Update mongoDb

Src/Asp.NetCore2/MongoDb.Ado.data/MongoDbCommand.cs

@@ -0,0 +1,100 @@
+using System;
+using System.Data.Common;
+using System.Threading.Tasks;
+using MongoDB.Driver;
+using MongoDB.Bson;
+using System.Data; 
+namespace MongoDb.Ado.data
+{
+
+    public class MongoDbCommand : DbCommand
+    {
+        private string _commandText;
+        private MongoDbConnection _connection;
+        private int _commandTimeout;
+
+        public MongoDbCommand()
+        {
+        }
+
+        public MongoDbCommand(string commandText, MongoDbConnection connection)
+        {
+            _commandText = commandText;
+            _connection = connection;
+        }
+
+        public override string CommandText
+        {
+            get => _commandText;
+            set => _commandText = value;
+        }
+
+        public override int CommandTimeout
+        {
+            get => _commandTimeout;
+            set => _commandTimeout = value;
+        }
+
+        public override CommandType CommandType { get; set; } = CommandType.Text;
+
+        protected override DbConnection DbConnection
+        {
+            get => _connection;
+            set => _connection = (MongoDbConnection)value;
+        }
+
+        protected override DbParameterCollection DbParameterCollection => throw new NotSupportedException("MongoDbCommand does not support parameters yet.");
+
+        protected override DbTransaction DbTransaction { get; set; }
+
+        public override bool DesignTimeVisible { get; set; }
+
+        public override UpdateRowSource UpdatedRowSource { get; set; }
+
+        public override void Cancel()
+        {
+            // MongoDB driver does not support canceling a command.
+        }
+
+        public override int ExecuteNonQuery()
+        {
+            throw new NotSupportedException("MongoDbCommand does not support ExecuteNonQuery directly.");
+        }
+
+        public override object ExecuteScalar()
+        {
+            var collection = GetCollection();
+            var document = collection.Find(FilterDefinition<BsonDocument>.Empty).FirstOrDefault();
+            return document;
+        }
+
+        protected override DbDataReader ExecuteDbDataReader(CommandBehavior behavior)
+        {
+            var collection = GetCollection();
+            var cursor = collection.Find(FilterDefinition<BsonDocument>.Empty).ToCursor();
+            return new MongoDbDataReader(cursor);
+        }
+
+        public override void Prepare()
+        {
+            // No preparation needed for MongoDB commands
+        }
+
+        private IMongoCollection<BsonDocument> GetCollection()
+        {
+            if (_connection == null || _connection.State != ConnectionState.Open)
+                throw new InvalidOperationException("Connection must be open.");
+
+            if (string.IsNullOrWhiteSpace(_commandText))
+                throw new InvalidOperationException("CommandText must be set to the collection name.");
+
+            return _connection.GetDatabase().GetCollection<BsonDocument>(_commandText);
+        }
+
+        protected override DbParameter CreateDbParameter()
+        {
+            throw new NotImplementedException();
+        }
+    }
+
+}