7.x.1.10 修复匿名对象返回nullable的value的bug

samples/Sample.AutoCreateIfPresent/AreaDeviceRoute.cs

@@ -61,6 +61,7 @@ namespace Sample.AutoCreateIfPresent
 
         public override string ShardingKeyToTail(object shardingKey)
         {
+            InitOnce();
             return $"{shardingKey}";
         }
 
@@ -70,6 +71,12 @@ namespace Sample.AutoCreateIfPresent
         /// </summary>
         /// <returns></returns>
         public override List<string> GetTails()
+        {
+            InitOnce();
+            return _tails.Keys.ToList();
+        }
+
+        private void InitOnce()
         {
             if (!_inited)
             {
@@ -83,7 +90,6 @@ namespace Sample.AutoCreateIfPresent
                 }
             }
             
-            return _tails.Keys.ToList();
         }
 
         public override void Configure(EntityMetadataTableBuilder<AreaDevice> builder)

samples/Sample.MySql/Controllers/WeatherForecastController.cs

@@ -85,7 +85,9 @@ namespace Sample.MySql.Controllers
             var shardingTableCreator = _shardingRuntimeContext.GetShardingTableCreator();
             var tableRouteManager = _shardingRuntimeContext.GetTableRouteManager();
             //系统的时间分片都会实现 ITailAppendable 如果不是系统的自定义的转成你自己的对象即可
-            var virtualTableRoute = (ITailAppendable)tableRouteManager.GetRoute(typeof(SysUserMod));
+            var tableRoute = tableRouteManager.GetRoute(typeof(SysUserMod));
+            var tails = tableRoute.GetTails();
+            var virtualTableRoute = (ITailAppendable)tableRoute;
             //一定要先在路由里面添加尾巴
             virtualTableRoute.Append("20220921");
             shardingTableCreator.CreateTable<SysUserMod>("ds0","20220921");
@@ -330,6 +332,13 @@ namespace Sample.MySql.Controllers
         [HttpGet]
         public async Task<IActionResult> Get10()
         {
+            var shardingDbContextExecutor = _defaultTableDbContext.GetShardingExecutor();
+            var dataSourceDbContexts = shardingDbContextExecutor.GetCurrentDbContexts();
+            var sourceDbContexts = dataSourceDbContexts.Values;
+            var dataSourceDbContext = sourceDbContexts.FirstOrDefault();
+            var dbConnection = dataSourceDbContext.GetCurrentContexts().FirstOrDefault().Value.Database.GetDbConnection();
+
+
             var sysUserMod1 = await _defaultTableDbContext.Set<SysTest>().Where(o=>o.UserId=="11231").AllAsync(o=>o.Id=="1123"&&string.Compare(o.UserId,"123")>0);
             var sysUserMod2 = await _defaultTableDbContext.Set<SysTest>().AllAsync(o=>o.Id=="1123");
             var dateTime = new DateTime(2020,1,1);
@@ -354,5 +363,25 @@ namespace Sample.MySql.Controllers
 
             return Ok();
         }
+        [HttpGet]
+        public async Task<IActionResult> Get12()
+        {
+            var sysTests = from ut in _defaultTableDbContext.Set<SysTest>()
+                where _defaultTableDbContext.Set<SysUserLogByMonth>().Any(x => x.Id == ut.Id)
+                    select ut;
+            var tests = sysTests.ToList();
+            return Ok();
+        }
+        [HttpGet]
+        public async Task<IActionResult> Get13()
+        {
+            var list =await _defaultTableDbContext.Set<SysUserLogByMonth>()
+                .GroupBy(o=>o.Time)
+                .Select(o=>new
+                {
+                    o.Key
+                }).ToListAsync();
+            return Ok();
+        }
     }
 }

samples/Sample.MySql/Domain/Entities/SysUserLogByMonth.cs

@@ -9,6 +9,6 @@ namespace Sample.MySql.Domain.Entities
     public class SysUserLogByMonth 
     {
         public string Id { get; set; }
-        public DateTime Time { get; set; }
+        public DateTime? Time { get; set; }
     }
 }

samples/Sample.MySql/Domain/Maps/SysTestMap.cs

@@ -1,5 +1,6 @@
 using Microsoft.EntityFrameworkCore;
 using Microsoft.EntityFrameworkCore.Metadata.Builders;
+using Microsoft.EntityFrameworkCore.Storage.ValueConversion;
 using Sample.MySql.Domain.Entities;
 
 namespace Sample.MySql.Domain.Maps
@@ -12,7 +13,7 @@ namespace Sample.MySql.Domain.Maps
             builder.Property(o => o.Id).IsRequired().HasMaxLength(128);
             builder.Property(o => o.UserId).IsRequired().HasMaxLength(128);
             builder.Property(o => o.UserId).IsConcurrencyToken();
-            builder.ToTable(nameof(SysTest));
+            builder.ToTable(nameof(SysTest),"dbdbd0");
         }
     }
 }

samples/Sample.MySql/Startup.cs

@@ -74,6 +74,8 @@ namespace Sample.MySql
             services.AddShardingDbContext<DefaultShardingDbContext>()
                 .UseRouteConfig((sp, o) =>
                 {
+                    
+                    // AppDomain.CurrentDomain.GetAssemblies().
                     o.AddShardingTableRoute<DynamicTableRoute>();
                     o.AddShardingTableRoute<SysUserLogByMonthRoute>();
                     o.AddShardingTableRoute<SysUserModVirtualTableRoute>();
@@ -93,6 +95,7 @@ namespace Sample.MySql
                     // {
                     //     b.UseMemoryCache(memoryCache);
                     // });
+                    o.CheckShardingKeyValueGenerated = false;
                     o.IgnoreCreateTableError = false;
                     o.UseEntityFrameworkCoreProxies = true;
                     o.CacheModelLockConcurrencyLevel = 1024;
@@ -107,6 +110,8 @@ namespace Sample.MySql
 
                     o.UseShardingQuery((conStr, builder) =>
                     {
+                        var logger = sp.ApplicationServiceProvider.GetService<ILogger<Startup>>();
+                        logger.LogInformation(conStr);
                         builder.UseMySql(conStr, new MySqlServerVersion(new Version()))
                             .UseLoggerFactory(loggerFactory1)
                             .EnableSensitiveDataLogging();
@@ -180,7 +185,7 @@ namespace Sample.MySql
             {
                 app.UseDeveloperExceptionPage();
             }
-            // app.ApplicationServices.UseAutoTryCompensateTable();
+            app.ApplicationServices.UseAutoTryCompensateTable();
 
             // var shardingRuntimeContext = app.ApplicationServices.GetRequiredService<IShardingRuntimeContext>();
             // var entityMetadataManager = shardingRuntimeContext.GetEntityMetadataManager();

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

@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
 using System.Linq.Expressions;
@@ -20,6 +21,24 @@ namespace ShardingCore.Sharding.Enumerators.AggregateExtensions
     /// </summary>
     internal static class AggregateExtension
     {
+        
+        public static object ChangeType(this object value, Type targetType)
+        {
+            //targetType类型是否为泛型，因为nullable是泛型类,
+            if (targetType.IsGenericType &&
+                //判断targetType是否为nullable泛型类
+                targetType.IsNullableType())
+            {
+                if (value == null)
+                {
+                    return null;
+                }
+
+                NullableConverter nullableConverter = new NullableConverter(targetType);
+                targetType = nullableConverter.UnderlyingType;
+            }
+            return Convert.ChangeType(value, targetType);
+        }
         public static TSource CopyTSource<TSource>(TSource source)
         {
             var anonType = source.GetType();
@@ -27,9 +46,20 @@ namespace ShardingCore.Sharding.Enumerators.AggregateExtensions
             var allPropertyTypes= allProperties.Select(o=>o.PropertyType).ToArray();
             if (anonType.IsAnonymousType())
             {
-                var constantExpressions = allProperties.Select(o => Expression.Constant(o.GetValue(source))).ToArray();
+                var constantExpressions = allProperties.Select(o =>
+                {
+                    var value = o.GetValue(source);
+                    if (value != null &&o.PropertyType.IsNullableType())
+                    {
+                        // var changeTypeValue = ChangeType(value,o.PropertyType);
+                        return Expression.Constant(value,o.PropertyType);
+                    }
+
+                    return Expression.Constant(value);
+                }).ToArray();
+                var constructorInfo = anonType.GetConstructor(allPropertyTypes);
                 var exp = Expression.New(
-                    anonType.GetConstructor(allPropertyTypes),
+                    constructorInfo,
                     constantExpressions);
                 var lambda = LambdaExpression.Lambda(exp);
                 TSource myObj = (TSource)lambda.Compile().DynamicInvoke();