Update mongodb

Src/Asp.NetCore2/MongoDb.Ado.data/ExecuteNonQueryItemsAsync/BulkWriteHandlerAsync.cs

@@ -0,0 +1,42 @@
+using MongoDB.Bson.Serialization;
+using MongoDB.Bson;
+using MongoDB.Driver;
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Threading.Tasks;
+using System.Threading;
+
+namespace MongoDb.Ado.data 
+{
+    public class BulkWriteHandlerAsync : IMongoOperationHandlerAsync
+    {
+        public CancellationToken token { get; set; }
+        public string operation { get; set; }
+        public async Task<int> HandleAsync(IMongoCollection<BsonDocument> collection, string json)
+        {
+            var documents = ParseJsonArray(json);
+            var bulkOps = new List<WriteModel<BsonDocument>>();
+
+            foreach (var doc in documents)
+            {
+                var filter = doc["filter"].AsBsonDocument;
+                var update = doc["update"].AsBsonDocument;
+
+                var op = new UpdateManyModel<BsonDocument>(filter, update);
+                bulkOps.Add(op);
+            }
+
+            var result =await collection.BulkWriteAsync(bulkOps);
+            return (int)result.ModifiedCount;
+        }
+
+        private List<BsonDocument> ParseJsonArray(string json)
+        {
+            if (json.TrimStart().StartsWith("["))
+                return BsonSerializer.Deserialize<List<BsonDocument>>(json);
+            return new List<BsonDocument> { BsonDocument.Parse(json) };
+        }
+    }
+
+}