Update mongodb

Src/Asp.NetCore2/MongoDbTest/OrmTest/OrmTest.cs

@@ -47,9 +47,15 @@ namespace MongoDbTest
             var updateRow4 = db.Updateable<OrderInfo>()
              .SetColumns(it => it.CreateTime == DateTime.Now) 
              .SetColumns(it => it.Name == "xx")
-              .Where(it => it.Id == ids.Last())
+             .Where(it => it.Id == ids.Last())
              .ExecuteCommand();
 
+            var updateRow5 = db.Updateable<OrderInfo>()
+               .SetColumns(it =>new OrderInfo{ Name="aa", CreateTime = DateTime.Now}) 
+               .Where(it => it.Id == ids.Last())
+               .ExecuteCommand();
+
+
             var delrow = db.Deleteable(new OrderInfo() { Id = ids.Last() })
               .ExecuteCommand(); 
 

Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/ExpressionVisitor.cs

@@ -42,10 +42,17 @@ namespace SqlSugar.MongoDbCore
                     return this.Visit(lambda.Body);
                 case MethodCallExpression call:
                     return new MethodCallExpressionTractor(context, visitorContext).Extract(call);
+                case MemberInitExpression newMemberExp:
+                    return new MemberInitExpressionTractor(context, visitorContext).Extract(newMemberExp);
                 default:
                     throw new NotSupportedException($"Unsupported expression: {expr.NodeType}");
             }
         }
+
+        private object MemberInitExpressionTractor(MongoNestedTranslatorContext context, ExpressionVisitorContext visitorContext)
+        {
+            throw new NotImplementedException();
+        }
     }
 
 }

Src/Asp.NetCore2/SqlSugar.MongoDbCore/ExpToSql/VisitorItems/MemberInitExpressionTractor.cs

@@ -0,0 +1,45 @@
+using MongoDB.Bson;
+using System;
+using System.Collections.Generic;
+using System.Linq.Expressions;
+using System.Text;
+
+namespace SqlSugar.MongoDbCore 
+{
+    public class MemberInitExpressionTractor 
+    {
+        MongoNestedTranslatorContext _context;
+        ExpressionVisitorContext _visitorContext;
+
+        public MemberInitExpressionTractor(MongoNestedTranslatorContext context, ExpressionVisitorContext visitorContext)
+        {
+            _context = context;
+            _visitorContext = visitorContext;
+        }
+
+        public BsonValue Extract(Expression expr)
+        {
+            if (this._context.resolveType == ResolveExpressType.Update)
+            {
+                return Update(expr);
+            }
+            throw new Exception("");
+        }
+
+        private static BsonValue Update(Expression expr)
+        {
+            var exp = expr as MemberInitExpression;
+            var setDocument = new BsonDocument();
+            foreach (var binding in exp.Bindings)
+            {
+                if (binding is MemberAssignment assignment)
+                {
+                    var fieldName = assignment.Member.Name;
+                    var fieldValue = Expression.Lambda(assignment.Expression).Compile().DynamicInvoke();
+                    setDocument[fieldName] = BsonValue.Create(fieldValue);
+                }
+            }
+            return new BsonDocument("$set", setDocument);
+        }
+    }
+}

Src/Asp.NetCore2/SqlSugar.MongoDbCore/MongoDb/SqlBuilder/MongoDbUpdateBuilder.cs

@@ -50,7 +50,13 @@ namespace SqlSugar.MongoDb
         {
             var operations = new List<string>();
             List<string> pks = this.PrimaryKeys;
-            if (this.SetValues.Any())
+            if (this.SetValues.Any() && this.SetValues.Any(it => it.Key == "$set"))
+            {
+                BsonArray filterArray = GetFilterArray();
+                var filter = new BsonDocument("$and", filterArray);
+                operations.Add($"{{ filter: {filter.ToJson(UtilMethods.GetJsonWriterSettings())} , update: {SetValues.FirstOrDefault().Value }}}");
+            }
+            else if (this.SetValues.Any())
             {
                 var setOperation = new BsonDocument();
                 foreach (var item in this.SetValues)
@@ -61,12 +67,7 @@ namespace SqlSugar.MongoDb
                         setOperation[element.Name] = element.Value;
                     }
                 }
-                var filterArray = new BsonArray();
-                foreach (var item in this.WhereValues)
-                {
-                    var bson = BsonDocument.Parse(item); // 直接解析 JSON 为 BsonDocument
-                    filterArray.Add(bson); // 将每个条件添加到数组
-                }
+                var filterArray = GetFilterArray();
                 var filter = new BsonDocument("$and", filterArray);
                 operations.Add($"{{ filter: {filter.ToJson(UtilMethods.GetJsonWriterSettings())} , update: {{ $set: {setOperation.ToJson(UtilMethods.GetJsonWriterSettings())} }} }}");
             }
@@ -82,6 +83,18 @@ namespace SqlSugar.MongoDb
             return sb.ToString();
         }
 
+        private BsonArray GetFilterArray()
+        {
+            var filterArray = new BsonArray();
+            foreach (var item in this.WhereValues)
+            {
+                var bson = BsonDocument.Parse(item); // 直接解析 JSON 为 BsonDocument
+                filterArray.Add(bson); // 将每个条件添加到数组
+            }
+
+            return filterArray;
+        }
+
         private static void UpdateByObject(List<IGrouping<int, DbColumnInfo>> groupList, List<string> operations, List<string> pks)
         {
             foreach (var group in groupList)

Src/Asp.NetCore2/SqlSugar.MongoDbCore/MongoDb/Updateable/MongoDbUpdateable.cs

@@ -28,5 +28,14 @@ namespace SqlSugar.MongoDb
             } 
             return this;
         }
+
+        public override IUpdateable<T> SetColumns(Expression<Func<T, T>> columns)
+        {
+            ThrowUpdateByObject();
+            var expResult = UpdateBuilder.GetExpressionValue(columns, ResolveExpressType.Update)
+                .GetResultString();
+            this.UpdateBuilder.SetValues.Add(new KeyValuePair<string, string>("$set", expResult));
+            return this;
+        }
     }
 }