Update exp to sql

Src/Asp.Net/SqlServerTest/UnitTest/UCustom012.cs

@@ -32,13 +32,14 @@ namespace OrmTest
 
             db.Insertable(new SchoolA() { SchoolId = 1, CityId= 1001001, School_Name = "北大" }).ExecuteCommand();
             db.Insertable(new SchoolA() { SchoolId = 2 , CityId=2,School_Name = "清华" }).ExecuteCommand();
+            db.Insertable(new SchoolA() { SchoolId = 3, CityId = 3, School_Name = "青鸟" }).ExecuteCommand();
 
             db.Insertable(new StudentA() { StudentId = 1, SchoolId = 1, Name = "北大jack" }).ExecuteCommand();
             db.Insertable(new StudentA() { StudentId = 2, SchoolId = 1, Name = "北大tom" }).ExecuteCommand();
             db.Insertable(new StudentA() { StudentId = 3, SchoolId = 2, Name = "清华jack" }).ExecuteCommand();
             db.Insertable(new StudentA() { StudentId = 4, SchoolId = 2, Name = "清华tom" }).ExecuteCommand();
             db.Insertable(new StudentA() { StudentId = 5, SchoolId = null, Name = "清华tom" }).ExecuteCommand();
-
+            db.Insertable(new StudentA() { StudentId = 6, SchoolId = 3, Name = "青鸟学生" }).ExecuteCommand();
             db.Insertable(new TeacherA() { SchoolId = 1, Id = 1, Name = "北大老师01" }).ExecuteCommand();
             db.Insertable(new TeacherA() { SchoolId = 1, Id = 2, Name = "北大老师02" }).ExecuteCommand();
 
@@ -76,6 +77,13 @@ namespace OrmTest
 
             Check.Exception(string.Join(",", list22.Select(it => it.StudentId)) != string.Join(",", list33.Select(it => it.StudentId)), "unit error");
 
+
+            var list333 = db.Queryable<StudentA>()
+               .Includes(it => it.SchoolA,it=>it.TeacherList)
+               .Where(it => it.SchoolA.TeacherList.Any())
+               .ToList();
+
+
             var list3 = db.Queryable<StudentA>()
            .Includes(x => x.SchoolA, x => x.RoomList)//2个参数就是 then Include 
            .Includes(x => x.SchoolA, x => x.TeacherList)//2个参数就是 then Include 

Src/Asp.Net/SqlSugar/ExpressionsToSql/Common/ExpressionItems.cs

@@ -10,7 +10,7 @@ namespace SqlSugar
     internal class ExpressionItems
     {
         /// <summary>
-        /// 0 memeber, 2 method  ,3 class
+        /// 1 memeber, 2 class  ,3 method
         /// </summary>
         public int Type { get; set; }
         public EntityInfo ParentEntityInfo { get; set; }

Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/MethodCallExpressionResolve.cs

@@ -253,6 +253,15 @@ namespace SqlSugar
                     return;
                  }
 
+                OneToManyNavgateExpressionN nav2 = new OneToManyNavgateExpressionN(this.Context?.SugarContext?.Context, this);
+                if (nav2.IsNavgate(express))
+                {
+                    var sql = nav2.GetSql();
+                    this.Context.SingleTableNameSubqueryShortName = nav2.shorName;
+                    base.AppendValue(parameter, isLeft, sql);
+                    return;
+                }
+
                 var constValue = ExpressionTool.DynamicInvoke(express);
                 if (constValue is MapperSql)
                 {

Src/Asp.Net/SqlSugar/ExpressionsToSql/ResolveItems/OneToManyNavgateExpressionN.cs

@@ -9,12 +9,19 @@ namespace SqlSugar
 {
     internal class OneToManyNavgateExpressionN
     {
-        private SqlSugarProvider context;
+        #region  Constructor
+        public SqlSugarProvider context;
+        public string shorName;
+        public EntityInfo entityInfo;
+        public List<ExpressionItems> items;
+        public string whereSql;
+        public MethodCallExpressionResolve methodCallExpressionResolve;
         public OneToManyNavgateExpressionN(SqlSugarProvider context, MethodCallExpressionResolve methodCallExpressionResolve)
         {
             this.context = context;
-
-        }
+            this.methodCallExpressionResolve= methodCallExpressionResolve;
+    }
+        #endregion
 
         internal bool IsNavgate(Expression expression)
         {
@@ -29,32 +36,16 @@ namespace SqlSugar
                 var memberExp=exp as MethodCallExpression;
                 if (memberExp.Method.Name.IsIn("Any","Count") &&  memberExp.Arguments.Count>0 && memberExp.Arguments[0] is MemberExpression ) 
                 {
-                    result = ValidateNav(result, memberExp.Arguments[0] as MemberExpression, memberExp.Arguments[0]);
+                    result = ValiteOneManyCall(result, memberExp, memberExp.Arguments[0] as MemberExpression, memberExp.Arguments[0]);
                     if (memberExp.Arguments.Count > 1)
                     {
+                        whereSql = GetWhereSql(memberExp);
                     }
                 }
             }
             return result;
         }
-
-        private string GetWhereSql(MethodCallExpression memberExp)
-        {
-           
-            return null;
-        }
-
-        private bool ValidateNav(bool result, MemberExpression memberExp, Expression childExpression)
-        {
-            if (childExpression != null && childExpression is MemberExpression)
-            {
-                result = ValidateIsJoinMember(result,memberExp, childExpression);
-            }
-
-            return result;
-        }
-        List<ExpressionItems> items;
-        private bool ValidateIsJoinMember(bool result, MemberExpression memberExp, Expression childExpression)
+        private bool ValiteOneManyCall(bool result,MethodCallExpression callExpression, MemberExpression memberExp, Expression childExpression)
         {
             if (childExpression != null && childExpression is MemberExpression)
             {
@@ -65,8 +56,14 @@ namespace SqlSugar
                     return false;
                 }
                 items = new List<ExpressionItems>();
-                items.Add(new ExpressionItems() { Type = 1, Expression = memberExp, ParentEntityInfo = this.context.EntityMaintenance.GetEntityInfo(oldChildExpression.Type) });
-                items.Add(new ExpressionItems() { Type = 2, Expression = oldChildExpression, ThisEntityInfo = this.context.EntityMaintenance.GetEntityInfo(oldChildExpression.Type), ParentEntityInfo = this.context.EntityMaintenance.GetEntityInfo(child2Expression.Type) });
+                var childType = oldChildExpression.Type;
+                if (!childType.FullName.IsCollectionsList()) 
+                {
+                    return false;
+                }
+                childType = childType.GetGenericArguments()[0];
+                items.Add(new ExpressionItems() { Type = 3, Expression = callExpression, ParentEntityInfo = this.context.EntityMaintenance.GetEntityInfo(childType) });
+                items.Add(new ExpressionItems() { Type = 2, Expression = oldChildExpression, ThisEntityInfo = this.context.EntityMaintenance.GetEntityInfo(childType), ParentEntityInfo = this.context.EntityMaintenance.GetEntityInfo(child2Expression.Type) });
                 if (items.Any(it => it.Type == 2 && it.Nav == null))
                 {
                     return false;
@@ -97,10 +94,79 @@ namespace SqlSugar
             }
             return result;
         }
+        public object GetSql()
+        {
+            MapperSql MapperSql = new MapperSql();
+            var memberInfo = this.items.Where(it => it.Type == 3).First();
+            var subInfos = this.items.Where(it => it.Type == 2).Reverse().ToList();
+            var formInfo = subInfos.First();
+            var joinInfos = subInfos.Skip(1).ToList();
+            var i = 0;
+            var masterShortName = formInfo.ThisEntityInfo.DbTableName + i;
+            var queryable = this.context.Queryable<object>(masterShortName).AS(formInfo.ThisEntityInfo.DbTableName);
+            i++;
+            var lastShortName = "";
+            var index = 0;
+            foreach (var item in joinInfos)
+            {
+                var shortName = item.ThisEntityInfo.DbTableName + i;
+                EntityColumnInfo pkColumn ;
+                EntityColumnInfo navColum ;
+                if (index == 0)
+                {
+                    pkColumn = item.ThisEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == item.Nav.Name);
+                    navColum = item.ParentEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
+                }
+                else 
+                {
+                    pkColumn = item.ThisEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
+                    navColum = item.ParentEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == item.Nav.Name);
+                }
+                Check.ExceptionEasy(pkColumn == null, $"{item.ThisEntityInfo.EntityName} need PrimayKey", $"使用导航属性{item.ThisEntityInfo.EntityName} 缺少主键");
+                var on = $" {shortName}.{pkColumn.DbColumnName}={formInfo.ThisEntityInfo.DbTableName + (i - 1)}.{navColum.DbColumnName}";
+                queryable.AddJoinInfo(item.ThisEntityInfo.DbTableName, shortName, on, JoinType.Inner);
+                ++i;
+                index++;
+                lastShortName = shortName;
+                formInfo = item;
+            }
+            queryable.Select($" COUNT(1)");
+            var last = subInfos.First();
+            var FirstPkColumn = last.ThisEntityInfo.Columns.FirstOrDefault(it => it.IsPrimarykey);
+            Check.ExceptionEasy(FirstPkColumn == null, $"{ last.ThisEntityInfo.EntityName} need PrimayKey", $"使用导航属性{ last.ThisEntityInfo.EntityName} 缺少主键");
+            var PkColumn = last.ParentEntityInfo.Columns.FirstOrDefault(it => it.PropertyName == last.Nav.Name);
+            Check.ExceptionEasy(PkColumn == null, $"{ last.ParentEntityInfo.EntityName} no found {last.Nav.Name}", $"{ last.ParentEntityInfo.EntityName} 不存在 {last.Nav.Name}");
+            queryable.Where($" {this.shorName}.{PkColumn.DbColumnName} = {masterShortName}.{FirstPkColumn.DbColumnName} ");
+            MapperSql.Sql = $"( {queryable.ToSql().Key} ) ";
+            if ((memberInfo.Expression as MethodCallExpression).Method.Name == "Any")
+            {
+                MapperSql.Sql = $"( {MapperSql.Sql}>0 ) ";
+
+            }
+            return MapperSql;
+        }
+
+        #region Helper
+        private string GetWhereSql(MethodCallExpression memberExp)
+        {
+            var whereExp = memberExp.Arguments[1];
+            var result = this.methodCallExpressionResolve.GetNewExpressionValue(whereExp);
+            return result;
+        }
+        private static bool IsParameter(Expression child2Expression)
+        {
+            return child2Expression.Type.IsClass() && child2Expression is ParameterExpression;
+        }
+
+        private static Expression GetMemberExpression(Expression child2Expression)
+        {
+            return (child2Expression as MemberExpression).Expression;
+        }
 
-        internal object GetSql()
+        private static bool IsClass(Expression child2Expression)
         {
-            throw new NotImplementedException();
+            return child2Expression.Type.IsClass() && child2Expression is MemberExpression;
         }
+        #endregion
     }
 }