Enhanced navigation query Select

Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/NavSelectHelper.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace SqlSugar 
+{
+    internal class NavSelectHelper
+    {
+        internal static List<TResult> GetList<T, TResult>(Expression<Func<T, TResult>> expression, QueryableProvider<T> queryableProvider)
+        {
+            List<TResult> result = new List <TResult>();
+            var isSqlFunc = IsSqlFunc(expression, queryableProvider);
+            if (isSqlFunc&&isGroup(expression, queryableProvider))
+            {
+                var sqlfuncQueryable = queryableProvider.Clone();
+                sqlfuncQueryable.QueryBuilder.Includes = null;
+                result = sqlfuncQueryable
+                    .Select(expression)
+                    .ToList();
+                var includeQueryable = queryableProvider.Clone();
+                includeQueryable.Select(GetGroupSelect(typeof(T), queryableProvider.Context));
+                includeQueryable.QueryBuilder.NoCheckInclude=true;
+                MegerList(result, includeQueryable.ToList(), sqlfuncQueryable.Context);
+            }
+            else if (isSqlFunc) 
+            {
+                var sqlfuncQueryable = queryableProvider.Clone();
+                sqlfuncQueryable.QueryBuilder.Includes = null;
+                result = sqlfuncQueryable
+                    .Select(expression)
+                    .ToList();
+                var includeList = queryableProvider.Clone().ToList();
+                MegerList(result, includeList, sqlfuncQueryable.Context);
+            }
+            else
+            {
+                result= queryableProvider.ToList().Select(expression.Compile()).ToList();
+            }
+            return result;
+        }
+        internal static async Task<List<TResult>> GetListAsync<T, TResult>(Expression<Func<T, TResult>> expression, QueryableProvider<T> queryableProvider)
+        {
+            List<TResult> result = new List<TResult>();
+            var isSqlFunc = IsSqlFunc(expression, queryableProvider);
+            if (isSqlFunc && isGroup(expression, queryableProvider))
+            {
+                var sqlfuncQueryable = queryableProvider.Clone();
+                sqlfuncQueryable.QueryBuilder.Includes = null;
+                result =await sqlfuncQueryable
+                    .Select(expression)
+                    .ToListAsync();
+                var includeQueryable = queryableProvider.Clone();
+                includeQueryable.Select(GetGroupSelect(typeof(T), queryableProvider.Context));
+                includeQueryable.QueryBuilder.NoCheckInclude = true;
+                MegerList(result,await includeQueryable.ToListAsync(), sqlfuncQueryable.Context);
+            }
+            else if (isSqlFunc)
+            {
+                var sqlfuncQueryable = queryableProvider.Clone();
+                sqlfuncQueryable.QueryBuilder.Includes = null;
+                result =await sqlfuncQueryable
+                    .Select(expression)
+                    .ToListAsync();
+                var includeList =await queryableProvider.Clone().ToListAsync();
+                MegerList(result, includeList, sqlfuncQueryable.Context);
+            }
+            else
+            {
+                var list =await queryableProvider.ToListAsync();
+                result = list.Select(expression.Compile()).ToList();
+            }
+            return result;
+        }
+
+        private static string GetGroupSelect(Type type,SqlSugarProvider context)
+        {
+            var entity = context.EntityMaintenance.GetEntityInfo(type);
+            List<string> selector = new List<string>();
+            foreach (var item in entity.Columns.Where(it=>it.IsIgnore==false))
+            {
+                selector.Add($" min({item.DbColumnName}) as {item.DbColumnName}");
+            }
+            return string.Join(",", selector);
+        }
+
+        private static void MegerList<TResult, T>(List<TResult> result, List<T> includeList,SqlSugarProvider context)
+        {
+            if (result.Count != includeList.Count) return;
+            var columns = context.EntityMaintenance.GetEntityInfo<T>().Columns;
+            var resColumns = context.EntityMaintenance.GetEntityInfo<TResult>().Columns;
+            var i = 0;
+            foreach (var item in includeList) 
+            {
+                foreach (var column in columns) 
+                {
+                    if (column.Navigat != null) 
+                    {
+                        var value = column.PropertyInfo.GetValue(item);
+                        var resColumn=resColumns
+                            .FirstOrDefault(z=>
+                            z.PropertyName.Equals(column.PropertyName)&&
+                            z.PropertyInfo.PropertyType==column.PropertyInfo.PropertyType
+                            );
+                        if (resColumn != null) 
+                        {
+                          var  resItem=  result[i];
+                            resColumn.PropertyInfo.SetValue(resItem,value);
+                        }
+                    }
+                }
+                i++;
+            }
+        }
+
+        private static bool IsSqlFunc<T, TResult>(Expression<Func<T, TResult>> expression, QueryableProvider<T> queryableProvider)
+        {
+            var body=ExpressionTool.GetLambdaExpressionBody(expression);
+            if (body is NewExpression) 
+            {
+                var newExp=((NewExpression)body);
+                foreach (var item in newExp.Arguments)
+                {
+                    if (item is MethodCallExpression) 
+                    {
+                        var method = ((MethodCallExpression)item).Method;   
+                        if (method.DeclaringType != null&& method.DeclaringType.Name=="SqlFunc")
+                        {
+                            return true;
+                        }
+                    }
+                }
+            }
+            if (body is MemberInitExpression)
+            {
+                var newExp = ((MemberInitExpression)body);
+                foreach (var item in newExp.Bindings)
+                {
+                    MemberAssignment memberAssignment = (MemberAssignment)item;
+                    if (memberAssignment.Expression is MethodCallExpression)
+                    {
+                        var method = ((MethodCallExpression)memberAssignment.Expression).Method;
+                        if (method.DeclaringType != null && method.DeclaringType.Name == "SqlFunc")
+                        {
+                            return true;
+                        }
+                    }
+                }
+            }
+            return false;
+        }
+
+        private static bool isGroup<T, TResult>(Expression<Func<T, TResult>> expression, QueryableProvider<T> queryableProvider)
+        {
+            var isGroup=queryableProvider.QueryBuilder.GetGroupByString.HasValue();
+            return isGroup;
+        }
+    }
+}

Src/Asp.Net/SqlSugar/Abstract/QueryableProvider/QueryableProvider.cs

@@ -981,8 +981,9 @@ namespace SqlSugar
         {
             if (this.QueryBuilder.Includes != null && this.QueryBuilder.Includes.Count > 0)
             {
-                var list = this.ToList().Select(expression.Compile()).ToList();
-                return list;
+                return NavSelectHelper.GetList(expression,this);
+               // var list = this.ToList().Select(expression.Compile()).ToList();
+               // return list;
             }
             else 
             {
@@ -994,9 +995,7 @@ namespace SqlSugar
         {
             if (this.QueryBuilder.Includes != null && this.QueryBuilder.Includes.Count > 0)
             {
-                var result = await this.ToListAsync();
-                var list =  result.Select(expression.Compile()).ToList();
-                return list;
+                return await NavSelectHelper.GetListAsync(expression, this);
             }
             else
             {
@@ -2781,7 +2780,7 @@ namespace SqlSugar
             if (this.QueryBuilder.Includes != null) 
             {
                 var managers=(this.QueryBuilder.Includes  as List<object>);
-                if (this.QueryBuilder.SelectValue.HasValue()) 
+                if (this.QueryBuilder.SelectValue.HasValue()&& this.QueryBuilder.NoCheckInclude==false) 
                 {
                     Check.ExceptionEasy("To use includes, use select after tolist()", "使用Includes请在ToList()之后在使用Select");
                 }

Src/Asp.Net/SqlSugar/Abstract/SqlBuilderProvider/QueryBuilder.cs

@@ -762,6 +762,7 @@ namespace SqlSugar
 
         #region NoCopy
         internal bool IsClone { get; set; }
+        public bool NoCheckInclude { get;  set; }
         #endregion
 
         private string GetTableName(string entityName)

Src/Asp.Net/SqlSugar/SqlSugar.csproj

@@ -108,6 +108,7 @@
     <Compile Include="Abstract\FastestProvider\Setting.cs" />
     <Compile Include="Abstract\FastestProvider\SplitFastest.cs" />
     <Compile Include="Abstract\FilterProvider\FilterProvider.cs" />
+    <Compile Include="Abstract\QueryableProvider\NavSelectHelper.cs" />
     <Compile Include="Abstract\QueryableProvider\IncludesHelper.cs" />
     <Compile Include="Abstract\QueryableProvider\Includes.cs" />
     <Compile Include="Abstract\QueryableProvider\MappingFieldsHelper.cs" />