, p.PropertyType);
                 var body = Expression.Call(param_obj, p.GetSetMethod(), body_val);
                 var setValue = Expression.Lambda<Action<T, object>>(body, param_obj, param_val).Compile();
                 setValue(t, value);

src/ShardingCore/Extensions/TypeExtension.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
 using System.Linq;
+using System.Reflection;
+using System.Runtime.CompilerServices;
 using System.Text;
 using System.Threading.Tasks;
 
@@ -87,5 +89,16 @@ public static bool IsBooleanType(Type type)
 
             return Type.GetTypeCode(type) == TypeCode.Boolean;
         }
+        public static bool IsAnonymousType(this Type type)
+        {
+            if (type == null)
+                throw new ArgumentNullException(nameof(type));
+
+            // HACK: The only way to detect anonymous types right now.
+            return Attribute.IsDefined(type, typeof(CompilerGeneratedAttribute), false)
+                   && type.IsGenericType && type.Name.Contains("AnonymousType")
+                   && (type.Name.StartsWith("<>") || type.Name.StartsWith("VB$"))
+                   && type.Attributes.HasFlag(TypeAttributes.NotPublic);
+        }
     }
 }

src/ShardingCore/Sharding/Enumerators/AggregateExtensions/AggregateExtension.cs

@@ -25,14 +25,36 @@ public static TSource CopyTSource<TSource>(TSource source)
             var anonType = source.GetType();
             var allProperties = anonType.GetProperties();
             var allPropertyTypes= allProperties.Select(o=>o.PropertyType).ToArray();
-            var constantExpressions = allProperties.Select(o => Expression.Constant(o.GetValue(source))).ToArray();
-
-            var exp = Expression.New(
-                anonType.GetConstructor(allPropertyTypes),
-                constantExpressions);
-            var lambda = LambdaExpression.Lambda(exp);
-            TSource myObj = (TSource)lambda.Compile().DynamicInvoke();
-            return myObj;
+            if (anonType.IsAnonymousType())
+            {
+                var constantExpressions = allProperties.Select(o => Expression.Constant(o.GetValue(source))).ToArray();
+                var exp = Expression.New(
+                    anonType.GetConstructor(allPropertyTypes),
+                    constantExpressions);
+                var lambda = LambdaExpression.Lambda(exp);
+                TSource myObj = (TSource)lambda.Compile().DynamicInvoke();
+                return myObj;
+            }
+            else
+            {
+                var parameters = allProperties.Select(o => o.GetValue(source)).ToArray();
+                if (anonType.GetConstructors().Length == 1 &&
+                    anonType.GetConstructors()[0].GetParameters().Length == allPropertyTypes.Length)
+                {
+                    return (TSource)Activator.CreateInstance(anonType, parameters);
+                }
+                else
+                {
+                    var instance = (TSource)Activator.CreateInstance(anonType);
+                    foreach (var property in allProperties)
+                    {
+                        var value = property.GetValue(source);
+                        instance.SetPropertyValue(property.Name,value);
+                    }
+
+                    return instance;
+                }
+            }
 
         }
         [ExcludeFromCodeCoverage]

src/ShardingCore/Sharding/Visitors/QueryableExtraDiscoverVisitor.cs

@@ -125,6 +125,21 @@ protected override Expression VisitMethodCall(MethodCallExpression node)
                         var propertyInfo = declaringType.GetProperty(memberName);
                         _selectContext.SelectProperties.Add(new SelectOwnerProperty(declaringType, propertyInfo));
                         //memberExpression.Acc
+                    }else if (expression is MemberInitExpression memberInitExpression)
+                    {
+                        foreach (var memberBinding in memberInitExpression.Bindings)
+                        {
+                            if (memberBinding is MemberAssignment memberAssignment)
+                            {
+                                if (memberAssignment.Expression is MemberExpression bindMemberExpression)
+                                {
+                                    var declaringType = memberBinding.Member.DeclaringType;
+                                    var memberName = memberBinding.Member.Name;
+                                    var propertyInfo = declaringType.GetProperty(memberName);
+                                    _selectContext.SelectProperties.Add(new SelectOwnerProperty(declaringType, propertyInfo));
+                                }
+                            }
+                        }
                     }
                     //if (expression != null)
                     //{